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View File Name :
_sym__Ext.out
-- -*- M2-comint -*- hash: 15671659374678265335 i1 : S = ZZ/32003[x_0..x_2]; i2 : E = ZZ/32003[e_0..e_2, SkewCommutative=>true]; i3 : M = coker matrix {{x_0^2, x_1^2}}; i4 : m = presentation truncate(regularity M,M); 4 8 o4 : Matrix S <-- S i5 : symExt(m,E) o5 = {-1} | e_2 0 0 0 | {-1} | e_1 e_2 0 0 | {-1} | e_0 0 e_2 0 | {-1} | 0 e_0 e_1 e_2 | 4 4 o5 : Matrix E <-- E i6 :