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Bibliographic Details
Main Authors: Alroily, Ibtsam A. R., Chaourar, Brahim
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2511.17263
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Table of Contents:
  • Let $n$ be a nonnegative integer, and $f(n)$ the number of unlabeled finite topologies on $n$ points. We prove that $f(n+m) \geq f(n) f(m)$ both for the labeled and unlabeled cases. Moreover, we prove a similar inequality for labeled and unlabeled $T_0$ topologies.