PetscDTAltVApply#
Apply an a k-form (an alternating k-linear map) to a set of k N-dimensional vectors
Synopsis#
#include "petscdt.h"
PetscErrorCode PetscDTAltVApply(PetscInt N, PetscInt k, const PetscReal *w, const PetscReal *v, PetscReal *wv)
Input Parameters#
N - the dimension of the vector space, N >= 0
k - the degree k of the k-form w, 0 <= k <= N
w - a k-form, size [N choose k] (each degree of freedom of a k-form is associated with a subset of k coordinates of the N-dimensional vectors. The degrees of freedom are ordered lexicographically by their associated subsets)
v - a set of k vectors of size N, size [k x N], each vector stored contiguously
Output Parameter#
wv - w(v_1,…,v_k) = \sum_i w_i * det(V_i): the degree of freedom w_i is associated with coordinates [s_{i,1},…,s_{i,k}], and the square matrix V_i has entry (j,k) given by the s_{i,k}’th coordinate of v_j
See Also#
PetscDTAltV, PetscDTAltVPullback(), PetscDTAltVPullbackMatrix()
Level#
intermediate
Location#
Index of all DT routines
Table of Contents for all manual pages
Index of all manual pages