Haar: invariant measure on continuous groups

What changed

Established existence of nonzero translation-invariant measure for the groups under the paper's topological assumptions.

Scientific scope

The record is Haar's sole-author 1933 Annals of Mathematics paper. Its countability and topological hypotheses matter; later uniqueness results, Weil's general treatment and extensions beyond locally compact groups remain separate.

Evidence

The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The record is Haar's sole-author 1933 Annals of Mathematics paper. Its countability and topological hypotheses matter; later uniqueness results, Weil's general treatment and extensions beyond locally compact groups remain separate.

Contributors

• Alfréd Haar · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.

• JSTOR record for Haar invariant-measure paper
• CiNii record for Haar invariant-measure paper

Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.

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