Nonagonal number: Revision history

2 May 2024

• curprev 18:5718:57, 2 May 2024 David Eppstein talk contribs 2,717 bytes −10 redundant undo

22 April 2024

• curprev 18:0318:03, 22 April 2024 CheeseyHead talk contribs 2,727 bytes +269 Links undo Tag: Visual edit
• curprev 17:4817:48, 22 April 2024 CheeseyHead talk contribs m 2,458 bytes −1 No edit summary undo Tag: Visual edit

29 March 2023

• curprev 07:2107:21, 29 March 2023 David Eppstein talk contribs 2,459 bytes −170 Undo WP:NOR undo Tag: Undo

26 March 2023

• curprev 21:2621:26, 26 March 2023 Grapeman4 talk contribs 2,629 bytes +42 →Nonagonal numbers: added digital root total undo Tag: Reverted

25 March 2023

• curprev 02:3702:37, 25 March 2023 Grapeman4 talk contribs 2,587 bytes +4 →Nonagonal numbers undo Tag: Reverted
• curprev 02:3502:35, 25 March 2023 Grapeman4 talk contribs 2,583 bytes +124 →Nonagonal numbers: added digital root pattern undo Tag: Reverted

21 October 2022

• curprev 20:5020:50, 21 October 2022 Citation bot talk contribs 2,459 bytes +4 Alter: isbn. Upgrade ISBN10 to 13. | Use this bot. Report bugs. | Suggested by Whoop whoop pull up | #UCB_webform 33/51 undo

28 September 2022

• curprev 19:0419:04, 28 September 2022 Supyovalk talk contribs 2,455 bytes +18 →Nonagonal numbers undo

23 December 2021

• curprev 23:3023:30, 23 December 2021 David Eppstein talk contribs 2,437 bytes +24 Elena Deza undo

24 November 2021

• curprev 04:5704:57, 24 November 2021 Brainpolice talk contribs 2,413 bytes −34 Removed "lead too long" tag. undo
• curprev 04:5404:54, 24 November 2021 Brainpolice talk contribs 2,447 bytes +7 →Relationship between nonagonal and triangular numbers: the formula for Tn is not (n+1)/2, it is n(n+1)/2. undo

12 June 2021

• curprev 18:0118:01, 12 June 2021 2601:646:300:7a60:c8db:6489:86cf:7fa5 talk 2,440 bytes −34 No citation needed; follows from definition by solving the quadratic (x/2)(7x-5) = n and taking the positive root undo

17 May 2021

• curprev 07:0407:04, 17 May 2021 Turbojet talk contribs 2,474 bytes −4 →Relationship between nonagonal and triangular numbers: the previous relationship was false undo

26 March 2021

• curprev 05:5505:55, 26 March 2021 Avoandtoast talk contribs 2,478 bytes +23 Shortened the lead section without taking out major information undo Tag: Visual edit

19 January 2021

• curprev 06:4706:47, 19 January 2021 Monkbot talk contribs m 2,455 bytes +1 Task 18 (cosmetic): eval 2 templates: hyphenate params (1×); undo Tag: AWB

24 December 2020

• curprev 20:5620:56, 24 December 2020 WikiCleanerBot talk contribs m 2,454 bytes 0 v2.04b - Bot T20 CW#61 - Fix errors for CW project (Reference before punctuation) undo Tag: WPCleaner

4 July 2020

• curprev 01:4601:46, 4 July 2020 AnomieBOT talk contribs m 2,454 bytes +30 Dating maintenance tags: {{Citation needed}} {{Lead too long}} undo

3 July 2020

• curprev 23:4623:46, 3 July 2020 Brainpolice talk contribs 2,424 bytes +39 Added {{Lead too long}} and {{Citation needed}} undo
• curprev 23:4023:40, 3 July 2020 Brainpolice talk contribs 2,385 bytes +202 Added derivation of relationship 7N(n) + 3 = T(7n-3) (in lieu of a citation, which I could not find.) undo
• curprev 23:1423:14, 3 July 2020 Brainpolice talk contribs 2,183 bytes +173 Added citation to first formula. undo
• curprev 20:2520:25, 3 July 2020 Brainpolice talk contribs 2,010 bytes +151 Added citation containing definition of nonagonal number. Removed "citation needed" flag. undo

25 January 2020

• curprev 02:0402:04, 25 January 2020 RMCD bot talk contribs 1,859 bytes −123 Removing notice of move discussion undo

23 January 2020

• curprev 18:1518:15, 23 January 2020 Foghe talk contribs 1,982 bytes −1 →See also undo

14 January 2020

• curprev 22:4522:45, 14 January 2020 RMCD bot talk contribs 1,983 bytes +123 Notifying of move discussion on Talk:Nonagon undo
• curprev 18:5118:51, 14 January 2020 GTrang talk contribs m 1,860 bytes 0 GeoffreyT2000 moved page Enneagonal number to Nonagonal number over redirect: The talk page comments from 2004 show that the move I am reverting is controversial, and needs a new RM. undo
• curprev 18:3618:36, 14 January 2020 GTrang talk contribs 1,860 bytes +22 Showing the name "nonagonal number" first. undo
• curprev 03:1403:14, 14 January 2020 Sumanuil talk contribs 1,838 bytes +21 No edit summary undo
• curprev 03:1103:11, 14 January 2020 Sumanuil talk contribs 1,817 bytes −15 Reverted to revision 928682231 by Arlene Foster (talk): As 'enneagon' and 'nonagon' are synonyms, there's no real reason for these changes. (TW) undo Tag: Undo
• curprev 03:0203:02, 14 January 2020 Jiho Ha talk contribs 1,832 bytes +1 No edit summary undo
• curprev 03:0103:01, 14 January 2020 Jiho Ha talk contribs 1,831 bytes +14 No edit summary undo
• curprev 03:0003:00, 14 January 2020 Jiho Ha talk contribs m 1,817 bytes 0 Jiho Ha moved page Nonagonal number to Enneagonal number over redirect undo

30 November 2019

• curprev 23:5023:50, 30 November 2019 Arlene Foster talk contribs 1,817 bytes +22 →See also undo

30 July 2017

• curprev 08:0608:06, 30 July 2017 Lambiam talk contribs 1,795 bytes +105 →See also: *Centered nonagonal number undo

6 February 2015

• curprev 05:4105:41, 6 February 2015 David Eppstein talk contribs 1,690 bytes +422 Clarify what the pattern means, but this is too pointless a concept for me to be interested in taking the time to draw an illustration. undo

27 January 2015

• curprev 15:1815:18, 27 January 2015 Loraof talk contribs 1,268 bytes +44 →top: clarification needed undo

20 March 2014

• curprev 07:2407:24, 20 March 2014 89.72.176.130 talk 1,224 bytes +5 →Test for nonagonal numbers undo
• curprev 07:1907:19, 20 March 2014 89.72.176.130 talk 1,219 bytes +176 No edit summary undo

30 May 2013

• curprev 18:3018:30, 30 May 2013 Toshio Yamaguchi talk contribs 1,043 bytes +31 adding natural number classes navbox undo

27 February 2013

• curprev 04:5004:50, 27 February 2013 Addbot talk contribs m 1,012 bytes −156 Bot: Migrating 6 interwiki links, now provided by Wikidata on d:q2702442 (Report Errors) undo

16 December 2012

• curprev 03:0803:08, 16 December 2012 Davidmj101 talk contribs 1,168 bytes 0 No edit summary undo

1 December 2012

• curprev 14:3414:34, 1 December 2012 Yobot talk contribs m 1,168 bytes +2 clean up /fixed checkwiki error 18 using AWB (8717) undo

29 August 2012

• curprev 05:3805:38, 29 August 2012 David Eppstein talk contribs 1,166 bytes +32 not unreferenced (OEIS is a ref) but not well referenced either undo

9 May 2012

• curprev 12:1112:11, 9 May 2012 ZéroBot talk contribs m 1,134 bytes +25 r2.7.1) (Robot: Adding it:Numero ennagonale undo

26 December 2011

• curprev 16:2416:24, 26 December 2011 Luckas-bot talk contribs m 1,109 bytes +33 r2.7.1) (Robot: Adding ta:நவகோண எண் undo

11 January 2011

• curprev 10:4010:40, 11 January 2011 Luckas-bot talk contribs m 1,076 bytes +20 r2.7.1) (robot Adding: zh:九邊形數 undo

21 February 2010

• curprev 05:5305:53, 21 February 2010 24.155.70.89 talk 1,056 bytes +17 No edit summary undo

25 August 2009

• curprev 11:3711:37, 25 August 2009 Thinking of England talk contribs 1,039 bytes +21 Disambiguated wikilink parity to parity (mathematics) undo

17 March 2009

• curprev 03:3103:31, 17 March 2009 24.17.191.208 talk 1,018 bytes +1 No edit summary undo

6 August 2008

• curprev 20:0020:00, 6 August 2008 Riad.Bot~enwiki talk contribs m 1,017 bytes +23 robot Adding: ar:عدد متسع undo