Probability of Z without knowing the dataset. It also gives the exact number of binary nilpotent matrices of size p.
ProbaZ(Z = NULL, p = NULL, proba = FALSE, star = TRUE)
binary adjacency matrix of the structure (size p)
the number of covariates
gives the proba under the uniform law for Z. if FALSE and star=FALSE it gives the number of p-sized binary nilpotent matrices
gives the log proba under uniform law for p2