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Topogenous orders on forms

  • Minani Iragi , David Holgate and Josef Šlapal EMAIL logo
Published/Copyright: February 25, 2025
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Abstract

Departing from a categorical concept of topogenous orders defined relative to the bifibration of subobjects, we introduce and discuss topogenous orders on forms, i.e., faithful and amnestic functors. These topogenous orders are shown to include both closure and interior operators on forms. We define and study two special morphisms relative to a topogenous order, namely strict and final morphisms. We give a characterization of the two morphisms by the help of their cartesian and cocartesian liftings. Some examples from topology and algebra demonstrating our results are included.

2020 Mathematics Subject Classification: Primary 54A05; 54B30; Secondary 18A05; 18D30

A support by Brno University of Technology is acknowledged, the first author was supported from the project MeMoV II no. CZ.02.2.69/0.0/0.0/18-053/0016962 and the third one from the Specific Research project no. FSI-S-23-8161.


  1. (Communicated by David Buhagiar)

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Received: 2024-08-01
Accepted: 2024-09-20
Published Online: 2025-02-25
Published in Print: 2025-02-25

© 2025 Mathematical Institute Slovak Academy of Sciences

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