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IMI/Publicaţii/QRS/Ediţii/QRS v.31, n.1 (49), 2023/

On central digraphs constructed from left loops and loops

Authors: R. Rawat

Abstract

Let An be the set of n X n zero-one matrices satisfying the matrix equation A2 = Jn; where Jn is n X n matrices of all ones. In this article, it is proved that the number of non-isomorphic left loops of order k gives the lower bound to the size of An for n = k2. Mainly we have established that any matrix in An corresponding to loop has rank 2k - 2, where n = k2, for some positive integer k.

Department of Mathematics
Central University of South Bihar
Gaya - 824236
Bihar, India
E-mail: ,

DOI

https://doi.org/10.56415/qrs.v31.09

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