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Theorem

Richardson's Theorem

Logic and Foundations

In mathematics, Richardson's theorem establishes the undecidability of the equality of real numbers defined by expressions involving integers, pi, the natural logarithm base, and exponential and sine functions. It was proved in 1968 by mathematician and computer scientist Daniel Richardson of the University of Bath. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/

Facts
Classification
Statement Form
Impossibility Theorem 1
Proof Year
1968 1
Connections

Has Statement Form

Entity-backed identity for the statement-form enum value this theorem already carries, resolved to a mathematics concept by an explicit value-to-entity map (phase 3 bucket conversion, docs\design_entity_backed_browse_buckets_20260928.md). The statement-form fact itself stays on the theorem unchanged.

Sources
1. Richardson's theorem (Wikipedia)
Lead paragraph
Quote, Lead paragraph
It was proved in 1968 by the mathematician and computer scientist Daniel Richardson
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