Universal enveloping algebra: Revision history

9 February 2025

• curprev 11:1111:11, 9 February 2025 2a01:e0a:2aa:1cf0:2d77:ee2a:560b:4364 talk 51,791 bytes 0 Corrected a typo undo Tags: Visual edit Mobile edit Mobile web edit
• curprev 06:3106:31, 9 February 2025 12AbBa talk contribs 51,791 bytes +26 →Formal definition undo
• curprev 06:2706:27, 9 February 2025 12AbBa talk contribs 51,765 bytes −1,489 →Formal definition: Removed some wrong/misleading/redundant statements. Also I don't know why short exact sequences are mentioned at the end. They do not aid the understanding at all... undo

30 October 2024

• curprev 03:2503:25, 30 October 2024 Myasuda talk contribs m 53,254 bytes +2 →Casimir operators: sp undo

16 September 2024

• curprev 05:4105:41, 16 September 2024 SFeesh talk contribs m 53,252 bytes −9 Redundant word undo Tags: Visual edit Mobile edit Mobile web edit

31 August 2024

• curprev 15:3015:30, 31 August 2024 Eepy21 talk contribs m 53,261 bytes 0 capitalise to make notation consistent undo
• curprev 15:2815:28, 31 August 2024 Eepy21 talk contribs m 53,261 bytes 0 Changed g to e undo
• curprev 13:5913:59, 31 August 2024 Eepy21 talk contribs m 53,261 bytes 0 Changed X,Y to E,F again undo
• curprev 13:5613:56, 31 August 2024 Eepy21 talk contribs m 53,261 bytes −3 Changed the X, Y and x,y in the sl2 example to E,F and e,f, respectively. This is to be more consistent with common notation. undo

19 August 2024

• curprev 21:2721:27, 19 August 2024 MichaelMaggs talk contribs 53,264 bytes +45 Adding local short description: "Concept in mathematics", overriding Wikidata description "Hopf algebra associated to a Lie algebra" undo Tag: Shortdesc helper

11 July 2024

• curprev 03:5603:56, 11 July 2024 24.56.238.67 talk 53,219 bytes +2 →Using basis elements undo

21 May 2024

• curprev 11:4611:46, 21 May 2024 Ancheta Wis talk contribs 53,217 bytes +44 →Generators and relations: +link that is internal to this article undo

8 May 2024

• curprev 07:5207:52, 8 May 2024 140.203.12.7 talk 53,173 bytes −7 →Casimir operators undo

23 December 2023

• curprev 06:4406:44, 23 December 2023 Citation bot talk contribs 53,180 bytes +20 Add: s2cid. | Use this bot. Report bugs. | Suggested by Abductive | Category:Hopf algebras | #UCB_Category 33/36 undo

21 November 2023

• curprev 04:4404:44, 21 November 2023 99.47.116.190 talk 53,160 bytes +36 Add link to invariant differential operators undo

11 November 2023

• curprev 00:2100:21, 11 November 2023 Robinh talk contribs m 53,124 bytes +15 →Universal property: \colon not : undo

26 October 2023

• curprev 03:1203:12, 26 October 2023 Citation bot talk contribs 53,109 bytes −63 Add: s2cid. Removed proxy/dead URL that duplicated identifier. | Use this bot. Report bugs. | #UCB_CommandLine undo

16 June 2023

• curprev 03:3303:33, 16 June 2023 76.125.192.226 talk 53,172 bytes −1 Fixed typo undo Tags: canned edit summary Mobile edit Mobile app edit iOS app edit

1 May 2023

• curprev 01:5401:54, 1 May 2023 Thorbor262 talk contribs m 53,173 bytes −5 →Example: Rotation group SO(3): The characteristic polynomial was wrong. undo Tag: Visual edit

25 January 2023

• curprev 21:4521:45, 25 January 2023 Zephyr the west wind talk contribs 53,178 bytes +40 →Casimir operators: link to H-C isomorphism which has much more complete description of centre undo

25 October 2022

• curprev 18:2818:28, 25 October 2022 2a01:598:9285:e311:a423:e963:2620:e764 talk 53,138 bytes 0 →Examples in particular cases: Fixed Typo undo Tags: Mobile edit Mobile web edit
• curprev 18:2618:26, 25 October 2022 2a01:598:9285:e311:a423:e963:2620:e764 talk 53,138 bytes −1 →Examples in particular cases: Fixed typo undo Tags: Mobile edit Mobile web edit

19 July 2022

• curprev 16:4116:41, 19 July 2022 193.52.245.13 talk 53,139 bytes −15 →Casimir operators: In fact my first motivation to correct the sentence is the grammar error + a wish to avoid any useless fancy english words (as this is mathematics for probably mostly non native speakers). But in fact, I don't know what the previous author really wanted to say. In particular, is \delta also a vector field? undo Tag: Visual edit

9 July 2022

• curprev 12:1912:19, 9 July 2022 Cyfal talk contribs 53,154 bytes −2 spelling (WP:Typo Team) undo

10 January 2022

• curprev 19:4219:42, 10 January 2022 John Baez talk contribs 53,156 bytes −2 No edit summary undo
• curprev 19:1019:10, 10 January 2022 John Baez talk contribs 53,158 bytes +67 clarified first sentence - see talk page undo

12 November 2021

• curprev 09:3809:38, 12 November 2021 84.107.157.232 talk 53,091 bytes −5 Double word deletion undo

23 June 2021

• curprev 22:2022:20, 23 June 2021 SdkbBot talk contribs m 53,096 bytes +7 General fixes, removed erroneous space undo Tag: AWB

30 December 2020

• curprev 01:0901:09, 30 December 2020 71.244.147.121 talk 53,089 bytes +24 No edit summary undo
• curprev 01:0801:08, 30 December 2020 71.244.147.121 talk 53,065 bytes −2 No edit summary undo
• curprev 01:0601:06, 30 December 2020 71.244.147.121 talk 53,067 bytes +3 Something fishy is going on in this article, all the subtraction signs are being consumed. undo
• curprev 01:0501:05, 30 December 2020 71.244.147.121 talk 53,064 bytes −1 No edit summary undo
• curprev 01:0401:04, 30 December 2020 71.244.147.121 talk 53,065 bytes −5 No edit summary undo
• curprev 01:0401:04, 30 December 2020 71.244.147.121 talk 53,070 bytes +2 No edit summary undo
• curprev 01:0301:03, 30 December 2020 71.244.147.121 talk 53,068 bytes −3 No edit summary undo
• curprev 01:0301:03, 30 December 2020 71.244.147.121 talk 53,071 bytes +4 No edit summary undo
• curprev 01:0301:03, 30 December 2020 71.244.147.121 talk 53,067 bytes +1 No edit summary undo
• curprev 01:0301:03, 30 December 2020 71.244.147.121 talk 53,066 bytes −1 No edit summary undo
• curprev 01:0201:02, 30 December 2020 71.244.147.121 talk 53,067 bytes +5 No edit summary undo

8 December 2020

• curprev 20:1020:10, 8 December 2020 Mathphysman talk contribs 53,062 bytes −3,682 →Universal property: I confess to being biased against category theory, but I personally do not see how the "categories and functors" description of the universal property will be helpful to most readers. I am removing it. undo
• curprev 19:5519:55, 8 December 2020 Mathphysman talk contribs m 56,744 bytes +47 →Formalities undo
• curprev 19:5319:53, 8 December 2020 Mathphysman talk contribs m 56,697 bytes +19 →Generators and relations undo
• curprev 19:5119:51, 8 December 2020 Mathphysman talk contribs 56,678 bytes −1,243 →Informal construction: Condensed the treatment slightly and removed the discussion of the free algebra in favor of going directly to "generators and relations" undo

6 December 2020

• curprev 22:3222:32, 6 December 2020 Monkbot talk contribs m 57,921 bytes −31 Task 18 (cosmetic): eval 7 templates: del empty params (4×); hyphenate params (3×); undo Tag: AWB

4 December 2020

• curprev 18:1718:17, 4 December 2020 The Banner talk contribs m 57,952 bytes +64 v2.04 - Repaired 1 link to disambiguation page - (You can help) - Quotient space undo Tag: WPCleaner

3 December 2020

• curprev 05:2305:23, 3 December 2020 73.93.144.86 talk 57,888 bytes −6 The bracket operation on a lie algebra is a *specific* bilinear map satisfying these properties not *any* map. undo Tags: Visual edit Mobile edit Mobile web edit

17 November 2020

• curprev 16:4716:47, 17 November 2020 65.132.0.175 talk 57,894 bytes +10 →Casimir operators undo
• curprev 16:2716:27, 17 November 2020 65.132.0.175 talk 57,884 bytes +5 →Informal construction undo

31 October 2020

• curprev 23:0823:08, 31 October 2020 LilHelpa talk contribs m 57,879 bytes −1 →Superalgebras and other generalizations: it's → its undo

18 October 2020

• curprev 04:4504:45, 18 October 2020 67.198.37.16 talk 57,880 bytes +47 →Free associative algebra: clarify/motivate undo