Clopen set: Revision history

2 October 2024

• curprev 06:3706:37, 2 October 2024 Harkrang talk contribs m 5,325 bytes −1 No edit summary undo Tag: Visual edit

2 August 2024

• curprev 16:3416:34, 2 August 2024 Pppery talk contribs 5,326 bytes −32 →See also: Already linked in body undo

30 January 2024

• curprev 11:2411:24, 30 January 2024 D.Lazard talk contribs 5,358 bytes −36 Reverted 1 edit by 73.114.11.76 (talk): No need of such a complicated formulation of the same assertion undo Tags: Twinkle Undo
• curprev 01:3001:30, 30 January 2024 73.114.11.76 talk 5,394 bytes +36 As stated, this was incorrect. A topology need not be discrete to have all clopen sets. It must be a partition topology (i.e. a topology whose base is a partition of the underlying set). A partition topology is homeomorphic to a discrete topology which means it is homeomorphic to a discrete topology whose underlying set are the partition classes. To say it is a discrete topology is misleading because that implies it is discrete on the underlying set, rather than some other set. undo Tag: Reverted

24 January 2024

• curprev 09:1209:12, 24 January 2024 D.Lazard talk contribs 5,358 bytes 0 Reverted 1 edit by 2620:15C:B5:200:B1C0:6104:FE2F:99DE (talk): Unexplained change undo Tags: Twinkle Undo

23 January 2024

• curprev 21:5321:53, 23 January 2024 2620:15c:b5:200:b1c0:6104:fe2f:99de talk 5,358 bytes 0 No edit summary undo Tag: Reverted

17 November 2023

• curprev 20:4920:49, 17 November 2023 67.198.37.16 talk 5,358 bytes −258 Remove image. It appears to be OR. See talk page. undo

12 March 2023

• curprev 21:2921:29, 12 March 2023 Vstephen B talk contribs m 5,616 bytes +49 No edit summary undo

7 September 2022

• curprev 10:3210:32, 7 September 2022 D.Lazard talk contribs 5,567 bytes −19 Undid revision 1108994916 by Nnescio (talk) a link is better than a notation undo
• curprev 10:1110:11, 7 September 2022 Nnescio talk contribs m 5,586 bytes +30 →Properties: laTeX symbol for empty set undo Tag: Visual edit

19 August 2022

• curprev 00:0600:06, 19 August 2022 Mgkrupa talk contribs 5,556 bytes +56 →See also undo

20 April 2022

• curprev 19:0219:02, 20 April 2022 FrescoBot talk contribs m 5,500 bytes +1 Bot: link syntax undo

14 November 2021

• curprev 09:3809:38, 14 November 2021 JCSantos talk contribs 5,499 bytes +47 →Examples: Better explanation of the fact that, in a discrete space, any set is clopen. undo

10 July 2021

• curprev 19:4619:46, 10 July 2021 Qwerfjkl talk contribs m 5,452 bytes −1 Removed 'a(n)' from the beginning of the short description per WP:SDFORMAT, from a request at Wikipedia:Reward board. (via WP:JWB) undo

9 July 2021

• curprev 17:5817:58, 9 July 2021 Mgkrupa talk contribs m 5,453 bytes +1 Fix undo
• curprev 17:5717:57, 9 July 2021 Mgkrupa talk contribs 5,452 bytes +100 Added information undo
• curprev 06:3106:31, 9 July 2021 Mgkrupa talk contribs 5,352 bytes +49 Added == See also == section undo
• curprev 05:0105:01, 9 July 2021 Mgkrupa talk contribs m 5,303 bytes 0 Fixed citation undo
• curprev 05:0005:00, 9 July 2021 Mgkrupa talk contribs m 5,303 bytes +190 Clarified and added commentary undo
• curprev 04:2904:29, 9 July 2021 Mgkrupa talk contribs m 5,113 bytes 0 Fix undo
• curprev 04:2904:29, 9 July 2021 Mgkrupa talk contribs 5,113 bytes +581 Copy editing to make this article more compliant with MOS:MATH and Wikipedia:Manual of Style/Accessibility. Added reference and a quote from Munkres' "Topology" undo

28 May 2021

• curprev 07:1107:11, 28 May 2021 D.Lazard talk contribs 4,532 bytes +4 Reverted 2 edits by 71.139.124.132 (talk) undo Tags: Twinkle Undo

27 May 2021

• curprev 21:2621:26, 27 May 2021 71.139.124.132 talk 4,528 bytes −2 No edit summary undo Tag: Reverted
• curprev 21:2521:25, 27 May 2021 71.139.124.132 talk 4,530 bytes −2 no good portmanteaux undo Tag: Reverted

22 March 2021

• curprev 16:0216:02, 22 March 2021 Belbury talk contribs 4,532 bytes +6 move image below disambiguation undo

13 January 2021

• curprev 20:3620:36, 13 January 2021 Monkbot talk contribs m 4,526 bytes +5 Task 18 (cosmetic): eval 4 templates: hyphenate params (5×); undo Tag: AWB

11 April 2020

• curprev 07:3407:34, 11 April 2020 D.Lazard talk contribs 4,521 bytes +58 Adding local short description: "Subset that is both open and closed", overriding Wikidata description "subset of a topological space which is both open and closed" (Shortdesc helper) undo

12 February 2020

• curprev 20:3420:34, 12 February 2020 Reyk talk contribs 4,463 bytes −15 reduce verbosity per Wikipedia:Manual_of_Style/Words_to_watch#Editorializing and MOS:NOTE undo

10 September 2019

• curprev 08:1708:17, 10 September 2019 Tea2min talk contribs m 4,478 bytes +3 →Examples: Use spaced en dash instead of spaced double hyphen-minus. undo

9 September 2019

• curprev 17:4817:48, 9 September 2019 176.59.1.197 talk 4,475 bytes +2 →Examples undo

21 February 2019

• curprev 16:3416:34, 21 February 2019 Oeoi talk contribs m 4,473 bytes +380 added example undo Tag: 2017 wikitext editor

14 November 2016

• curprev 03:1603:16, 14 November 2016 78.104.180.186 talk 4,093 bytes −3 change back because I was wrong undo
• curprev 03:0603:06, 14 November 2016 78.104.180.186 talk 4,096 bytes +3 change word from "if" to "then" because it was logically incorrect undo

6 October 2016

• curprev 21:0921:09, 6 October 2016 2620:0:e50:1400:c4b9:b09b:6ecb:819c talk 4,093 bytes 0 No edit summary undo

14 June 2016

• curprev 12:5512:55, 14 June 2016 Tea2min talk contribs 4,093 bytes +34 →top: Not to be confused with Half-open interval. undo

14 May 2016

• curprev 20:2420:24, 14 May 2016 Bender235 talk contribs m 4,059 bytes +1 clean up; http->https (see this RfC) using AWB undo

4 February 2016

• curprev 20:0520:05, 4 February 2016 Paul August talk contribs 4,058 bytes +6 Fix name undo
• curprev 19:5519:55, 4 February 2016 130.58.102.156 talk 4,052 bytes −13 clarity undo

31 January 2016

• curprev 19:5819:58, 31 January 2016 BD2412 talk contribs m 4,065 bytes −15 Fixing links to disambiguation pages, replaced: graph{{dn|date=January 2016}} → graph using AWB undo
• curprev 14:3614:36, 31 January 2016 BD2412 talk contribs m 4,080 bytes +24 Graph (mathematics) is now a disambiguation link; please fix., replaced: graph → graph{{dn|{{subst:DATE}}}} using AWB undo

3 May 2015

• curprev 19:5519:55, 3 May 2015 Jason Quinn talk contribs 4,056 bytes +16 source cleanup undo

3 April 2015

• curprev 11:3011:30, 3 April 2015 Jason Quinn talk contribs m 4,040 bytes +4 →Properties: minor formatting tweak undo
• curprev 11:2911:29, 3 April 2015 Jason Quinn talk contribs 4,036 bytes +313 →Properties: not the best ref but a ref is better than none undo

13 September 2014

• curprev 11:0811:08, 13 September 2014 Brirush talk contribs m 3,723 bytes +10 No edit summary undo

12 September 2014

• curprev 18:2318:23, 12 September 2014 Brirush talk contribs 3,713 bytes +230 Added image undo

3 August 2014

• curprev 15:2915:29, 3 August 2014 Hongooi talk contribs m 3,483 bytes −38 Not controversial undo

5 March 2014

• curprev 19:4819:48, 5 March 2014 Jason Quinn talk contribs 3,521 bytes +30 +authorlink for Robert G. Bartle undo
• curprev 19:4619:46, 5 March 2014 Jason Quinn talk contribs m 3,491 bytes +15 fixed deprecated "coauthors" parameter in cite templates undo

29 January 2014

• curprev 08:4008:40, 29 January 2014 KnightMove talk contribs 3,476 bytes −4 not only the first set, both are clopen undo

11 September 2013

• curprev 04:0904:09, 11 September 2013 OlEnglish talk contribs 3,480 bytes +138 →References: +archiveurl undo