petsc-3.13.6 2020-09-29

PetscDTAltVWedgeMatrix

Compute the matrix defined by the wedge product with a given j-form that maps k-forms to (j+k)-forms

#include "petscdt.h" 
PetscErrorCode PetscDTAltVWedgeMatrix(PetscInt N, PetscInt j, PetscInt k, const PetscReal *a, PetscReal *awedgeMat)

	N	- the dimension of the vector space, N >= 0
	j	- the degree j of the j-form a, 0 <= j <= N
	k	- the degree k of the k-forms that (a wedge) will be applied to, 0 <= k <= N and 0 <= j+k <= N
	a	- a j-form, size [N choose j]

awedge -(a wedge), an [(N choose j+k) x (N choose k)] matrix in row-major order, such that (a wedge) * b = a wedge b

intermediate