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Theorem

Weller's Theorem

Game Theory

Weller's theorem, proved by Dietrich Weller in 1985, is a result in economics showing that a heterogeneous divisible resource can always be divided among partners with differing valuations in a way that is simultaneously Pareto efficient and envy free. The theorem further shows that such an allocation can be supported by a system of prices making it a competitive equilibrium with equal incomes, linking the fair cake-cutting literature to general equilibrium theory.

Facts
Statement
A heterogeneous resource can be divided among n partners with different valuations in a way that is both Pareto-efficient and envy-free. 1
Classification
Statement Form
Existence Theorem 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. Weller's theorem - Wikipedia
Introduction, paragraph 1, sentence 2
Quote, Introduction, paragraph 1, sentence 2
a heterogeneous resource ("cake") can be divided among n partners with different valuations in a way that is both Pareto-efficient (PE) and envy-free (EF).
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