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Axiom of Choice: Computational Substance and Constructive Proofs Explored

This post explores the computational substance of the axiom of choice, aiming to explain its intuition in elementary terms using realizability semantics. It contrasts constructive and classical viewpoints, illustrating the axiom's utility with a proof that rational numbers can be represented by numerator and denominator functions. The author notes this proof is nonconstructive, as the axiom of choice doesn't specify how the numerator is chosen, unlike a constructive method using lowest terms. AI

IMPACT Explores foundational mathematical concepts relevant to computability and logic, which underpin AI development.

RANK_REASON The item is a blog post discussing a mathematical concept, not a primary research release or significant industry event.

Read on LessWrong (AI tag) →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Axiom of Choice: Computational Substance and Constructive Proofs Explored

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The item is a blog post discussing a mathematical concept, not a primary research release or significant industry event.
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  1. LessWrong (AI tag) TIER_1 English(EN) · tailcalled ·

    What is the computational substance of the axiom of choice?

    <p><i><span>This post is also available on </span></i><a href="https://tailcalled.substack.com/p/what-is-the-computational-substance" rel="noreferrer"><i><span>my Substack</span></i></a><i><span>.</span></i></p><p><span>I feel like online discussions of the axiom of choice either…