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虚二次域例两(-5/50)

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lilianjie        

43

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204

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升级  52%

  • TA的每日心情
    开心
    2012-1-13 11:05
  • 签到天数: 15 天

    [LV.4]偶尔看看III

    跳转到指定楼层
    1#
    发表于 2012-1-4 17:41 |只看该作者 |倒序浏览
    |招呼Ta 关注Ta
    本帖最后由 lilianjie 于 2012-1-4 17:54 编辑
    ' B5 b, q8 F: O: Z
    3 y' Y* \" W; u$ {. sQ5:=QuadraticField(-5) ;
    ) A0 ?' e" z2 GQ5;5 P: u2 u, g( c$ ~9 A

    : `7 J# o8 q6 ^4 x- h4 `# L; d: DQ<w> :=PolynomialRing(Q5);Q;
    & F4 Q3 N8 b+ r5 PEquationOrder(Q5);( K/ Q5 d0 x# w* ~, F! Y
    M:=MaximalOrder(Q5) ;
    * w" r2 t( Z! S$ S7 t: v6 ?M;
    2 C: Q. P: d/ HNumberField(M);
    0 ?+ e" I) R) \S1:=sub< M | 1 >;S2:=sub< M | 2 >;S3:=sub< M | 3 >;S4:=sub< M | 4 >;S5:=sub< M | 5 >;S25:=sub< M | 25 >;S625888888:=sub< M | 625888888 >;S625888888;
    ; P9 m) [& e" U& t+ g9 HIsQuadratic(Q5);& ^3 E0 M1 Y+ d' j
    IsQuadratic(S1);+ o8 T6 {5 y" {
    IsQuadratic(S4);
    - v3 `3 z, }/ f7 c9 A6 R+ ?IsQuadratic(S25);
    6 j, t( s4 s8 p- F$ ^- e" ZIsQuadratic(S625888888);: V$ b/ A7 t/ P9 l
    Factorization(w^2+5);  ; h8 y/ n9 T% E
    Discriminant(Q5) ;
    ! X5 z5 h9 k* `' l# g. gFundamentalUnit(Q5) ;
    ; B$ A2 k7 h8 OFundamentalUnit(M);5 U" H: j- I0 f5 O# x# k& Q
    Conductor(Q5) ;
    ( S" r! A; u: W4 a: m/ M* \6 E8 y, G5 {/ D- t3 ^
    Name(M, -5);8 u6 d, v: {  V
    Conductor(M);& ^0 t3 V. C: t  h/ ~
    ClassGroup(Q5) ; 2 g9 @+ A( c& ^* T5 S$ h7 L, m- t
    ClassGroup(M);
    1 e# E5 X+ u! k/ t' ^ClassNumber(Q5) ;
    2 I0 L8 X5 S/ _5 E, u8 Q" nClassNumber(M) ;
    " i0 U1 r: d6 }! E# G- e% YPicardGroup(M) ;4 I+ r, Y2 i" z8 L7 Q3 B0 l
    PicardNumber(M) ;& \1 P- V. {$ u7 S

    $ H8 R7 a$ t& h, b" _QuadraticClassGroupTwoPart(Q5);4 B' S) i' q4 ?; X! ]# P. a# E$ |
    QuadraticClassGroupTwoPart(M);
    ) P$ n2 D5 s+ q7 x0 y- tNormEquation(Q5, -5) ;
    9 ]! s2 `3 [' {7 f+ s0 ONormEquation(M, -5) ;
    # p- N2 |/ v2 k) o! q8 ^Quadratic Field with defining polynomial $.1^2 + 5 over the Rational Field
    8 @  c* g) c# ^- V0 nUnivariate Polynomial Ring in w over Q5
      n: O5 m" V7 c1 W/ P5 q$ Z# f( vEquation Order of conductor 1 in Q5
    & p' k7 H  t3 J: S% \7 s- SMaximal Equation Order of Q5! p) k1 T! I7 z( t) \
    Quadratic Field with defining polynomial $.1^2 + 5 over the Rational Field
    ! Q- z; U9 ~9 m+ R, kOrder of conductor 625888888 in Q54 t! J5 ]( [8 P- p- C4 \
    true Quadratic Field with defining polynomial $.1^2 + 5 over the Rational Field2 ~; P  e( ?( T: S+ t' ~2 F& ~0 u
    true Maximal Equation Order of Q5
    2 ?# a( }7 g6 E/ l  C+ btrue Order of conductor 1 in Q5
    - X7 s  K& |! a4 Btrue Order of conductor 1 in Q5
    , ]* {7 C8 U. ^7 `' ltrue Order of conductor 1 in Q5: r2 ?- t5 k& a$ {+ K- Y% \
    [
    / a5 ^* W* Z$ f# Z& v; j0 F2 c    <w - Q5.1, 1>,: o5 I0 {; K1 [: z& w  ^
        <w + Q5.1, 1>; K4 t$ Y! @. k! _) C' G$ x
    ]
    7 D7 U$ O& s" M' f. Y- i- E9 m7 g* |-20" J, g! m3 \. i, f# M" O' y

    & N% A0 b$ x1 v>> FundamentalUnit(Q5) ;3 ]1 R( \/ X! V6 {- j- h
                      ^+ \9 N* g/ r: h/ t$ O3 P
    Runtime error in 'FundamentalUnit': Field must have positive discriminant
    ! |# b+ D  ?8 \3 G; @- f
    0 S5 p8 }5 q7 `) X+ Z7 T8 }
    $ m# [" J6 }- s7 w* T: `>> FundamentalUnit(M);
    : K# a' `' W% X( ?6 W" V, g                  ^
    & p, Q9 N4 T. k2 }! p- K. X$ ]Runtime error in 'FundamentalUnit': Field must have positive discriminant
    * V) g: l6 |) F$ K  T2 V2 Y& i$ D1 s6 ~7 ?" B/ i
    208 x! N9 z1 F9 w9 S" r
    % q1 x! p+ `# W" s
    >> Name(M, -5);# J' N( l0 M4 a' [! D! }* {
           ^, x. X/ X0 d1 }0 `
    Runtime error in 'Name': Argument 2 (-5) should be in the range [1 .. 1], ?* v) C! d( m7 _

    3 O3 U5 S2 Y( s3 Q. o0 g( a& o2 E: s1
    $ [, H. ^; S. Z% `* d. oAbelian Group isomorphic to Z/2& p' Z1 S- X3 \- t4 j8 i9 L
    Defined on 1 generator( ]& b$ n5 m' D4 y
    Relations:: X5 v" x& K9 T
        2*$.1 = 0
    ; Z  \5 S" S3 XMapping from: Abelian Group isomorphic to Z/26 Z; U. V/ |( o  o: m4 h, |- X
    Defined on 1 generator- }, N0 g8 x' G/ ~8 j3 B
    Relations:
    : _' P5 |7 a, f" Q! h0 a3 C1 A  d0 w    2*$.1 = 0 to Set of ideals of M
    % ?( E/ Q+ O! m9 g& l9 m% N# I# iAbelian Group isomorphic to Z/2" a8 g& Q& \% K( E5 p
    Defined on 1 generator
    " f) S+ V, f- @  l/ U# K$ @+ K& X9 nRelations:$ Z" X' }& s7 A0 ?
        2*$.1 = 0* |$ N1 W8 B  y* v0 O) S
    Mapping from: Abelian Group isomorphic to Z/2
      _4 f. k- N/ @/ j  ?Defined on 1 generator' P: P$ Q0 o, g3 Y5 e+ g% G1 m
    Relations:5 |/ ~$ Z2 m! j6 j
        2*$.1 = 0 to Set of ideals of M7 m5 S* i; b+ M7 K. ^
    2
    6 i( j  |8 k( ?; i3 [27 w. n, P8 u% j7 ]. V% l
    Abelian Group isomorphic to Z/2
    # `$ V) `  \- n9 T; q3 |Defined on 1 generator! [  s+ U& K3 p" a4 I/ l
    Relations:( F0 w, U. K8 Y% z2 F% y% H* U5 l! }
        2*$.1 = 0
    ( T4 m+ e$ `. J9 HMapping from: Abelian Group isomorphic to Z/2
    5 y+ o/ @; C3 Y" N; u7 n1 cDefined on 1 generator
    : ?& c9 _& K+ ?1 sRelations:
    " `7 [! s6 c$ I6 j* q    2*$.1 = 0 to Set of ideals of M given by a rule [no inverse]
    6 q5 V% H4 W* W$ H5 o2 J2# H" e* X! k: z+ M  a* g( C2 O
    Abelian Group isomorphic to Z/2+ y- v7 y' P0 Q5 h1 ?! g
    Defined on 1 generator# _" o% }$ _" X; h! ?; p9 h0 Z5 v; j4 H
    Relations:/ h, E1 I: s' e/ P% g
        2*$.1 = 0
    7 i2 \6 x; {) W) V' HMapping from: Abelian Group isomorphic to Z/28 V1 g2 ]( V$ `1 w- f
    Defined on 1 generator$ I1 y/ x$ U$ k; `% J4 j
    Relations:
    " C1 q  ?! B+ L" @* N" S5 M    2*$.1 = 0 to Binary quadratic forms of discriminant -20 given by a rule [no
    9 Y1 D) d& H* g) y1 t0 yinverse]
    5 u; b+ R1 A5 G: J: jAbelian Group isomorphic to Z/2% c3 p9 h2 |6 u' y& q
    Defined on 1 generator
    8 h- x% L) I- TRelations:' o+ r5 @, @$ x6 A6 w8 x4 i
        2*$.1 = 0; R7 c- [6 S8 ], O' X
    Mapping from: Abelian Group isomorphic to Z/2
    ( X5 O; ]0 j. L. B" }1 \$ c* wDefined on 1 generator
    9 I7 y0 X* a* ~8 n3 ]0 ?7 T( L! hRelations:. p- t- B4 Y3 R( I
        2*$.1 = 0 to Binary quadratic forms of discriminant -20 given by a rule [no . h# r8 e2 ~3 O/ C" C
    inverse]0 T, S4 D7 b+ `; |, Y
    false
    - p! x4 O/ D. vfalse
    , [3 Z1 i0 ~( u' h2 P0 W==============
    % O) Q- u. g# I# R
    + z# s5 ~7 p7 b% f
    % b0 R9 o5 W. }8 a! c  C0 eQ5:=QuadraticField(-50) ;% H$ S6 G  j& I3 `1 V& G
    Q5;' w% D2 x! `8 X- {- p$ W2 ]! p

    - x+ D! B! I, K. J# ]1 yQ<w> :=PolynomialRing(Q5);Q;
    * d. |4 Y8 `5 A2 C$ bEquationOrder(Q5);- ?8 T# S8 X7 I7 y5 ^" n9 U7 m
    M:=MaximalOrder(Q5) ;
    # s1 }: w. T* \4 \: @% _M;
    / {* ~+ S3 C# X  r6 NNumberField(M);
    9 j$ t9 r! P9 wS1:=sub< M | 1 >;S2:=sub< M | 2 >;S3:=sub< M | 3 >;S4:=sub< M | 4 >;S5:=sub< M | 5 >;S25:=sub< M | 25 >;S625888888:=sub< M | 625888888 >;S625888888;: O' R3 p4 `* m, ^: ?
    IsQuadratic(Q5);4 k/ u0 Y, a( J7 m
    IsQuadratic(S1);
      J3 j+ x2 M) @' g, q# bIsQuadratic(S4);
    ) i2 F3 n5 v% r% O. yIsQuadratic(S25);8 l4 ]6 M& i. K- O
    IsQuadratic(S625888888);$ N$ Z+ f/ y' t: r
    Factorization(w^2+50);  
      V, |- S: Y! `, N$ |0 dDiscriminant(Q5) ;
    ) K( Q3 w$ X$ F4 |FundamentalUnit(Q5) ;
    0 B6 V/ L5 x) l5 y  @7 N  CFundamentalUnit(M);% b. C$ L. a0 n' g  L1 b
    Conductor(Q5) ;
    6 i! R7 J& c- d: I+ M1 C0 c/ y" ]/ w% o" M9 w! l. n. V! Q& j
    Name(M, -50);
    " u8 P; \' `, }) sConductor(M);( u: M, s2 {$ z/ i9 r( Q9 t
    ClassGroup(Q5) ;
    * K' F6 `# V4 d* W9 S' U8 s; o4 yClassGroup(M);$ G; Z2 L4 z; H& I; g$ F
    ClassNumber(Q5) ;; G- u- y7 h' R" k1 ?
    ClassNumber(M) ;( g* ?$ x( q2 w+ n
    PicardGroup(M) ;4 J1 f4 S$ W7 {9 r" M
    PicardNumber(M) ;, e; T8 D9 X# @( n- k# Y, ?, p
    & k+ }& m2 X( T9 ^8 O! q, i+ c1 Y
    QuadraticClassGroupTwoPart(Q5);# o* U) {3 B" Z% l1 R  m
    QuadraticClassGroupTwoPart(M);' k! S% X7 D" c
    NormEquation(Q5, -50) ;: C9 }5 _* a7 S' [3 q( N$ s
    NormEquation(M, -50) ;
    ( i5 C" _/ x# w1 |3 l' C$ G6 t( c" c4 Q0 H# n
    Quadratic Field with defining polynomial $.1^2 + 2 over the Rational Field: Y" G8 s- m; S8 [
    Univariate Polynomial Ring in w over Q5
    ( c# `6 F$ m5 J+ Y; T  ^% MEquation Order of conductor 1 in Q51 m5 A3 G7 ^, K
    Maximal Equation Order of Q5
    , a+ t6 w' A9 E9 c) Q" hQuadratic Field with defining polynomial $.1^2 + 2 over the Rational Field' Y* B" S- R/ j  Q+ K5 D6 ~: ~
    Order of conductor 625888888 in Q5" T! y3 E, z. z* N
    true Quadratic Field with defining polynomial $.1^2 + 2 over the Rational Field
    ' ~* e, U) g0 Q6 ?true Maximal Equation Order of Q52 W2 g" Y$ g/ r3 d+ c5 K8 ^. ^
    true Order of conductor 1 in Q5. J" m' u1 W. N5 p
    true Order of conductor 1 in Q5
    8 m- X' K4 h- l; u- Gtrue Order of conductor 1 in Q5- z# Q% ^9 ^$ ~9 U2 v2 C2 L* n
    [$ y) \& l! ^( l  Y$ `! G8 k
        <w - 5*Q5.1, 1>,
      }' S# E4 \  \* R; G  u6 d    <w + 5*Q5.1, 1>3 W- L" p4 F5 X( [4 B  @
    ]- [( G5 c- ~9 T- u5 v, X1 T
    -8
    3 c# i0 ~* d, E: f4 E+ K" I( D  V% R' S
    >> FundamentalUnit(Q5) ;# }8 O' B2 M0 v2 u9 W  W6 O8 K7 y
                      ^7 d0 ?/ A+ B& x! {0 B6 k; ~
    Runtime error in 'FundamentalUnit': Field must have positive discriminant5 b: w9 S$ P( R- }0 O7 B
    " w/ E, T  O; A* s6 a, u8 T
    , S' }$ R% ~& {% D. {
    >> FundamentalUnit(M);) ]  f1 g* X% Y" r9 f8 Z6 j
                      ^7 i* z/ ]* |, a# ], O
    Runtime error in 'FundamentalUnit': Field must have positive discriminant
    # i. C0 Z5 a7 e. o" @$ T; s
    8 n: Y- \( h! X4 H5 J8
    7 D7 D+ E1 }1 S' O9 v# O0 H7 l9 d9 w' l" P* e) W
    >> Name(M, -50);. a; I, s6 N. }/ \8 i
           ^7 s4 |$ P) N9 T) ]* y
    Runtime error in 'Name': Argument 2 (-50) should be in the range [1 .. 1]" F; b8 K1 R; Z: @2 H" G

    - `8 u2 h% b1 ]0 H6 w# k1
    $ P% S' T" z/ aAbelian Group of order 1
    / n8 W) v" C& eMapping from: Abelian Group of order 1 to Set of ideals of M7 L% m+ q7 x  |
    Abelian Group of order 1, J  }8 H2 ~' X! N; X1 R$ w
    Mapping from: Abelian Group of order 1 to Set of ideals of M- k' X  W, Q) J$ h
    19 |( D5 F# g1 G! a1 a
    1: d7 r# g( e+ `3 v
    Abelian Group of order 1, G/ h" J( k0 F  @1 T: \6 x
    Mapping from: Abelian Group of order 1 to Set of ideals of M given by a rule [no
    : q* ], R1 t; A4 @% yinverse]
    # G. i& E$ M) f% i4 G( \; B1
    * e1 D2 o( m  l9 s6 Y- xAbelian Group of order 12 W1 R8 m3 ?7 T  M. x/ E+ }
    Mapping from: Abelian Group of order 1 to Binary quadratic forms of discriminant
    " j7 r6 `/ T, f-8 given by a rule [no inverse]: }9 q: i& N9 c5 B
    Abelian Group of order 1
    $ [" a/ N6 _4 S! N$ ]8 UMapping from: Abelian Group of order 1 to Binary quadratic forms of discriminant
    # J* n. X2 O8 `' q* K-8 given by a rule [no inverse]* b/ ?2 @3 [% F; E" {( f: }
    false" |/ P5 p( [, }2 R5 h; b' j1 d
    false
    ; J; E' }: p( @" O0 m
    zan
    转播转播0 分享淘帖0 分享分享0 收藏收藏0 支持支持0 反对反对0 微信微信
    lilianjie        

    43

    主题

    4

    听众

    204

    积分

    升级  52%

  • TA的每日心情
    开心
    2012-1-13 11:05
  • 签到天数: 15 天

    [LV.4]偶尔看看III

    看看-1.-3的两种:
    ; E5 G. A* Y0 u. B1 _1 m. x' h/ g/ m' E8 G  `
    Q5:=QuadraticField(-1) ;
    9 N) q* ?, d0 s6 V4 f1 E$ i7 @Q5;
    " l  `0 p' m5 ~+ t
    3 Y6 _/ D" A  J6 W! V& j5 _: JQ<w> :=PolynomialRing(Q5);Q;
    $ |- K& G# Q8 G1 \' j. u) UEquationOrder(Q5);3 v, ]' ?0 }- ]8 W- q! H0 }
    M:=MaximalOrder(Q5) ;
    2 s1 J2 }& @6 a) S' {0 f6 zM;& O) A- s- v9 Z) P
    NumberField(M);$ F6 d- r: n* G/ h  q( O7 W. T5 a0 ~
    S1:=sub< M | 1 >;S2:=sub< M | 2 >;S3:=sub< M | 3 >;S4:=sub< M | 4 >;S5:=sub< M | 5 >;S25:=sub< M | 25 >;S625888888:=sub< M | 625888888 >;S625888888;/ l2 U! h, l+ T: g- m) r4 b
    IsQuadratic(Q5);
    ! H6 ~+ Z& r8 x' C4 }IsQuadratic(S1);
    , V8 D) [2 ~5 ^" b2 @IsQuadratic(S4);) X, r9 v9 U5 j1 k; e7 a$ b
    IsQuadratic(S25);
    ! o8 x7 ~" r* S' f$ j% cIsQuadratic(S625888888);
      K" ?3 H* }8 x2 Q) EFactorization(w^2+1);  * T1 u* u# |( w$ R/ H( Z% ~
    Discriminant(Q5) ;+ k0 n: g' [! {* f  {$ l
    FundamentalUnit(Q5) ;
    / E% x5 ]" u' U; _& A2 |FundamentalUnit(M);
    % Q4 v5 _# d5 U* \Conductor(Q5) ;
    1 r0 f* [9 S! P& }: @8 d  x' d. J% J7 P  p; _2 [& p. d
    Name(M, -1);
      p! R% ?  x+ }8 K! cConductor(M);  v: v/ ?# ]7 L) q4 {3 p: u. I
    ClassGroup(Q5) ;
    & v) f$ p+ D0 I+ lClassGroup(M);
    1 R3 w+ U/ w. A# MClassNumber(Q5) ;: c0 B# G' a/ q; w, D9 }
    ClassNumber(M) ;
    ' l9 z0 y$ R) I; GPicardGroup(M) ;
    7 N, p% @6 b3 G7 S- bPicardNumber(M) ;
    9 C. u! I' B, i& m+ D, b$ y% E8 c( A- }9 T8 N" F! C' W
    QuadraticClassGroupTwoPart(Q5);
    ! z* }- }, b5 I/ s% dQuadraticClassGroupTwoPart(M);# ]' f$ I5 ~* h3 S8 ?
    NormEquation(Q5, -1) ;. r: k: l0 V8 ^7 a+ O5 |
    NormEquation(M, -1) ;& ~) W# |( d5 T) `, @
    & p( |7 @+ m0 R# Q
    Quadratic Field with defining polynomial $.1^2 + 1 over the Rational Field
    $ u+ l) }4 w! D$ nUnivariate Polynomial Ring in w over Q5, }# x2 m% }4 H5 j! _0 Q- `
    Equation Order of conductor 1 in Q5
    ! g% i% x* K4 e5 p5 P" j8 \Maximal Equation Order of Q5; v+ @+ m8 p2 ^3 g5 Q6 O' B' C2 q
    Quadratic Field with defining polynomial $.1^2 + 1 over the Rational Field
    * I) H2 T4 L7 d: t- l% z5 K' w# mOrder of conductor 625888888 in Q52 p4 K$ A/ s* o
    true Quadratic Field with defining polynomial $.1^2 + 1 over the Rational Field
    3 x# F) m+ D3 J0 S% L/ mtrue Maximal Equation Order of Q5
      m% u# S. u) L7 w0 \0 P  W; ~* itrue Order of conductor 1 in Q5
    9 X3 X! O$ T( q. f; ]6 M+ qtrue Order of conductor 1 in Q5
    : H/ C! ?' o" Q* b: U; n/ Z, Ptrue Order of conductor 1 in Q5
    3 X0 r: g! S+ Q0 _% G" T[
    + p' b# l3 Q- `9 Z7 v    <w - Q5.1, 1>,
    $ E, H1 T7 g8 m/ ^3 u    <w + Q5.1, 1>
    * V/ x  D/ f1 {. s4 X) N]6 M1 w+ |2 B8 x. {. v# t
    -4  Q+ o; H; c: i
    1 i8 ?: X; E! X; k3 D
    >> FundamentalUnit(Q5) ;5 \. K9 |& ^$ l' a& T7 I
                      ^0 R% A, D; [: E; m8 C5 |: \8 a
    Runtime error in 'FundamentalUnit': Field must have positive discriminant
    * ^2 I% \, n, K& R: y( f
    8 t6 [2 \" g% s5 I
    8 D* b( j# r* p" d: b>> FundamentalUnit(M);
    3 M; r- L9 |( e, s# m                  ^" F% _- N! Y" ?& Y- X
    Runtime error in 'FundamentalUnit': Field must have positive discriminant5 R9 ~# R: g: c  p: u

    " s' W) a: p0 @2 A; s43 }* G4 y/ }& o+ e. _1 a+ e( h
    0 ?; N& D$ R2 ]
    >> Name(M, -1);: m9 Z1 R6 ^2 ^+ x$ s; L. w
           ^
    9 T7 i/ X9 }- H$ ]Runtime error in 'Name': Argument 2 (-1) should be in the range [1 .. 1]
      a+ P, I! ^4 N* P5 Z4 V& I
    : Z. ]! |7 [' u$ g) R- m  }) d3 R1
    2 ^' w* V& B# e$ e( z4 YAbelian Group of order 1" R( f6 r% z4 _8 o) S+ ]
    Mapping from: Abelian Group of order 1 to Set of ideals of M
    % l1 s8 f, N2 z  S! `) FAbelian Group of order 1. {' A1 q( _! m: O
    Mapping from: Abelian Group of order 1 to Set of ideals of M7 P9 c* w# R1 [& W+ _; Z
    14 m, N6 f, \2 a. t' S8 _# A- i8 j2 @
    1
    ' L% I, R7 f! N* g" zAbelian Group of order 1
    0 U5 z4 W  g) X1 l6 TMapping from: Abelian Group of order 1 to Set of ideals of M given by a rule [no
    * l. A0 h( |6 i3 i, Y0 W$ minverse]& M/ U2 v. ~, V+ u- d( K
    1# d* z; l* T9 y& o$ ?. ]3 _# U4 r
    Abelian Group of order 1
    - c6 ^6 K3 K2 W9 n6 l! ]Mapping from: Abelian Group of order 1 to Binary quadratic forms of discriminant
    ' A5 P' e  l6 @& N/ o2 N1 w-4 given by a rule [no inverse]+ ?# K6 p% P0 {
    Abelian Group of order 1
    : t5 {  N, S2 u/ p0 UMapping from: Abelian Group of order 1 to Binary quadratic forms of discriminant* p3 H1 B9 m- v' Z+ b
    -4 given by a rule [no inverse]
    $ r0 Q) |3 n/ a1 o/ ?0 _false
    : A; O- o" w+ W6 i; \false
    $ B" h( t, O0 z/ o: U! s1 L===============3 t7 _8 N. r- Z0 K* F
    0 u' I& D( a: Y0 N* A1 ?! E
    Q5:=QuadraticField(-3) ;. o) O5 `, x0 c$ |0 @  n* q7 Y
    Q5;
    ) y: T5 [9 g: G' |6 _2 s* C% n
    ! N; K% X( U4 E# c: E* gQ<w> :=PolynomialRing(Q5);Q;
    3 J6 L# ]+ Q, i1 C& wEquationOrder(Q5);
    : J& ?' U, c2 PM:=MaximalOrder(Q5) ;: e& {3 v4 V7 V8 o; X" ?5 V
    M;
    " L- h# V7 v6 h* n: S; Y1 JNumberField(M);
    ) p) m+ T8 v" o( g3 i3 H' GS1:=sub< M | 1 >;S2:=sub< M | 2 >;S3:=sub< M | 3 >;S4:=sub< M | 4 >;S5:=sub< M | 5 >;S25:=sub< M | 25 >;S625888888:=sub< M | 625888888 >;S625888888;
    ' n$ C: H% O) _9 O- G7 l6 Z3 i: AIsQuadratic(Q5);( x+ b7 L7 T. X; o1 G, _
    IsQuadratic(S1);# v- K  F* m3 ?: h! i  w' {
    IsQuadratic(S4);
    7 c8 N2 q: `, w7 ^* B7 J) G% [IsQuadratic(S25);% Y0 Q4 r: V' j  U
    IsQuadratic(S625888888);8 l* H3 f3 i" k! q2 t0 w% Y7 A, A
    Factorization(w^2+3);  
    $ I9 |- s$ W4 k1 nDiscriminant(Q5) ;+ e  w. y3 K4 x, U% e) w- G9 c
    FundamentalUnit(Q5) ;) T; Z$ F( \5 P' b. A4 p
    FundamentalUnit(M);
    ' X+ K& z& {* }8 r5 A9 V" {$ d$ ?Conductor(Q5) ;, c. R+ I; m4 C3 c

    ! T/ a2 o& y' K+ B4 u, i3 zName(M, -3);" d" j' w& r( H
    Conductor(M);
    9 ?1 X  {1 W% N3 X  J( y. g7 [ClassGroup(Q5) ;
    & p2 Y; @. a& d( \; vClassGroup(M);. A/ X; }! q) y* W( N8 C
    ClassNumber(Q5) ;% n) K& I  k( D) s9 D2 U
    ClassNumber(M) ;9 J3 i5 w/ E4 t
    PicardGroup(M) ;
    % n: V+ a7 T; ?3 v5 i% J( q/ tPicardNumber(M) ;' ?% W* N5 d' C1 f$ m: S* u' ?
    ! h* z$ O$ Y* T, w; ~
    QuadraticClassGroupTwoPart(Q5);1 V& o1 k8 g& X0 r! ?! W
    QuadraticClassGroupTwoPart(M);
    , f6 n: G# c1 R" M/ @/ A* JNormEquation(Q5, -3) ;
    9 ?0 x' g( Z) I+ P% C' eNormEquation(M, -3) ;( L3 `, C3 C! S& \: F  z! |1 M

    2 T0 r7 L0 Y* c% h% gQuadratic Field with defining polynomial $.1^2 + 3 over the Rational Field: i5 \$ t5 s5 K3 v$ K
    Univariate Polynomial Ring in w over Q54 |* ^: }+ C6 ^* A# U0 |+ R
    Equation Order of conductor 2 in Q5
    $ J: p, n- y% Y( aMaximal Order of Q5
    " |. N" j) ]* _9 |( ~6 bQuadratic Field with defining polynomial $.1^2 + 3 over the Rational Field# }1 _  a' l2 N7 E2 A; j  v5 `
    Order of conductor 625888888 in Q50 N- M  Q4 _* s  {7 n% A% |- Y& u
    true Quadratic Field with defining polynomial $.1^2 + 3 over the Rational Field
    8 d) {+ a+ N7 F$ ?! Ptrue Maximal Order of Q5. C. q* I* L' i' |  Z# R
    true Order of conductor 16 in Q5
    : c6 L) L+ d& Htrue Order of conductor 625 in Q5
    & _; y( b' m$ O  P! f: I( ?8 D+ P! Utrue Order of conductor 391736900121876544 in Q56 \0 ^+ n/ [6 z9 T7 P/ y
    [
    ! u4 _1 S  O" M4 ]: r    <w - Q5.1, 1>,
    ! R4 D) j) ^$ P9 R5 n6 x$ d    <w + Q5.1, 1>
    : b: F: M5 @% f2 k9 b. c. B]3 ?" J# F/ x# q$ A, Q
    -3- f1 l+ v# N' M7 b( L" T" m4 ^, d
    & g( B% E( g2 i/ C. L
    >> FundamentalUnit(Q5) ;
    % G. O# r/ [* f: I$ j7 T                  ^
    / b0 j' Q+ V6 o: ERuntime error in 'FundamentalUnit': Field must have positive discriminant+ I9 B- X; W8 V

    - }8 Q7 l0 W* m' Z" ]) T2 s9 l2 }% `1 s$ E- e& ^
    >> FundamentalUnit(M);
    7 A) U! Q  J+ e  T1 e  |6 h                  ^& ~9 t/ b3 Y2 q4 Q4 V7 j0 ^  R
    Runtime error in 'FundamentalUnit': Field must have positive discriminant: T1 x1 h% E5 L3 W, n; y
    3 S) u5 x4 E/ ]: B
    3
    8 M( f) i6 O" C2 Q5 l$ {* a+ r6 z2 t9 l4 J- @( j
    >> Name(M, -3);
    9 n/ R. }/ U2 ^/ w' D6 W       ^
    ! m. e1 {  Y2 N+ v" DRuntime error in 'Name': Argument 2 (-3) should be in the range [1 .. 1]; ~/ w# K, I/ u( b$ n! |4 @
    0 }2 Q: g& M# n
    1
    ; G: q+ }: Y+ u% |) sAbelian Group of order 1
    % j" E$ M$ j& B7 sMapping from: Abelian Group of order 1 to Set of ideals of M
    % o2 U) \* U. ?1 b. t8 x7 hAbelian Group of order 1
    % N, W; z0 Y* |6 jMapping from: Abelian Group of order 1 to Set of ideals of M* |; b! Q6 l8 a# A$ K8 G' h
    1
    2 x# o- A5 \% s# q% I' {5 M1, V$ E! \+ ?* q
    Abelian Group of order 1- [/ b: A& g: H
    Mapping from: Abelian Group of order 1 to Set of ideals of M given by a rule [no5 \6 J! Q# R5 b& Z$ k$ P* \
    inverse]
    " {2 t% o8 E4 F+ Y1, W  }% g3 x+ L7 d% U# W
    Abelian Group of order 1" ]/ p2 H. T" \/ D
    Mapping from: Abelian Group of order 1 to Binary quadratic forms of discriminant% p  {+ v6 i  h- U1 V, M' a+ \& u
    -3 given by a rule [no inverse]
    + V  Y. |, w$ I) fAbelian Group of order 1! x2 R* T- {% d- V# S
    Mapping from: Abelian Group of order 1 to Binary quadratic forms of discriminant; k6 l) X/ P: |% s4 ?8 f
    -3 given by a rule [no inverse]
    ! _. m4 B0 G. T/ ?false
    " s# L/ q% x7 l7 F  f% wfalse
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    2015-9-4 00:52
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    [LV.9]以坛为家II

    社区QQ达人 邮箱绑定达人 发帖功臣 最具活力勋章

    群组数学建摸协会

    群组Matlab讨论组

    群组小草的客厅

    群组数学建模

    群组LINGO

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    2012-1-13 11:05
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    [LV.4]偶尔看看III

    本帖最后由 lilianjie 于 2012-1-5 15:20 编辑 ( p7 J# M0 M# T: t

    ; D; J% z8 e3 i6 N: YDirichlet character/ G- L. U8 z9 W! w
    Dirichlet class number formula, D8 k1 R% q" Q: [4 g
    + y+ \& h9 w/ \4 d9 U
    虚二次域复点1,实点为0,实二次域复点0,实点为2,实二次域只有两单位根
    ; d# k( I* C8 M$ a$ B' F  e5 J; X0 g
    -1时,4个单位根1,-1, i, -i,w=4,            N=4,互素(1,3),    (Z/4Z)*------->C*      χ(1mod4)=1,χ(3mod4)=-1,h=4/(2*4)*Σ[1*1+(3*(-1)]=1
    6 ~/ q. J9 R: i' `  J. o4 D  X% k* P5 a5 s  z2 C
    -3时  6个单位根                             N=3  互素(1,2),    (Z/3Z)*------->C*         χ(1mod3)=1,χ(2mod3)=-1,( H0 {, W; A4 [6 c- a( l" j* `
    h=-6/(2*3)*Σ[1*1+(2*(-1)]=16 y+ X0 s' U: S; l8 }( \
    8 Q! X. Z9 v5 X  N
    -5时  2个单位根                              N=20   N=3  互素(1,3,7,9,11,13,17,19),    (Z/5Z)*------->C*         χ(1mod20)=1,χ(3mod20)=-1, χ(7mod20)=1, χ(9mod20)=1,χ(11mod20)=1,χ(13mod20)=1,χ(17mod20)=1,χ(19mod20)=1,
    4 m$ @. j' Y# R% U" @; b7 E& Q3 g! p! ?5 l
    : l# _/ ~& o. ~: C% x  S& l0 O

    - E, ?" P* T& [5 a0 e* ph=2/(2*20)*Σ[1*1-3*1-7*1+9*1-11*1-13*1+17*1+19*1]=2+ Y8 H6 Z6 O# g$ o& D' Y9 ~

    0 Y% t( i' Z  |- i" C& t, \8 [: B! r9 I; ?1 W8 F7 f6 R$ |9 w, h

    $ w) l; U0 ]0 r- f0 j-50时  个单位根                          N=200
    # k- w2 r# {/ o# L  B4 ^
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    [LV.3]偶尔看看II

    Dirichlet character

    21.JPG (79.18 KB, 下载次数: 180)

    21.JPG

    11.JPG (74.76 KB, 下载次数: 179)

    11.JPG

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    [LV.3]偶尔看看II

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    [LV.4]偶尔看看III

    本帖最后由 lilianjie 于 2012-1-9 20:30 编辑 ) x; d) n% h& o9 B" A: f3 ~
    8 u1 n* i* B( V9 B
    F := QuadraticField(NextPrime(5));2 |, M8 Y0 I( o3 t7 W

    4 H8 y) }& t1 vKK := QuadraticField(7);KK;
    ' e- w! Q& @7 i) x. F! U9 [3 b( _K:=MaximalOrder(KK);
    / p7 `* \9 {! U; GConductor(KK);7 s0 T6 ?* S" ]1 |! C" t
    ClassGroup(KK) ;
    ; J) @0 V' ]( ?4 ZQuadraticClassGroupTwoPart(KK) ;* x% b" `: e, M; x
    NormEquation(F, 7);
    ( Y. T2 X( s; P, X. a5 \. d+ k3 i2 sA:=K!7;A;) @& x: R7 J8 b8 ?% F5 C) M
    B:=K!14;B;
    1 Z; k+ Z1 E/ P9 P% Q0 @Discriminant(KK)
    / i% d0 }/ i5 Z$ i% A2 r& t; t! h) }# X6 V
    Quadratic Field with defining polynomial $.1^2 - 7 over the Rational Field3 l7 A6 p9 @9 _" I8 w3 b9 H
    28
      G% m/ M' E1 S+ [Abelian Group of order 1! j7 w9 f3 B% c
    Mapping from: Abelian Group of order 1 to Set of ideals of K- z- @2 [$ D8 Z" _; V- r# ?
    Abelian Group isomorphic to Z/2
    . C6 V& e/ ]9 k3 ^: jDefined on 1 generator
    8 \/ h8 ~) {  o4 [: vRelations:
    5 V8 [  d/ e; p/ ]# E  c    2*$.1 = 0; p& @& n6 J' _
    Mapping from: Abelian Group isomorphic to Z/21 B, b- ?- J/ S
    Defined on 1 generator" l6 o' w  x6 T" S8 ^; W2 u
    Relations:* \3 M9 K0 K. s# t
        2*$.1 = 0 to Binary quadratic forms of discriminant 28 given by a rule [no & p3 B1 d) j1 A" Y1 ~& h# A
    inverse]
    ( s" e# O4 [& @) V# f& ?false! R5 F. E8 z% T1 z
    7
    # d7 x3 b6 o( z) R8 x2 Z14
      {: p) j7 K7 g28
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    [LV.4]偶尔看看III

    本帖最后由 lilianjie 于 2012-1-10 11:23 编辑
      G8 e2 \5 S: h7 g
    # G3 {5 x; U, B) j  T6 {$ y5 D 11.JPG 1 ^, L" }+ v( G. y; n( k

    ) U: {, P- t5 J) x" c 3212.JPG   ~7 T8 G* V- U7 D; D5 Q
    " U5 l$ X/ ~0 S4 I6 _( i, J2 ^0 r
    123.JPG
    & W8 u) s: Z7 a- I+ F6 b5 ~/ Z) E+ J' Q" b
    分圆域:
    - a* W  \+ s$ TC:=CyclotomicField(5);C;, i, P: j. ~4 t4 A
    CyclotomicPolynomial(5);
    - d5 [5 H, s$ w  L+ G! y* pC:=CyclotomicField(6);C;4 ~8 V" C# ~& t6 P% G8 Z% G
    CyclotomicPolynomial(6);
    & l% I! ]/ k/ Y' BCC:=CyclotomicField(7);CC;
    , f( O9 S+ C) V$ LCyclotomicPolynomial(7);
    - j. A1 ~$ W. F$ e7 I2 ]* {MinimalField(CC!7) ;! Y" q) ?  \0 N* V. h  y- q$ z
    MinimalField(CC!8) ;9 k$ A. @  u! c8 e5 N  [  x
    MinimalField(CC!9) ;
    4 _& m5 @  S4 H1 Z9 {( mMinimalCyclotomicField(CC!7) ;
    ( i$ s- E4 B1 uRootOfUnity(11);RootOfUnity(111);
    ) k+ l1 ?! y7 V7 kMinimise(CC!123);/ P. I& o  K4 q
    Conductor(CC) ;
    4 X. c3 I; c% e( V$ h, y, }CyclotomicOrder(CC) ;4 B9 p( m, s, H& H8 G& Q

    ' v, b! H0 t# ~CyclotomicAutomorphismGroup(CC) ;) l, I: S* k/ {/ K+ _$ L

    , m3 N8 q7 W! |Cyclotomic Field of order 5 and degree 45 y! v' w6 ~, b
    $.1^4 + $.1^3 + $.1^2 + $.1 + 1. N' o8 ~  |1 h% n: j- D
    Cyclotomic Field of order 6 and degree 26 O+ J# E" I, A4 m2 ?
    $.1^2 - $.1 + 1& H# l. ^, i) Z* ?  O
    Cyclotomic Field of order 7 and degree 6
      g% ^2 p- N: ^  B" e6 d$ F- o$.1^6 + $.1^5 + $.1^4 + $.1^3 + $.1^2 + $.1 + 1
    7 N4 c% E6 ?" i  Q* o6 YRational Field
    % k7 j4 U, g% w2 o9 K( [Rational Field7 @9 \, h  Z4 Q( I
    Rational Field
    & T3 P7 E# P$ }* qRational Field
    0 W+ M+ R0 v5 S2 Q" Z% ]  V1 ]9 Dzeta_11: q. R" Z& t# q. W% {( f6 D
    zeta_1119 ~! y* H* c$ f7 G; ^3 i- e# A
    1237 z  ?' N7 U' t1 O
    71 I/ c1 ^# Z8 i& W
    7$ H- A1 l$ x4 n: t. i" Q: Z* S* {- C
    Permutation group acting on a set of cardinality 6+ E4 c+ ~& j7 x
    Order = 6 = 2 * 3
    1 V# T% n7 Y" Q9 s; @0 v  r7 R6 c3 o    (1, 2)(3, 5)(4, 6)
    9 a0 Z5 T5 |6 U    (1, 3, 6, 2, 5, 4)* L' R" b# @3 G! ]2 |) Q
    Mapping from: GrpPerm: $, Degree 6, Order 2 * 3 to Set of all automorphisms of - m" ^- |6 {4 X4 R
    CC/ K4 U+ T  Z! g
    Composition of Mapping from: GrpPerm: $, Degree 6, Order 2 * 3 to GrpPerm: $,
    3 ^6 M4 l9 z5 @3 N  ZDegree 6, Order 2 * 3 and
    4 Z1 x% F4 i4 g" }Mapping from: GrpPerm: $, Degree 6, Order 2 * 3 to Set of all automorphisms of 9 N  B' C) H' I/ T3 R
    CC
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    2012-1-13 11:05
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    [LV.4]偶尔看看III

    本帖最后由 lilianjie 于 2012-1-10 17:41 编辑
    : g% d9 {, f# N8 u7 H. k+ X
    lilianjie 发表于 2012-1-9 20:44
    / a8 |; c- [( i! y分圆域:
    " r# _/ E" g3 i" X- q: FC:=CyclotomicField(5);C;
    " n! U' p6 r$ U, P) G' m. m) A8 t# qCyclotomicPolynomial(5);
    3 C6 k5 b$ {5 `( c# N
    * ]' z1 @, _3 C! j' D& y9 m3 G
    分圆域:2 U" h- [5 r8 M- t
    分圆域:123. l( d- K$ p3 A' {

      x5 g: Y# d* V4 w- IR.<x> = Q[], c" t" G% ?, {0 ^
    F8 = factor(x^8 - 1)
    . o9 s% ~$ c" DF8; e- g/ q. L- M  G0 F
    ) i. j* |& V$ O% ], \2 g
    (x - 1) * (x + 1) * (x^2 + 1) * (x^4 + 1)(x - 1) * (x + 1) * (x^2 + 1) * (x^4 + 1)
    2 n* z% j9 b. q! l& p9 w8 \; N* ^0 b. k! J7 t4 ~
    Q<x> := QuadraticField(8);Q;
    ! e2 O( |/ P6 q. x7 z2 F( k: pC:=CyclotomicField(8);C;
    % S3 E5 }0 A2 T, J$ B- g0 uFF:=CyclotomicPolynomial(8);FF;
    4 @' \; {1 Y- F1 F) z) ^4 n8 r. R# D/ {( ^0 W, G0 e6 ~! P
    F := QuadraticField(8);3 i; V+ V) j5 z/ y. r
    F;9 ]4 Y; V, a7 a, b% s& t
    D:=Factorization(FF) ;D;0 s# [3 c. z5 F. f% w' t: V
    Quadratic Field with defining polynomial $.1^2 - 2 over the Rational Field
    / Y) ~4 }# @3 |: C' pCyclotomic Field of order 8 and degree 4
    . G, B/ z. L) Q- r1 C8 R5 h3 ~2 j$.1^4 + 1: i  a& h* Q9 @# ]9 x2 I7 P
    Quadratic Field with defining polynomial $.1^2 - 2 over the Rational Field
    ) s, ?" _8 Q7 W- \[3 _* o: |( b6 g4 W
        <$.1^4 + 1, 1>
    5 ^/ z$ y) r* {4 H]3 ~5 A& C, E: a$ H$ o7 o
    2 W7 G7 v* D& ~8 a
    R.<x> = QQ[]
    2 |2 Z$ L! E# C+ d8 S& l. TF6 = factor(x^6 - 1)" M1 M. D* z0 ]1 g1 \* W2 ^5 ~
    F6
    5 X3 U# S$ u. U; E7 {  ]1 B
    ( }% \: D4 u" A(x - 1) * (x + 1) * (x^2 - x + 1) * (x^2 + x + 1)(x - 1) * (x + 1) * (x^2 - x + 1) * (x^2 + x + 1)
    8 v5 j+ b& S1 h: F: k# X+ c% W! S# c4 I) \
    Q<x> := QuadraticField(6);Q;
    7 J, g! I# P2 j6 gC:=CyclotomicField(6);C;1 K, C. M1 r: ~+ ]
    FF:=CyclotomicPolynomial(6);FF;
    5 n+ }. i4 w; H7 Q9 J1 v5 I! G8 s% D" ?% [6 ^3 G4 S' P) ^
    F := QuadraticField(6);, [* ]' e' ^9 N6 w; j
    F;3 O1 ?( u- F2 u( O
    D:=Factorization(FF) ;D;
    7 Z" ?9 @, k8 S1 |; JQuadratic Field with defining polynomial $.1^2 - 6 over the Rational Field
    ) U" t+ M4 j: G4 ?; _- QCyclotomic Field of order 6 and degree 2
    $ I6 @8 G+ G: Y) E) Y5 w2 `$.1^2 - $.1 + 1
    $ Q9 M6 f: V: A( Y3 Z0 v9 C: XQuadratic Field with defining polynomial $.1^2 - 6 over the Rational Field
    / W1 c  z, {7 v1 n9 ]/ ]" E. U[9 J9 C- |3 s3 I' {$ k1 M) @( `& Y
        <$.1^2 - $.1 + 1, 1>2 @/ v2 E& \( z( }! A, N
    ]
    , n; m5 C4 ~4 x0 t, x$ ?. p* `
    9 V* b# I9 T# n" K) M3 x( }R.<x> = QQ[]
    0 S7 e+ X% q; Y! kF5 = factor(x^10 - 1)
    8 z2 H- X  K% ^1 U) ]0 YF5
    9 H& j2 \9 d% `) p# h9 U(x - 1) * (x + 1) * (x^4 - x^3 + x^2 - x + 1) * (x^4 + x^3 + x^2 + x +
    4 ]! w1 q7 f( B  _* F/ ]1)(x - 1) * (x + 1) * (x^4 - x^3 + x^2 - x + 1) * (x^4 + x^3 + x^2 + x + 1)& J, \2 \# r; B& G
    3 |; k9 R/ E. j: M/ F
    Q<x> := QuadraticField(10);Q;
    & b7 v  g# P# b" s9 eC:=CyclotomicField(10);C;$ M) T; r7 \* r# ^
    FF:=CyclotomicPolynomial(10);FF;8 V9 ^7 n0 v# i" l
    / c7 K- M- w. z9 j
    F := QuadraticField(10);& ]& q3 S  a- k$ m* W( U* j
    F;) S4 d- _% W' m; g5 ~
    D:=Factorization(FF) ;D;9 l. ]8 F, L$ L( ?# W
    Quadratic Field with defining polynomial $.1^2 - 10 over the Rational Field5 e3 a# x" P! r5 ]" t
    Cyclotomic Field of order 10 and degree 4! {8 ^* p- {6 `9 f, @, `
    $.1^4 - $.1^3 + $.1^2 - $.1 + 1
    4 W) [5 f$ v/ A3 ]& iQuadratic Field with defining polynomial $.1^2 - 10 over the Rational Field3 a1 e) U7 E+ b$ W0 q0 F4 Q- `
    [
    ' N( o- Q& d. d# M8 a/ z. q    <$.1^4 - $.1^3 + $.1^2 - $.1 + 1, 1>
    - W. J& I: Q4 p# H" {/ s]

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