spielwiese
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Last change
on this file since a7efa79 was
a7efa79,
checked in by Hans Schönemann <hannes@…>, 16 years ago
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*hannes: new book version
git-svn-id: file:///usr/local/Singular/svn/trunk@10182 2c84dea3-7e68-4137-9b89-c4e89433aadc
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-
Property mode set to
100644
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File size:
526 bytes
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| 1 | LIB "tst.lib"; |
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| 2 | tst_init(); |
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| 3 | |
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| 4 | =============================== example 1.9.30 ============================== |
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| 5 | |
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| 6 | LIB "ncalg.lib"; |
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| 7 | def A0 = makeUsl2(); setring A0; |
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| 8 | option(redSB); option(redTail); |
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| 9 | ideal I = e2,f2,h2-1; |
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| 10 | I = twostd(I); |
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| 11 | print(matrix(I)); // ideal in a compact form |
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| 12 | |
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| 13 | qring A = I; // we move to a GR--algebra A |
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| 14 | ideal Ke = modulo(e,0); |
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| 15 | Ke = std(Ke+std(0)); // normalize Ke w.r.t. the factor ideal |
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| 16 | Ke; |
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| 17 | |
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| 18 | ideal Kh = modulo(h-1,0); |
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| 19 | Kh = std(Kh+std(0)); |
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| 20 | Kh; // the kernel of h-1 |
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| 21 | |
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| 22 | tst_status(1);$ |
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| 23 | |
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