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math.CO2026
Counting contiguous superregular matrices
Carlo Sanna
This short paper has two goals. First, explaining a simple procedure (which is essentially folklore) that, sometimes, makes it possible to obtain a formula for the number of soluti…
math.CO2024
On the number of solutions to a random instance of the permuted kernel problem
Carlo Sanna
The Permuted Kernel Problem (PKP) is a problem in linear algebra that was first introduced by Shamir in 1989. Roughly speaking, given an matrix and an…