Crystallographic point group: Revision history

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curprev 21:1021:10, 7 May 2024 76.76.247.174 talk 16,859 bytes −14 →Schoenflies notation undo

curprev 06:4006:40, 14 February 2024 2001:871:252:d115:3f3f:f43d:672a:45c5 talk 16,873 bytes −209 Removing the figure, as it is clearly wrong! 6mm has no inversion symmetry, therefore -3 or 2/m can never be subgroups of 6mm. This should be replaced by a corrected diagram. undo

curprev 13:0613:06, 11 February 2024 2001:871:252:d115:a01e:ad5b:2d76:a5c talk 17,082 bytes −15 There is no rhombohedral crystal system. Rhombohedral is a lattice system. The trigonal crystal system may appear in the rhombohedral (hR) or hexagonal primitive (hP) lattice systems. Source: International Tables for Crystallography. undo
curprev 12:5912:59, 11 February 2024 2001:871:252:d115:a01e:ad5b:2d76:a5c talk 17,097 bytes −295 The introduction was just wrong. A point group maps a crystal onto itself only in the case of the 73 symmorphic space groups. This still needs work, but at least it is not completely wrong. undo

curprev 02:5202:52, 15 February 2023 140.116.1.143 talk 17,392 bytes +15 →Hermann–Mauguin notation undo Tag: Visual edit

curprev 00:1300:13, 30 October 2022 Citation bot talk contribs 17,377 bytes +48 Add: s2cid, bibcode. | Use this bot. Report bugs. | Suggested by Abductive | #UCB_webform 1615/3850 undo

curprev 16:5316:53, 6 October 2022 Pendraeco talk contribs m 17,329 bytes +1 →top: Fixed grammar undo Tags: canned edit summary Mobile edit Mobile app edit Android app edit

curprev 17:3317:33, 23 August 2022 Citation bot talk contribs 17,328 bytes +18 Alter: title. | Use this bot. Report bugs. | Suggested by BrownHairedGirl | #UCB_webform 612/3841 undo

curprev 14:2014:20, 29 July 2022 Turgidson talk contribs 17,310 bytes +35 →Deriving the crystallographic point group (crystal class) from the space group: links, copy-edit undo Tag: 2017 wikitext editor

curprev 05:0505:05, 25 July 2022 Officer781 talk contribs 17,275 bytes −2 →Hermann–Mauguin notation: move the image up before the sentence undo
curprev 05:0205:02, 25 July 2022 Officer781 talk contribs 17,277 bytes +10 →Hermann–Mauguin notation: add clear template undo
curprev 05:0205:02, 25 July 2022 Officer781 talk contribs 17,267 bytes −21 →Hermann–Mauguin notation: we don't usually put the image as a large rowspan thing on the side of the table. just thumb it. otherwise it distorts the table. undo

curprev 16:3816:38, 16 July 2022 Officer781 talk contribs 17,288 bytes +21 →External links: Add crystal systems template undo Tags: Mobile edit Mobile web edit Advanced mobile edit
curprev 15:5715:57, 16 July 2022 Officer781 talk contribs 17,267 bytes +2 →The correspondence between different notations: Put missing double apostrophes undo Tags: Mobile edit Mobile web edit Advanced mobile edit
curprev 15:5615:56, 16 July 2022 Officer781 talk contribs 17,265 bytes +82 →The correspondence between different notations: Per previous edit undo Tags: Mobile edit Mobile web edit Advanced mobile edit
curprev 15:5315:53, 16 July 2022 Officer781 talk contribs 17,183 bytes +69 →Hermann–Mauguin notation: Add crystal family to article just like bravais lattice article undo Tags: Mobile edit Mobile web edit Advanced mobile edit

curprev 12:4912:49, 14 March 2022 Vsmith talk contribs m 17,114 bytes −1 Reverted edits by 188.39.47.138 (talk) to last version by ಮಲ್ನಾಡಾಚ್ ಕೊಂಕ್ಣೊ undo Tag: Rollback
curprev 10:5410:54, 14 March 2022 188.39.47.138 talk 17,115 bytes +1 No edit summary undo Tag: Reverted

curprev 12:2912:29, 26 January 2022 ಮಲ್ನಾಡಾಚ್ ಕೊಂಕ್ಣೊ talk contribs m 17,114 bytes −11 Removed table attributes which are redundant due to wikitable class undo

curprev 19:5419:54, 25 November 2021 Kent G. Budge talk contribs 17,125 bytes −31 It is not possible for an axis to be perpendicular to adjacent faces of a cube. And if it is *parallel* to two adjacent faces, it must necessarily be perpendicular to a third face. undo
curprev 19:0519:05, 25 November 2021 50.123.77.139 talk 17,156 bytes 0 As previously worded, the example did not correctly specify an orthogonal axis. Being perpendicular to two parallel faces is redundant and exactly the same as being perpendicular to only one face, which would have allowed the axis of rotation to be oriented at any arbitrary angle within the constrained plane, violating cubic symmetry. I changed the word parallel to adjacent, which does properly restrict the axis to preserve cubic symmetry, because adjacent faces of a cube are perpendicular to... undo Tags: Mobile edit Mobile web edit

curprev 21:3521:35, 24 November 2021 Rlink2 talk contribs m 17,156 bytes +9 archive link repair, may include: archive.* -> archive.today, http->https for ghostarchive.org and archive.org, and fixing refs for IABot phab:T291704 undo Tag: AWB

curprev 00:0600:06, 9 November 2021 Epolk talk contribs 17,147 bytes +56 No edit summary undo Tags: Mobile edit Mobile app edit Android app edit

curprev 19:1119:11, 13 October 2021 70.83.58.252 talk 17,091 bytes 0 →Isomorphisms: Replaced notation Zn with more common notation Cn for the abstract cyclic group of order n. (Note that the page on cyclic groups (cited at the end of the section) does not even mention the notation Zn.) undo

curprev 19:3419:34, 5 October 2021 Eric Kvaalen talk contribs 17,091 bytes +76 You have to allow translations after the point group operation. Not all crystals in the cubic system will be unchanged upon rotation by 90°! "Cubic" and so on are systems, not claasses. undo

curprev 19:5519:55, 15 January 2021 Mike Peel talk contribs 17,015 bytes −34 Removing Commons category link that does not match this article (commons:Category:Point groups) (Commons category belongs at Point_group) undo

curprev 14:1814:18, 20 December 2020 Monkbot talk contribs m 17,049 bytes +3 Task 18 (cosmetic): eval 2 templates: hyphenate params (3×); undo Tag: AWB

curprev 16:0416:04, 27 October 2020 Forbes72 talk contribs 17,046 bytes +484 →Isomorphisms: add small groups library index undo

curprev 19:2919:29, 1 October 2020 Forbes72 talk contribs 16,562 bytes +38 →Isomorphisms: add related link undo

curprev 02:0802:08, 19 September 2020 Forbes72 talk contribs m 16,524 bytes 0 →Isomorphisms: capitalization undo
curprev 02:0802:08, 19 September 2020 Forbes72 talk contribs 16,524 bytes +42 →Isomorphisms: also mentioned a symmetric group undo
curprev 01:3801:38, 19 September 2020 Forbes72 talk contribs 16,482 bytes +51 →Isomorphisms: add wikilinks, clarify some phrasing undo
curprev 01:3601:36, 19 September 2020 Forbes72 talk contribs 16,431 bytes +3,815 describe isomorphisms, source undo

curprev 09:3709:37, 31 July 2020 InternetArchiveBot talk contribs 12,616 bytes +43 Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.1 undo

curprev 20:1020:10, 2 March 2020 Barbireau talk contribs 12,573 bytes −2 →Hermann–Mauguin notation undo
curprev 20:1020:10, 2 March 2020 Barbireau talk contribs 12,575 bytes −47 →Hermann–Mauguin notation: Make notation consistent with the picture on the right of the table. undo

curprev 00:1100:11, 8 January 2020 Amarithine talk contribs m 12,622 bytes +5 No edit summary undo Tag: Visual edit

curprev 23:3323:33, 7 January 2020 Amarithine talk contribs m 12,617 bytes +2 No edit summary undo Tag: Visual edit
curprev 23:2723:27, 7 January 2020 Amarithine talk contribs m 12,615 bytes +19 No edit summary undo Tag: Visual edit
curprev 23:2423:24, 7 January 2020 Amarithine talk contribs 12,596 bytes −102 Major overall of the introduction as some of the information presented, though potentially informative, was vague and cannot be understood from the non - expert. undo Tag: Visual edit

curprev 19:3819:38, 11 December 2019 Eric Kvaalen talk contribs 12,698 bytes +783 The first sentence was not a proper definition, so I replaced it. Added a section on deriving the point group from the space group, borrowed from the Space group article. undo

curprev 08:4908:49, 17 September 2019 Monkbot talk contribs m 11,915 bytes −1 →The correspondence between different notations: Task 16: replaced (1×) / removed (0×) deprecated |dead-url= and |deadurl= with |url-status=; undo Tag: AWB

curprev 16:4216:42, 8 August 2019 Colt browning talk contribs 11,916 bytes +12 No edit summary undo

curprev 10:5610:56, 19 April 2019 Mike.al.93 talk contribs 11,904 bytes +54 Undid revision 893152184 by Mike.al.93 (talk) undo Tag: Undo
curprev 10:5410:54, 19 April 2019 Mike.al.93 talk contribs 11,850 bytes −54 Only the forbidden point groups should be highlighted in the table undo

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