Squared triangular number: Revision history

4 September 2025

• curprev 05:2205:22, 4 September 2025 Bubba73 talk contribs m 14,797 bytes +2 →History undo

27 August 2025

• curprev 22:5722:57, 27 August 2025 David Eppstein talk contribs 14,795 bytes −73 Undid revision 1308142548 by Cmglee (talk) we have enough *sourced* visual proofs of this that we do not need to add additional unsourced and illegible ones undo Tag: Undo
• curprev 18:5318:53, 27 August 2025 Cmglee talk contribs 14,868 bytes +73 →Proofs: Add another visual proof undo Tag: Reverted

22 June 2025

• curprev 23:2623:26, 22 June 2025 Ira Leviton talk contribs m 14,795 bytes 0 gmonon→gnomon - toolforge:typos undo Tag: Correct typos in one click [1.1]

14 May 2025

• curprev 05:1305:13, 14 May 2025 David Eppstein talk contribs 14,795 bytes +81 →References: isbn ok undo

16 February 2025

• curprev 19:2319:23, 16 February 2025 2a04:cec0:c00d:31bb:2494:e91:ffe3:b9c7 talk 14,714 bytes −22 →Numeric values; geometric and probabilistic interpretation: Cite the OEIS in a more explicite manner undo Tags: references removed Mobile edit Mobile web edit

6 January 2025

• curprev 07:0007:00, 6 January 2025 Citation bot talk contribs 14,736 bytes +37 Added work. | Use this bot. Report bugs. | Suggested by Dominic3203 | Category:Integer sequences | #UCB_Category 4/220 undo

2 January 2025

• curprev 06:1906:19, 2 January 2025 David Eppstein talk contribs 14,699 bytes +77 math doesn't work in captions so we have to resort to templates here undo
• curprev 06:1806:18, 2 January 2025 David Eppstein talk contribs 14,622 bytes +67 →History: same^same undo
• curprev 06:1706:17, 2 January 2025 David Eppstein talk contribs 14,555 bytes +19 →Numeric values; geometric and probabilistic interpretation: same^same undo
• curprev 06:1606:16, 2 January 2025 David Eppstein talk contribs 14,536 bytes +185 →Proofs: same^same undo
• curprev 06:1406:14, 2 January 2025 David Eppstein talk contribs 14,351 bytes +90 →Generalizations: redundancy^redundancy undo
• curprev 06:1306:13, 2 January 2025 David Eppstein talk contribs 14,261 bytes −143 Wow that is ugly. This is why we have proper math formatting. Convert to more of that. We need it for other parts and we should not be mixing styles in a single article. undo
• curprev 04:3304:33, 2 January 2025 Cedar101 talk contribs 14,404 bytes 0 →History: {{pars}} undo

8 November 2024

• curprev 07:5707:57, 8 November 2024 David Eppstein talk contribs 14,404 bytes +1 Undid revision 1256111689 by Shashvat Verma (talk) I think you should read MOS:POSS, and if you find other examples violating that then fix them rather than adding more violations undo Tag: Undo
• curprev 07:4607:46, 8 November 2024 Shashvat Verma talk contribs 14,403 bytes −1 Undid revision 1256027616 by David Eppstein (talk) I think you should see some articles related to Pythagoras, Diophantus, Appolonius,etc where there's a heavy use of just only ' without s undo Tags: Undo Reverted Mobile edit Mobile app edit Android app edit App undo

7 November 2024

• curprev 21:2321:23, 7 November 2024 David Eppstein talk contribs 14,404 bytes +1 Undid revision 1255961322 by Shashvat Verma (talk) Standard Wikipedia style is to use '-without-s only for plurals ending in s, not for singular names ending in s, with a very small number of exceptions undo Tags: Undo Reverted
• curprev 13:5713:57, 7 November 2024 Shashvat Verma talk contribs m 14,403 bytes −1 →top: slightly erroneous undo Tags: Reverted Mobile edit Mobile app edit Android app edit App section source

4 June 2024

• curprev 17:5617:56, 4 June 2024 David Eppstein talk contribs 14,404 bytes −1,707 Undid revision 1227255718 by Beneficii (talk) did you see the part where this style of proof was already described in this article as "uninformative"?? undo Tag: Undo
• curprev 17:3817:38, 4 June 2024 Beneficii talk contribs 16,111 bytes +1,707 Undid revision 1227253214 by David Eppstein (talk) undo Tags: Undo Reverted
• curprev 17:2017:20, 4 June 2024 David Eppstein talk contribs 14,404 bytes −1,707 Undo. Boring freshman-level exercise in formula manipulation. I'm sure this could be sourced, but why bother? undo Tags: Undo Reverted
• curprev 16:1716:17, 4 June 2024 Beneficii talk contribs m 16,111 bytes −1 →Proofs: fixing parentheses undo Tag: Reverted
• curprev 14:5914:59, 4 June 2024 Beneficii talk contribs 16,112 bytes +1,708 →Proofs: inductive proof undo Tag: Reverted

2 February 2024

• curprev 14:0814:08, 2 February 2024 Tarnoob talk contribs 14,404 bytes −39 →External links: cat. undo

12 January 2024

• curprev 00:1500:15, 12 January 2024 CalebSohSweeKai talk contribs 14,443 bytes +156 Explained visual proof. undo Tag: Visual edit

28 December 2023

• curprev 21:5521:55, 28 December 2023 86.145.56.89 talk 14,287 bytes −2 →History undo
• curprev 21:5521:55, 28 December 2023 86.145.56.89 talk 14,289 bytes +225 No edit summary undo

16 October 2023

• curprev 17:2517:25, 16 October 2023 David Eppstein talk contribs 14,064 bytes −12 Undid revision 1180382535 by Pass-word(p) (talk) pointless empty section undo Tag: Undo
• curprev 08:2108:21, 16 October 2023 Pass-word(p) talk contribs 14,076 bytes +12 No edit summary undo

5 June 2023

• curprev 20:5120:51, 5 June 2023 CodeTalker talk contribs 14,064 bytes +1 Reverted 1 edit by 2A02:2788:4C8:1F5:B056:2A50:89B9:6D8D (talk): MOS:POSS undo Tags: Twinkle Undo
• curprev 19:5919:59, 5 June 2023 2a02:2788:4c8:1f5:b056:2a50:89b9:6d8d talk 14,063 bytes −1 →top: Fixed grammar undo Tags: Reverted canned edit summary Mobile edit Mobile app edit Android app edit

17 May 2023

• curprev 01:2301:23, 17 May 2023 David Eppstein talk contribs 14,064 bytes −18 Undid revision 1155171117 by ^ctn98^ (talk) MOS:OVERLINK overload undo Tag: Undo
• curprev 00:5000:50, 17 May 2023 ^ctn98^ talk contribs 14,082 bytes +18 No edit summary undo Tag: Reverted

18 November 2022

• curprev 07:3907:39, 18 November 2022 Citation bot talk contribs 14,064 bytes +20 Add: s2cid. | Use this bot. Report bugs. | Suggested by Whoop whoop pull up | #UCB_webform 205/1636 undo

1 November 2022

• curprev 20:1320:13, 1 November 2022 Cmglee talk contribs 14,044 bytes +19 →Numeric values; geometric and probabilistic interpretation: Avoid confusing square brackets undo

21 October 2022

• curprev 21:0021:00, 21 October 2022 InternetArchiveBot talk contribs 14,025 bytes +139 Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.9.2) (Whoop whoop pull up - 11055 undo

22 July 2022

• curprev 09:4109:41, 22 July 2022 Cmglee talk contribs 13,886 bytes +50 →Numeric values; geometric and probabilistic interpretation: Link to square_pyramidal_number#Geometric_enumeration undo

7 April 2022

• curprev 16:1516:15, 7 April 2022 David Eppstein talk contribs m 13,836 bytes −271 Reverted edits by KlokkoVanDenBerg (talk) to last version by David Eppstein undo Tag: Rollback
• curprev 11:0511:05, 7 April 2022 KlokkoVanDenBerg talk contribs 14,107 bytes +271 No edit summary undo Tag: Reverted
• curprev 01:1001:10, 7 April 2022 David Eppstein talk contribs 13,836 bytes −95 Undid revision 1081339199 by KlokkoVanDenBerg (talk) source? undo Tag: Undo

6 April 2022

• curprev 21:1321:13, 6 April 2022 KlokkoVanDenBerg talk contribs 13,931 bytes +95 →Numeric values; geometric and probabilistic interpretation undo Tags: Reverted Mobile edit Mobile web edit

19 March 2022

• curprev 07:5007:50, 19 March 2022 Citation bot talk contribs 13,836 bytes +29 Alter: url. URLs might have been anonymized. Add: bibcode, issue. | Use this bot. Report bugs. | Suggested by Abductive | Category:Articles containing proofs | #UCB_Category 359/409 undo

29 January 2022

• curprev 06:5206:52, 29 January 2022 David Eppstein talk contribs 13,807 bytes +335 Undo removal of math formatting leaving formulas as plain text, not even with italic variables. Do not do that. undo Tag: Undo
• curprev 03:4203:42, 29 January 2022 2001:ee0:43be:adb0:413b:55e6:fd8:a26e talk 13,472 bytes −26 →Numeric values; geometric and probabilistic interpretation undo Tag: Reverted
• curprev 03:4103:41, 29 January 2022 2001:ee0:43be:adb0:413b:55e6:fd8:a26e talk 13,498 bytes −20 →Numeric values; geometric and probabilistic interpretation undo Tag: Reverted
• curprev 03:3903:39, 29 January 2022 2001:ee0:43be:adb0:413b:55e6:fd8:a26e talk 13,518 bytes 0 →Numeric values; geometric and probabilistic interpretation undo Tag: Reverted
• curprev 03:3603:36, 29 January 2022 2001:ee0:43be:adb0:413b:55e6:fd8:a26e talk 13,518 bytes −203 →Numeric values; geometric and probabilistic interpretation undo Tag: Reverted
• curprev 03:2703:27, 29 January 2022 2001:ee0:43be:adb0:413b:55e6:fd8:a26e talk 13,721 bytes −86 →Numeric values; geometric and probabilistic interpretation undo Tag: Reverted

10 September 2021

• curprev 18:4018:40, 10 September 2021 Beland talk contribs m 13,807 bytes +22 convert special characters (via WP:JWB) undo

26 August 2021

• curprev 08:4708:47, 26 August 2021 LaundryPizza03 talk contribs 13,785 bytes +33 added Category:Proof without words using HotCat undo