We consider the problem of recovering N length vectors h that vanish on a given set of indices and satisfy h * h = h. We give some results on the structure of such h when N is a product of two primes, and investigate some bounds and their connections to certain graphs defined on ZN .
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.