spielwiese
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Last change
on this file was
894057,
checked in by Oleksandr Motsak <motsak@…>, 13 years ago
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ADD: Tests from online manual (res+stat on mamawutz): short ones Tst/Manual/s.lst
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Property mode set to
100644
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File size:
459 bytes
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| 1 | LIB "tst.lib"; tst_init(); |
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| 2 | LIB "central.lib"; |
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| 3 | ring AA = 0,(x,y,z),dp; |
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| 4 | matrix D[3][3]=0; |
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| 5 | D[1,2]=-z; D[1,3]=2*x; D[2,3]=-2*y; |
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| 6 | def A = nc_algebra(1,D); setring A; // this algebra is U(sl_2) |
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| 7 | // find a basis of the vector space of all |
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| 8 | // central elements of degree <= 4: |
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| 9 | ideal Z = centerVS(4); |
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| 10 | Z; |
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| 11 | // note that the second element is the square of the first |
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| 12 | // plus a multiple of the first: |
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| 13 | Z[2] - Z[1]^2 + 8*Z[1]; |
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| 14 | inCenter(Z); // check the result |
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| 15 | tst_status(1);$ |
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