Hyperboloid model: Revision history

30 May 2024

• curprev 06:0006:00, 30 May 2024 Jacobolus talk contribs m 23,310 bytes +6 →Isometries: slightly shrink space about vdots undo
• curprev 05:5905:59, 30 May 2024 Jacobolus talk contribs m 23,304 bytes +16 →Isometries: tweak matrix internal vertical spacing so diagonal dots line up better undo
• curprev 05:5605:56, 30 May 2024 Jacobolus talk contribs 23,288 bytes +53 →Isometries: expand matrix to use full-size fractions for legibility undo
• curprev 05:5105:51, 30 May 2024 Jacobolus talk contribs m 23,235 bytes −22 →Symmetries of horospheres: use \tfrac12 for division by 2, so |b|^2 can be full size undo

13 December 2023

• curprev 23:2123:21, 13 December 2023 Cosmia Nebula talk contribs 23,257 bytes +134 →Minkowski quadratic form: metric undo Tag: Visual edit

27 September 2023

• curprev 05:5805:58, 27 September 2023 Citation bot talk contribs 23,123 bytes −16 Removed parameters. | Use this bot. Report bugs. | #UCB_CommandLine undo

6 March 2023

• curprev 15:2215:22, 6 March 2023 138.232.1.198 talk 23,139 bytes 0 Corrected formula for geodesic, since cosh(0)=1, sinh(0)=0 and only v lies on the hyperboloid, while u doesn't. undo

18 January 2023

• curprev 20:2420:24, 18 January 2023 Jacobolus talk contribs 23,139 bytes −35 Undid revision 1134449688 by Kri (talk) "hyperboloid model" and "Minkowski model" seems sufficient. Readers are smart enough to figure out the "Minkowski hyperboloid model" is the same as those two undo Tag: Undo
• curprev 19:2219:22, 18 January 2023 Kri talk contribs 23,174 bytes +35 the hyperboloid model is also known as the "Minkowski hyperboloid" undo Tag: Reverted

10 August 2022

• curprev 11:0111:01, 10 August 2022 D.H talk contribs m 23,139 bytes −48 →History: ce undo

2 August 2022

• curprev 19:2219:22, 2 August 2022 Jacobolus talk contribs m 23,187 bytes +135 No edit summary undo
• curprev 19:1919:19, 2 August 2022 Jacobolus talk contribs m 23,052 bytes −1 No edit summary undo
• curprev 19:1819:18, 2 August 2022 Jacobolus talk contribs 23,053 bytes +1,187 rewrite second half of the lead paragraph (and split off a separate paragraph) to hopefully be a bit clearer, esp. about the relation to other models of hyperbolic space undo
• curprev 14:5614:56, 2 August 2022 Jacobolus talk contribs m 21,866 bytes +5 →Choice of metric signature undo
• curprev 14:5514:55, 2 August 2022 Jacobolus talk contribs 21,861 bytes −27 →Minkowski quadratic form: try to reword for clarity; others should feel free to take a shot. also switching to 3-dimensional minkowski space since this article is mostly about the hyperbolic plane undo
• curprev 14:3014:30, 2 August 2022 Jacobolus talk contribs 21,888 bytes +7 →Differential geometry: this note doesn't need to be called "differential geometry" undo
• curprev 14:0514:05, 2 August 2022 Jacobolus talk contribs 21,881 bytes −78 →Differential geometry undo
• curprev 14:0314:03, 2 August 2022 Jacobolus talk contribs m 21,959 bytes +94 →Differential geometry undo
• curprev 14:0114:01, 2 August 2022 Jacobolus talk contribs m 21,865 bytes +12 →Differential geometry undo
• curprev 13:5813:58, 2 August 2022 Jacobolus talk contribs 21,853 bytes +111 →Differential geometry undo
• curprev 05:1205:12, 2 August 2022 D0SBoots talk contribs 21,742 bytes +949 Flip sign of quadratic/bilinear form, and add a section on differential geometry that explains why this is not an arbitrary choice for the hyperboloid model. See also: https://math.stackexchange.com/questions/4503880/question-about-the-metric-signature-of-the-hyperboloid-model undo

6 February 2022

• curprev 19:0719:07, 6 February 2022 SpiralSource talk contribs 20,793 bytes +65 Adding short description: "Model of n-dimensional hyperbolic geometry" (Shortdesc helper) undo

8 January 2022

• curprev 20:3320:33, 8 January 2022 Kri talk contribs 20,728 bytes +103 →Minkowski quadratic form: Mentioned scalar product notation undo

21 August 2021

• curprev 22:1122:11, 21 August 2021 2607:fea8:12a1:2b00::161a talk 20,625 bytes +1 comma usage undo

26 June 2021

• curprev 00:2400:24, 26 June 2021 SdkbBot talk contribs m 20,624 bytes −1 →History: General fixes, removed erroneous space undo Tag: AWB

29 January 2021

• curprev 22:2022:20, 29 January 2021 IznoRepeat talk contribs 20,625 bytes −5 invert math-link placement for upcoming tstyles undo Tag: AWB

25 December 2020

• curprev 00:4700:47, 25 December 2020 PSL27 talk contribs 20,630 bytes +149 Added animation showing rotation of partial {7,3} tiling of the hyperboloid into Poincare perspective. undo

22 October 2020

• curprev 09:4309:43, 22 October 2020 D.H talk contribs 20,481 bytes +592 →History: References undo

14 October 2020

• curprev 23:4923:49, 14 October 2020 TheKing44 talk contribs 19,889 bytes −484 →Isometries: Make special isometry section clearer. undo Tag: 2017 wikitext editor

6 September 2020

• curprev 13:3213:32, 6 September 2020 TheKing44 talk contribs 20,373 bytes +1,521 →Reflections exchanging two specific points: Added method for finding translations along a given line undo Tag: 2017 wikitext editor
• curprev 03:0103:01, 6 September 2020 TheKing44 talk contribs 18,852 bytes +693 →Reflections exchanging two specific points: Added a method of finding the stabilizer of a point undo Tag: 2017 wikitext editor
• curprev 02:4902:49, 6 September 2020 TheKing44 talk contribs m 18,159 bytes +3 →Rotations and reflections that preserve the origin undo Tag: 2017 wikitext editor
• curprev 02:4802:48, 6 September 2020 TheKing44 talk contribs m 18,156 bytes +1 →Rotations and reflections that preserve the origin: Forgot to use the n-dimensional origin. undo Tag: 2017 wikitext editor
• curprev 02:2502:25, 6 September 2020 TheKing44 talk contribs 18,155 bytes +3,254 Added matrices for rotations, translations, reflections, and hororotations in n-dimensions. undo Tag: 2017 wikitext editor

29 August 2020

• curprev 23:1723:17, 29 August 2020 D0SBoots talk contribs 14,901 bytes +1,295 →Isometries: Add concrete translation matrices undo

14 May 2020

• curprev 13:0213:02, 14 May 2020 JFB80 talk contribs 13,606 bytes −54 'Lorentz model' deleted. Nowhere did Lorentz talk about hyperbolic geometry. undo
• curprev 00:1100:11, 14 May 2020 JRSpriggs talk contribs 13,660 bytes −1 Undid revision 956432071 by 83.134.106.186 (talk) + is correct for the context of this article undo Tag: Undo

13 May 2020

• curprev 09:3109:31, 13 May 2020 83.134.106.186 talk 13,661 bytes +1 The sign is wrong. We have to reserve the it in the definition of Q or the metric B. I suppose changing Q to keep compatibility with the page for Minkowski space Reference: page 70-71 of this note https://www.math.brown.edu/~rkenyon/papers/cannon.pdf (English) or page 193-194 of https://www.imo.universite-paris-saclay.fr/~paulin/notescours/cours_geodiff.pdf (French) undo

8 March 2020

• curprev 22:5522:55, 8 March 2020 InternetArchiveBot talk contribs 13,660 bytes +60 Bluelink 1 book for verifiability. [goog]) #IABot (v2.0) (GreenC bot undo

19 December 2019

• curprev 06:0806:08, 19 December 2019 JFB80 talk contribs 13,600 bytes −613 →History: Definition of Weierstrass coordinates deleted. It is inconsistent with the descriptions given in the historical remarks and contains no reference to curvature k. undo

18 December 2019

• curprev 11:0911:09, 18 December 2019 InternetArchiveBot talk contribs 14,213 bytes +86 Bluelinking 1 books for verifiability.) #IABot (v2.1alpha3 undo

14 December 2019

• curprev 00:2800:28, 14 December 2019 Rgdboer talk contribs m 14,127 bytes +8 →History: dress Jstor undo

9 November 2019

• curprev 01:1201:12, 9 November 2019 Rgdboer talk contribs 14,119 bytes −297 →Minkowski quadratic form: mv tensor to Talk#Tensor undo

8 November 2019

• curprev 14:4914:49, 8 November 2019 66.195.166.226 talk 14,416 bytes +34 →Minkowski quadratic form undo
• curprev 14:4414:44, 8 November 2019 66.195.166.226 talk 14,382 bytes +263 →Minkowski quadratic form undo

3 November 2019

• curprev 20:5120:51, 3 November 2019 Sun Creator talk contribs m 14,119 bytes −7 General fixes, typo(s) fixed: … → ... (2), ’s → 's undo Tag: AWB

17 August 2019

• curprev 12:5312:53, 17 August 2019 Renata500 talk contribs m 14,126 bytes −3 Corrected the title, and updated the link to my paper. undo

5 March 2019

• curprev 23:1723:17, 5 March 2019 Citation bot talk contribs m 14,129 bytes +25 Alter: journal, pages, title, isbn. Add: title-link. | You can use this bot yourself. Report bugs here. | User-activated. undo

9 December 2018

• curprev 08:0408:04, 9 December 2018 JFB80 talk contribs 14,104 bytes +23 →History: Correction Minkowski 1907 not 1908 undo

1 December 2018

• curprev 07:5207:52, 1 December 2018 2001:268:c048:1d:901a:9b1b:7a54:1023 talk 14,081 bytes +30 Undid revision 871467918 by 2001:268:C048:1D:901A:9B1B:7A54:1023 (talk) undo Tag: Undo