Version history — Measure¶
Current edition: v3 · 2026-10-17 · prime abstraction
Editions¶
| Version | Date | Change | What changed |
|---|---|---|---|
| v3 | 2026-10-17 | The parent link to Aggregation was removed. The comparison with aggregation was rewritten: a measure is a countably additive size rule that applies even to a single element, while totals or averages computed with a measure are a separate aggregation step. | prose — concise body (prose edited), detailed body (prose edited) · structure — DAG parents (parent links changed) |
| v2 | 2026-09-28 | The footnote for Royden & Fitzpatrick, Real Analysis, 4th ed., Pearson 2010 now links to the Open Library record for that book; the old Pearson link opened an unrelated book. The text is otherwise unchanged. | prose — detailed body (prose edited) |
| v1 | 2026-08-24 | First published edition. | first published edition |
Editions are cut at publish time from a content hash of the entity's canonical source, so a version changes only when the content actually changed. Full canonical content for every edition, and the exact per-part diffs between them, are in the downloadable editions archive (editions_archive.jsonl); the current-state index is versions.jsonl.