Observed arrival · 2026-10-14
Pointfree Topology: The Opens Were Doing the Work
A guide to frames, locales, and the mathematicians behind topology without points, with a centennial conference for Bernhard Banaschewski on the calendar.
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- Readers of topology, frames, and locale theory
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- The page says Tychonoff’s theorem no longer requires the axiom of choice in the pointfree setting.
Field notes
The Ideas section defines a frame as a complete lattice in which finite meets distribute over arbitrary joins, then distinguishes the geometric term “locale.” Its profile traces Banaschewski’s career at McMaster and says he published more than 200 papers. Six navigation rooms also point to related figures, conferences, retypeset papers, and ways to contribute.
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