Hadamard matrix: Revision history

18 May 2025

• curprev 20:3320:33, 18 May 2025 Beland talk contribs m 26,254 bytes −24 custom spacing in math formulas (via WP:JWB) undo Tag: JWB

12 May 2025

• curprev 17:2417:24, 12 May 2025 Betrema talk contribs 26,278 bytes −4 "demonstrates" is ambiguous, I replace it by "explains" undo

14 April 2025

• curprev 21:0421:04, 14 April 2025 JJMC89 bot III talk contribs m 26,282 bytes +14 Moving Category:Matrices to Category:Matrices (mathematics) per Wikipedia:Categories for discussion/Speedy undo

30 March 2025

• curprev 23:2823:28, 30 March 2025 Fgnievinski talk contribs 26,268 bytes +68 →Properties undo Tags: Mobile edit Mobile app edit Android app edit App section source
• curprev 20:0320:03, 30 March 2025 Will Orrick talk contribs 26,200 bytes −26 "See also" not to be used at the top of a page. undo
• curprev 20:0020:00, 30 March 2025 Will Orrick talk contribs 26,226 bytes −39 Undid revision 1283141500 by Fgnievinski (talk) Walsh matrices are mentioned already in the article. Also, I don't think it is common to think of Hadamard matrices as a generalization of Walsh matrices, especially since, historically, Hadamard matrices came first. undo Tag: Undo
• curprev 17:4717:47, 30 March 2025 Fgnievinski talk contribs 26,265 bytes +39 WP:RELATED undo Tag: Reverted

18 March 2025

• curprev 18:0118:01, 18 March 2025 Will Orrick talk contribs 26,226 bytes +208 →Alternative construction: replace \mapsto with \rightarrow and \oplus with + in the description of the homomorphism and replace = with \mapsto in formula giving the image of the Hadamard matrix; elaborate on what the additive group is; explain that arithmetic involving the matrix F_n is done in a finite field and restore previous definition of this matrix, which was correct. undo

8 March 2025

• curprev 20:3020:30, 8 March 2025 2601:447:cd80:e200:c006:91ee:170a:93b0 talk 26,018 bytes +1 No edit summary undo

2 January 2025

• curprev 11:4411:44, 2 January 2025 Jirka Fiala talk contribs 26,017 bytes +266 Transferred an image from the page Walsh matrix, adjusted notation of F_n. Proof made non-collapsed as recommended. undo

1 January 2025

• curprev 07:1207:12, 1 January 2025 70.104.135.54 talk 25,751 bytes −1 →Alternative construction: Fixed malformed math input undo
• curprev 07:1107:11, 1 January 2025 70.104.135.54 talk 25,752 bytes 0 →Alternative construction: Made brackets match undo

27 May 2024

• curprev 00:1500:15, 27 May 2024 David Eppstein talk contribs 25,752 bytes −5 →Hadamard conjecture: reword stale statement to avoid implication that it is still current (it might be, but we should not say so without a more recent source) undo

25 May 2024

• curprev 13:1413:14, 25 May 2024 Feataaron talk contribs m 25,757 bytes +6 →Alternative construction: Use more standard and less confusing notation for the groups undo

24 May 2024

• curprev 18:4518:45, 24 May 2024 Dimpase talk contribs m 25,751 bytes −35 →External links undo

19 April 2024

• curprev 15:4215:42, 19 April 2024 ERAGON talk contribs m 25,786 bytes −12 →Hadamard conjecture undo

19 February 2024

• curprev 03:5803:58, 19 February 2024 OAbot talk contribs m 25,798 bytes +16 Open access bot: doi updated in citation with #oabot. undo

4 January 2024

• curprev 11:5811:58, 4 January 2024 OAbot talk contribs m 25,782 bytes +34 Open access bot: hdl updated in citation with #oabot. undo

13 December 2023

• curprev 19:0519:05, 13 December 2023 Jayy V talk contribs m 25,748 bytes +246 No edit summary undo

30 November 2023

• curprev 21:4721:47, 30 November 2023 Teacher1850 talk contribs 25,502 bytes +13 minor copy edit undo Tag: Visual edit

8 November 2023

• curprev 12:0912:09, 8 November 2023 Kku talk contribs m 25,489 bytes +4 link [cC]omplex number undo

20 October 2023

• curprev 21:0721:07, 20 October 2023 ERAGON talk contribs 25,485 bytes −6 No edit summary undo
• curprev 21:0521:05, 20 October 2023 ERAGON talk contribs 25,491 bytes +42 No edit summary undo
• curprev 14:4914:49, 20 October 2023 ERAGON talk contribs 25,449 bytes +14 No edit summary undo
• curprev 14:4514:45, 20 October 2023 ERAGON talk contribs 25,435 bytes +137 No edit summary undo

9 September 2023

• curprev 11:5711:57, 9 September 2023 WikiCleanerBot talk contribs m 25,298 bytes −28 v2.05b - Bot T5 CW#90 - Fix errors for CW project (Internal link written as an external link) undo Tag: WPCleaner

6 September 2023

• curprev 12:0012:00, 6 September 2023 Adhandapani talk contribs m 25,326 bytes +154 →External links undo

30 July 2023

• curprev 21:0521:05, 30 July 2023 147.235.211.25 talk 25,172 bytes +4 In Compressed Sensing application, corrected spelling to “under-determined”. undo Tags: Visual edit Mobile edit Mobile web edit

15 July 2023

• curprev 15:5015:50, 15 July 2023 Icek~enwiki talk contribs m 25,168 bytes 0 →Properties undo
• curprev 15:4915:49, 15 July 2023 Icek~enwiki talk contribs 25,168 bytes +2,300 →Properties: Reason why some matrix sizes are impossible undo

5 June 2023

• curprev 18:5818:58, 5 June 2023 Szozdakosvi talk contribs 22,868 bytes −5 Undid revision 1158704863 by Szozdakosvi (talk) undo Tag: Undo
• curprev 18:5518:55, 5 June 2023 Szozdakosvi talk contribs m 22,873 bytes +5 →Properties: <math> H H^\textsf{T} </math> corrected undo Tag: Reverted

18 May 2023

• curprev 04:5204:52, 18 May 2023 Maxal talk contribs 22,868 bytes +22 →See also undo Tags: Mobile edit Mobile web edit Advanced mobile edit

10 May 2023

• curprev 04:5004:50, 10 May 2023 Ebony Jackson talk contribs m 22,846 bytes −8 →Properties: typography undo

19 April 2023

• curprev 02:5402:54, 19 April 2023 Zaslav talk contribs m 22,854 bytes +2 Ce undo
• curprev 02:4102:41, 19 April 2023 Zaslav talk contribs m 22,852 bytes −6 →Properties: Ce typography. undo

11 February 2023

• curprev 19:3819:38, 11 February 2023 Egeymi talk contribs 22,858 bytes +1 →Properties: fix undo
• curprev 19:3719:37, 11 February 2023 Egeymi talk contribs 22,857 bytes +72 Filled in 1 bare reference undo

27 January 2023

• curprev 19:0319:03, 27 January 2023 Joriki talk contribs 22,785 bytes +102 →Hadamard conjecture: add {{unsolved}} template undo

21 January 2023

• curprev 22:5122:51, 21 January 2023 Citation bot talk contribs 22,683 bytes +95 Add: url, s2cid, authors 1-1. Removed parameters. Some additions/deletions were parameter name changes. | Use this bot. Report bugs. | Suggested by Corvus florensis | #UCB_webform 1521/1746 undo

17 December 2022

• curprev 17:0917:09, 17 December 2022 Will Orrick talk contribs m 22,588 bytes +284 Reverted 1 edit by 112.79.252.27 (talk) to last revision by Dicklyon undo Tags: Twinkle Undo
• curprev 11:3111:31, 17 December 2022 112.79.252.27 talk 22,304 bytes −284 For project undo Tags: Reverted references removed Visual edit Mobile edit Mobile web edit

4 October 2022

• curprev 14:5314:53, 4 October 2022 Dicklyon talk contribs m 22,588 bytes −1 rm comma per MOS:JR (via WP:JWB) undo

11 August 2022

• curprev 14:2214:22, 11 August 2022 Revirvlkodlaku talk contribs 22,589 bytes +42 →top undo Tags: Mobile edit Mobile app edit Android app edit

13 March 2022

• curprev 06:5706:57, 13 March 2022 BrownHairedGirl talk contribs 22,547 bytes +33 tag with {{Bare URL PDF}} undo Tag: AWB

4 January 2022

• curprev 03:1403:14, 4 January 2022 Blacklemon67 talk contribs 22,514 bytes −36 →Generalizations: remove attribution to Olga Taussky-Todd, the citation is not claiming she originally proposed it but instead simply referring to a previous publication undo

3 January 2022

• curprev 21:4921:49, 3 January 2022 Blacklemon67 talk contribs 22,550 bytes +450 →Generalizations: give attribution to the weighing matrix and add a citation undo

10 December 2021

• curprev 04:2104:21, 10 December 2021 Citation bot talk contribs 22,100 bytes +18 Alter: pages. Add: s2cid. Formatted dashes. | Use this bot. Report bugs. | Suggested by Abductive | #UCB_toolbar undo

15 November 2021

• curprev 04:1704:17, 15 November 2021 76.250.32.132 talk 22,082 bytes +578 Enhance and update equivalence and uniqueness section undo

7 November 2021

• curprev 17:4017:40, 7 November 2021 Citation bot talk contribs 21,504 bytes +16 Alter: journal. Add: s2cid. | Use this bot. Report bugs. | Suggested by Headbomb | #UCB_toolbar undo