spielwiese
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Last change
on this file since a6e7454 was
a6e7454,
checked in by Viktor Levandovskyy <levandov@…>, 20 years ago
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nontrivial examples from Plural doc
git-svn-id: file:///usr/local/Singular/svn/trunk@6653 2c84dea3-7e68-4137-9b89-c4e89433aadc
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Property mode set to
100644
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File size:
337 bytes
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| 1 | LIB "tst.lib"; |
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| 2 | tst_init(); |
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| 3 | ring r=0,(x,y,z),dp; |
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| 4 | matrix d[3][3]; |
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| 5 | d[1,2]=-z; |
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| 6 | d[1,3]=2x; |
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| 7 | d[2,3]=-2y; |
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| 8 | system("PLURAL",1,d); |
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| 9 | // it is algebra U(sl_2) |
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| 10 | int N=3; |
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| 11 | poly f=1; |
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| 12 | for(int n=0;n<=N;n++) |
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| 13 | { |
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| 14 | f=f*(z+N-2*n); |
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| 15 | } |
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| 16 | f; |
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| 17 | ideal i=x^(N+1),y^(N+1),f; |
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| 18 | option(redSB); |
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| 19 | option(redTail); |
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| 20 | ideal I=std(i); |
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| 21 | I; |
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| 22 | ideal J=system("twostd",i); |
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| 23 | J; |
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| 24 | tst_status(1);$ |
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