Euler characteristic: Revision history

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curprev 10:1110:11, 7 October 2024 Oatmealbrian talk contribs m 29,697 bytes +17 →Homotopy invariance: The article claimed that convex polyhedra had Euler characteristic 2. But convex sets are contractible and so have Euler characteristic 1. Given the previous few sentences in the article, I believe the intention was to say that the surface of this polyhedron has Euler characteristic 2. undo Tag: Visual edit

curprev 11:1711:17, 12 September 2024 79.30.124.165 talk 29,680 bytes +24 →Plane graphs: added link to the definition of a tree in graph theory undo

curprev 21:4621:46, 8 September 2024 104.51.232.61 talk 29,656 bytes +18 I fixed a link to Möbius function, which previously pointed to the Möbius function of number theory instead of the relevant Möbius function of combinatorics. undo Tags: Mobile edit Mobile app edit iOS app edit App full source

curprev 01:4501:45, 28 August 2024 Mgnbar talk contribs 29,638 bytes +24 Undid revision 1242662892 by 2603:6000:8C02:79C:3184:EB0A:41B6:CDFF (talk) undo Tag: Undo
curprev 01:2501:25, 28 August 2024 2603:6000:8c02:79c:3184:eb0a:41b6:cdff talk 29,614 bytes −24 →Surfaces undo Tags: Reverted Mobile edit Mobile web edit

curprev 14:5314:53, 17 June 2024 BorishanGh talk contribs m 29,638 bytes 0 →Connected sum: fixed minor formatting error undo Tag: Visual edit

curprev 21:2721:27, 7 March 2024 Druiffic talk contribs 29,638 bytes 0 →Arbitrary dimensions: -- Letter mismatch. We're using k to index homology groups but n to index dimensions of objects. undo

curprev 14:4414:44, 22 August 2023 Citation bot talk contribs 29,638 bytes +35 Add: s2cid, doi. | Use this bot. Report bugs. | Suggested by Abductive | #UCB_webform 79/3850 undo

curprev 07:0207:02, 27 June 2023 Rodw talk contribs m 29,603 bytes +10 Disambiguating links to University of the Pacific (link changed to University of the Pacific, Stockton) using DisamAssist. undo

curprev 05:1505:15, 7 June 2023 David Eppstein talk contribs 28,064 bytes 0 Undid revision 1158920497 by 108.41.98.105 (talk) was better before; split infinitives are normal and colloquial in English despite their nonexistence in certain Romance languages undo Tag: Undo
curprev 02:2802:28, 7 June 2023 108.41.98.105 talk 28,064 bytes 0 fixed split infinitive undo Tag: Reverted

curprev 19:2519:25, 24 May 2023 Mgnbar talk contribs 28,064 bytes 0 Undid revision 1156799336 by 204.54.33.137 (talk); rv 1 good-faith edit; in this case the hyphen is wrong undo Tag: Undo
curprev 17:4317:43, 24 May 2023 204.54.33.137 talk 28,064 bytes 0 Added hyphen undo Tag: Reverted

curprev 02:4402:44, 16 March 2023 Tamfang talk contribs 28,064 bytes +102 →Soccer ball undo

curprev 23:0323:03, 12 March 2023 Mgnbar talk contribs 27,962 bytes 0 Undid revision 1144289960 by Az123az12 (talk); no, Euler char of Mobius is 0 undo Tag: Undo
curprev 22:2622:26, 12 March 2023 Az123az12 talk contribs m 27,962 bytes 0 corrected the Euler characteristics of a Mobius strip undo Tag: Reverted

curprev 01:2601:26, 7 February 2023 David Eppstein talk contribs 27,962 bytes −297 Undid revision 1137900286 by Cononsense (talk) zero usage of this term in scholarly publications. We can't just include every name that was used once as a neologism in some publication and then forgotten. undo Tag: Undo
curprev 00:2900:29, 7 February 2023 Cononsense talk contribs 28,259 bytes +297 No edit summary undo Tags: Reverted 2017 wikitext editor

curprev 19:1819:18, 25 January 2023 2600:1700:8070:8bf0:444:d1db:b2d7:6008 talk 27,962 bytes +13 →Proof of Euler's formula: Changed "This" to "Each new diagonal" because original wording was vague and appeared the word "This" seemed to refer to the entire process of adding all diagonals in the step, which would not be strictly true in general. undo

curprev 00:4700:47, 8 January 2023 Michael Hardy talk contribs 27,949 bytes +167 →Polyhedra undo
curprev 00:4500:45, 8 January 2023 Michael Hardy talk contribs m 27,782 bytes +2 →Polyhedra undo

curprev 14:1814:18, 7 December 2022 Christian Lawson-Perfect talk contribs m 27,780 bytes −2 Replaced the diagram showing a vertex, edge and face of a cube with a more accessible version: the highlights are bigger, and there's white space around them so they stand out even when the difference in colour can't be seen. undo

curprev 17:1117:11, 10 November 2022 Worst Username talk contribs m 27,782 bytes +32 Added links undo Tags: Mobile edit Mobile app edit iOS app edit

curprev 22:5422:54, 6 October 2022 Cmglee talk contribs 27,750 bytes +223 →Arbitrary dimensions: Right-align table undo

curprev 22:1322:13, 11 September 2022 SWinxy talk contribs m 27,527 bytes +3 →Arbitrary dimensions: class="wikitable floatright" undo Tag: 2017 wikitext editor

curprev 07:1207:12, 15 July 2022 Citation bot talk contribs 27,524 bytes +17 Add: s2cid. | Use this bot. Report bugs. | Suggested by Smasongarrison | Linked from User:Smasongarrison/sandbox | #UCB_webform_linked 360/2934 undo

curprev 06:4506:45, 28 May 2022 David Eppstein talk contribs 27,507 bytes +8 Title was out of date — it's up to 21 proofs now (COI edit, but minor update to existing reference) undo

curprev 12:4612:46, 13 April 2022 VaudevillianScientist talk contribs m 27,499 bytes +14 →External links undo Tag: 2017 wikitext editor

curprev 18:5718:57, 1 March 2022 InternetArchiveBot talk contribs 27,485 bytes +129 Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.8.6) (Whoop whoop pull up - 9593 undo

curprev 19:2319:23, 8 November 2021 Citation bot talk contribs 27,356 bytes +87 Alter: journal, url. URLs might have been anonymized. Add: doi, volume, series. | Use this bot. Report bugs. | Suggested by Whoop whoop pull up | #UCB_webform 1440/2182 undo

curprev 10:5910:59, 6 October 2021 85.255.237.31 talk 27,269 bytes +31 →Topological definition undo
curprev 10:5010:50, 6 October 2021 85.255.237.31 talk 27,238 bytes +16 →Topological definition undo

curprev 19:0419:04, 16 September 2021 Beland talk contribs 27,222 bytes −56 →Surfaces: use each column only once, to make table more accessible to screen readers undo
curprev 19:0219:02, 16 September 2021 Beland talk contribs 27,278 bytes −56 →Surfaces: streamline markup undo

curprev 18:0218:02, 9 September 2021 164.52.242.130 talk 27,334 bytes +28 →Generalizations: this is true in reduced homology undo

curprev 12:5512:55, 7 September 2021 Cmglee talk contribs 27,306 bytes +165 →Arbitrary dimensions: Add Euler_characteristic_hypercube_simplex.svg undo

curprev 08:1908:19, 2 September 2021 Cmglee talk contribs 27,141 bytes −11 →Arbitrary dimensions: Use table caption undo
curprev 08:1708:17, 2 September 2021 Cmglee talk contribs 27,152 bytes +801 →Arbitrary dimensions: Add table of regular 4-polytopes undo

curprev 17:4117:41, 29 August 2021 Bekemm talk contribs m 26,351 bytes −1 typo fix undo Tag: Visual edit

curprev 15:5915:59, 22 August 2021 2003:c3:671c:ac00:9951:83f4:72e:d01a talk 26,352 bytes +404 →Surfaces undo
curprev 15:2115:21, 22 August 2021 2003:c3:671c:ac00:9951:83f4:72e:d01a talk 25,948 bytes +58 →Surfaces undo

curprev 21:4421:44, 7 August 2021 2003:c3:671c:ac00:345e:22e1:bea8:ce74 talk 25,890 bytes +3 →Surfaces undo

curprev 18:0218:02, 5 August 2021 108.17.122.23 talk 25,887 bytes −22 →Generalizations: use nLab template for reference undo

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