A balanced 1-spread of PG(3,2) obtained via cyclic construction
The spread is formatted as a 3-dimensional array, where the
[i,j,k]-th element indicates whether or not the
ith basic factor is present in the
jth effect of the
kth flat of the spread.
The spread consists of five subspaces f_1, f_2, f_3, f_4, f_5 given by f_1=(D,BC,BCD), f_2 = (C,AB, ABC), f_3 = (B,ACD, ABCD), f_4 = (A,BD, ABD) and f_5=(CD,AC,AD).
In R, the data must be loaded using the
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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