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The Set-Theoretic Multiverse

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A research paper by Joel David Hamkins describing the controversial idea that there may be multiple mathematical universes rather than one true mathematics.

philosophy mathematics set theory research paper
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Lex Fridman

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Lex Fridman mentioned ✓ High confidence
"One of your more controversial ideas in mathematics as laid out in the paper, The Set-Theoretic Multiverse, you describe that there may not be one true mathematics, but rather multiple mathematical universes."
From: Infinity, Paradoxes, Gödel Incompleteness & the Mathematical Multiverse | Lex Fridman Podcast #488 • ▶ 2:28:11 • Dec 2025

Attribution: Lex Fridman mentions Joel's paper as context for discussing his controversial multiverse view