Ivan Shishkin, Birch Grove

Singleton

Concept history

A revision trail for this concept page.

8 revisions

Revision 1887

8/21/2026, 1:24:34 PM · Ancient Tree

Updated linked exercises

linked exercisesProduit cartésien de singletonsProduit cartésien de singletons, Exemples de singletons

Revision 1885

8/21/2026, 1:19:29 PM · Sequoia

Concept re-reviewed after edits

review stateReview needed after an editUp to date

Revision 1884

8/21/2026, 1:19:25 PM · Sequoia

Updated text and review state

review stateUp to dateReview needed after an edit
Compare with revision 18832 changed lines
1Un singleton est un [[Set|ensemble]] contenant un seul élément.
2
3**Exemples:** Les ensembles $\{1\}, \{\text{Michael}\}$ ainsi que $\{2\pi\}$ sont des singletons mais $\{a, 28\}$ n'en est pas un.

Revision 1883

8/21/2026, 1:18:09 PM · Sequoia

Concept reviewed

statusUsableReviewed

Revision 1882

8/21/2026, 1:18:06 PM · Sequoia

Concept marked usable

statusStubUsable

Revision 1878

8/21/2026, 1:17:10 PM · Ancient Tree

Updated linked exercises

linked exercisesNoneProduit cartésien de singletons

Revision 1869

8/21/2026, 1:09:32 PM · Ancient Tree

Updated text

Compare with revision 17322 changed lines
1Un singleton est un [[Set|ensemble]] comportant un seul élément.
1Un singleton est un [[Set|ensemble]] contenant un seul élément.

Revision 1732

8/20/2026, 9:55:16 AM · Catalpa

Concept created

Un singleton est un [[Set|ensemble]] comportant un seul élément.