rform: Random kforms and ktensors
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
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).
Examples
Run this code# NOT RUN {
rform()
rform(coeffs=1:9) # any repeated rows are combined
dx <- as.kform(1)
dy <- as.kform(2)
rform() %^% dx
rform() %^% dx %^% dy
rtensor()
# }
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