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math.CO2023
Betti Numbers of Prodsimplicial Complexes for Directed Graphs with Applications to Word Reductions
Lina Fajardo Gómez, Margherita Maria Ferrari, Nataša Jonoska +1
We propose custom made cell complexes, in particular prodsimplicial complexes, in order to analyze data consisting of directed graphs. These are constructed by attaching cells that…
math.CO2018
Insertions Yielding Equivalent Double Occurrence Words
Daniel A. Cruz, Margherita Maria Ferrari, Natasa Jonoska +2
A double occurrence word (DOW) is a word in which every symbol appears exactly twice; two DOWs are equivalent if one is a symbol-to-symbol image of the other. We consider the so ca…