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Characteristic subgroup: Revision history

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For any version listed below, click on its date to view it. For more help, see Help:Page history and Help:Edit summary. (cur) = difference from current version, (prev) = difference from preceding version, m = minor edit, → = section edit, ← = automatic edit summary

curprev 16:3116:31, 29 June 2022‎ Beland talk contribs‎ 9,793 bytes +81‎ MOS:BBB, drop unclear link, convert special characters found by Wikipedia:Typo Team/moss (via WP:JWB) undo

curprev 07:3307:33, 11 February 2022‎ Qwerfjkl (bot) talk contribs‎ m 9,712 bytes 0‎ Capitalising short description "subgroup mapped to itself under every automorphism of the parent group" per WP:SDFORMAT (via Bandersnatch) undo

curprev 16:5016:50, 24 June 2021‎ EureKB talk contribs‎ 9,712 bytes +27‎ Changed link undo Tag: Visual edit

curprev 23:2823:28, 3 June 2021‎ MinusBot talk contribs‎ m 9,685 bytes 0‎ →‎Definition: Proper minus signs and other cleanup. Report bugs, errors, and suggestions at User talk:MinusBot undo Tag: AWB

curprev 16:1516:15, 12 April 2021‎ 149.125.114.0 talk‎ 9,685 bytes +14‎ →‎Finite example undo

curprev 08:3208:32, 16 November 2020‎ Zundark talk contribs‎ 9,671 bytes +9‎ →‎Basic properties: this is a homomorphism undo
curprev 08:3008:30, 16 November 2020‎ Zundark talk contribs‎ 9,662 bytes +24‎ →‎Definition: half of the Definition section wasn't about the definition, so I've separated it off undo

curprev 23:2723:27, 15 November 2020‎ Ebony Jackson talk contribs‎ 9,638 bytes +138‎ →‎Definition: Mentioned an equivalent condition. The finiteness hypothesis in the statement about unique subgroup of a given index is unnecessary. undo

curprev 11:4911:49, 22 May 2020‎ 2a02:1205:5056:4830:e8c4:6205:3856:53f0 talk‎ 9,500 bytes 0‎ Modified punctuation for clarity. undo

curprev 04:3504:35, 24 April 2020‎ Magmalex talk contribs‎ m 9,500 bytes +55‎ →‎Definition: added definition in mathematical notation undo

curprev 19:4719:47, 2 January 2020‎ Deacon Vorbis talk contribs‎ 9,445 bytes −26‎ →‎top: shorten short desc undo

curprev 20:3620:36, 1 December 2019‎ 2001:861:3ac0:4fa0:c440:a6ce:4096:3f1b talk‎ 9,471 bytes +35‎ No edit summary undo

curprev 16:3316:33, 19 October 2019‎ Daviddwd talk contribs‎ 9,436 bytes +119‎ short description undo Tag: Visual edit

curprev 10:1310:13, 17 October 2019‎ 128.131.43.55 talk‎ 9,317 bytes +4‎ →‎Related concepts: Moved universal quantifiers front in 2.1 and 2. 3 undo

curprev 20:5020:50, 25 November 2018‎ DavidKVT talk contribs‎ m 9,313 bytes +19‎ →‎Strictly characteristic subgroup{{anchor|Strictly invariant subgroup}}: clarifying that finiteness and surjectivity *of endomorphisms* imply injectivity (consider f:A x B -> A by f((a,b)) = a. This is clearly surjective but not injective for non-trivial B). undo

curprev 17:5817:58, 7 February 2018‎ Havranwiki talk contribs‎ m 9,294 bytes 0‎ →‎Normal subgroup undo

curprev 13:0613:06, 3 January 2018‎ Colonies Chris talk contribs‎ 9,294 bytes −3‎ →‎Related concepts: consistent sing/pl undo

curprev 10:2610:26, 12 December 2016‎ ChristianTS talk contribs‎ m 9,297 bytes +1‎ →‎Definition: missing g undo

curprev 18:1818:18, 27 September 2016‎ Oboofyu talk contribs‎ 9,296 bytes −124‎ Tidied this up a little bit. Still needs to be improved! undo

curprev 22:2922:29, 13 June 2016‎ 178.16.7.96 talk‎ 9,071 bytes 0‎ →‎Fully invariant subgroups undo

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