COUNTING PATHS OF GRAPHS VIA INCIDENCE MATRICES


Maurizio Imbesi, Monica La Barbiera

Operating only by means of the incidence matrix of a connected graph G, a new algebraic combinatorial method for determining the paths of length (q−1) of G together with the generators of the corresponding generalized graph ideal Iq(G) is discussed and developed. The stated formulae are obtained and shown even by changing techniques appropriately when the difficulties of calculation increased.

MSC: 05B20, 05C38, 05C50

Keywords: Combinatorics, incidence matrices, paths, graph ideals.

DOI              10.56082/annalsarscimath.2024.1.57

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maurizio.imbesi@unime.it Address Department of Mathematical and Computer Sciences, Physical and Earth Sciences, University of Messina, Italy. The research that led to the paper was partially supported by a grant of the group GNSAGA of INdAM, Italy

monica.labarbiera@unict.it Address Department of Electrical, Electronic and Computer Engineering, University of Catania, Italy


PUBLISHED in Annals Academy of Romanian Scientists Series on Mathematics and Its ApplicationVolume 16 no 1, 2024