Cobb-Douglas preferences are homothetic

the verdict

COMMON KNOWLEDGE

Legacy classification; evidence review pending

Recorded sources

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Is it true that Cobb-Douglas preferences are homothetic?

Cobb-Douglas utility functions are definitionally homothetic because they represent monotonic transformations of homogeneous functions of degree one, meaning marginal rates of substitution depend only on the ratio of consumption quantities rather than total income or utility.

Verdict: COMMON KNOWLEDGE · 0 sources for, 0 against · Last checked 4 Aug 2026

The analysis

The claim that Cobb-Douglas preferences are homothetic is a foundational, axiomatic mathematical property in microeconomics. It is trivially true by definition and standard consumer theory, requiring no empirical citation as it is a deductive mathematical fact.

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What does the evidence say?

Receipt History

first checked04 Aug 2026

judged → COMMON KNOWLEDGE · 9504 Aug 2026

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