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# Defining Infinity
- URL: https://www.cascadepbs.org/show/infinite-series/episode/defining-infinity-6oowbg/
- Published: 2024-04-02T22:52:11.000Z
- Updated: 2025-08-21T06:36:28.000Z
- Description: Set theory is the foundation of all of mathematics. How does it handle infinity?
- Author: Cascade PBS Staff
- Tags: Infinite Series, Season 2, Episode 17, #ZZZ_Episode_cbddc230-699b-4ff9-b0f0-386727314e16, #episode, #ZZZ_Show_0efdefa6-fb6f-44e5-96f1-baf9a8c090e2, #geo-us, #v1.16

Set theory is supposed to be a foundation of all of mathematics. How does it handle infinity?