2 papers
math-ph2025
Compactification of quasi-local algebras on the lattice
Jun Ikeda
We introduce a compactification construction for abstract quasi-local C*-algebras over countable metric spaces equipped with an isometric group action which is functorial with resp…
math.CO2025
Improving cardinality estimation of sums of sets with convexity
Jun Ikeda
This paper presents a slight improvement of the estimate of sumsets of convex sets with negative discrete third derivative. The proposed method is based on some previous works in i…