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D.15.13.26 integralSection
Procedure from librarymultigrading.lib (see multigrading_lib).
- Purpose:
- for a given linear surjective map P of lattices
this procedure returns an integral section of P. - Returns:
- intmat
LIB "multigrading.lib"; intmat P[2][4] = 1,3,4,6, 2,4,5,7; // should be a matrix with two columns // for example: [-2, 1, 0, 0], [3, -3, 0, 1] intmat U = integralSection(P); print(U); ==> -1 1 ==> -2 1 ==> 2 -1 ==> 0 0 print(P * U); ==> 1 0 ==> 0 1 kill U; |