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math.RA2025
Equivalent of Multivariate Polynomial Matrix
Jinwang Liu, Tao Wu, Jiancheng Guan +1
The equivalence of multidimensional systems is closely related to the reduction of multivariate polynomial matrices, with the Smith normal form of matrices playing a key role. So f…
math.CO2025
The square of every subcubic planar graph without 4-cycles and 5-cycles is 7-choosable
Ligang Jin, Yingli Kang, Seog-Jin Kim
The square of a graph , denoted by , has the same vertex set as and has an edge between two vertices if the distance between them in is at most . Thomassen (2018…