This function computes a bitstring representation for a spread or star of
A spread or star of
This code obtains the bitstring representation (as described in Spencer et al. 2019) for any given spread or star of
PG(n-1,2). The spread should be formatted as a 3-dimensional array with
spr[i,j,k] indicating whether or not the
ith basic factor is present in the
jth effect of the
kth flat of
spr. This representation facilitates fast equivalence checking for spreads or stars.
A matrix with each row characterizing the elements of a distinct flat in spr.
Neil Spencer, Pritam Ranjan, Franklin Mendivil
Spencer, N.A., Ranjan, P., and Mendivil, F., (2019), "Isomorphism Check for 2^n Factorial Designs with Randomization Restrictions", Journal of Statistical Theory and Practice, 13(60),1-24 [https://doi.org/10.1007/s42519-019-0064-5]
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