Mika Mattila

activity

20112022

most citedOn the eigenvalues of combined meet and join matrices

12 citations · 19 across the 8 of their papers we have counts for

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Showing 2018Show all

2 papers · 1 filter

math.NT2018

Studying the inertias of LCM matrices and revisiting the Bourque-Ligh conjecture

Mika Mattila, Pentti Haukkanen, Jori Mäntysalo

Let $S = {x_{1}, x_{2}, \dots, x_{n}}$ be a finite set of distinct positive integers. Throughout this article we assume that the set $S$ is GCD closed. The LCM matrix $[S]$ of the set $S$ …

math.NT2018

Positive definite functions on semilattices

Vesa Kaarnioja, Pentti Haukkanen, Pauliina Ilmonen +1

We introduce a notion of positive definiteness for functions $f : P \to R$ defined on meet semilattices $(P, ⪯, \land)$ and prove several properties for these functions…