rform: Random kforms and ktensors

In wedge: The Exterior Calculus

Description

Random k-form objects and k-tensors, intended as quick “get you going” examples

Usage

rform(terms=9,k=3,n=7,coeffs)
rtensor(terms=9,k=3,n=7,coeffs)

Arguments

terms	Number of distinct terms
k,n	A k-form maps V^k to R, where V=R^n
coeffs	The coefficients of the form; if missing use 1 (inherited from spray())

Details

What you see is what you get, basically.

Note that argument terms is an upper bound, as the index matrix might contain repeats. But coeffs should have length equal to terms (or 1).

Author(s)

Robin K. S. Hankin

Examples

rform()
rform(coeffs=1:9)   # any repeated rows are combined

dx <- as.kform(1)
dy <- as.kform(2)
rform() %^% dx
rform() %^% dx %^% dy


rtensor()

wedge documentation built on Sept. 4, 2019, 9:02 a.m.