Illumination problem: Revision history

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curprev 18:4118:41, 26 April 2024‎ Citation bot talk contribs‎ 6,640 bytes +16‎ Altered template type. Add: eprint, class. Removed parameters. Some additions/deletions were parameter name changes. | Use this bot. Report bugs. | #UCB_CommandLine undo

curprev 07:2407:24, 31 March 2024‎ David Eppstein talk contribs‎ 6,624 bytes −2‎ →‎Polygonal rooms: cite arxiv not cite journal undo

curprev 10:1910:19, 29 October 2023‎ 2a00:23c5:fe56:6c01:1997:bc3e:f8e4:5c5b talk‎ 7,222 bytes −3‎ it's "billiard ball", not "billiards ball" undo

curprev 03:5203:52, 3 August 2023‎ BattyBot talk contribs‎ 7,225 bytes −1‎ Moved See also above References per MOS:ORDER and other General fixes undo Tag: AWB

curprev 07:5007:50, 9 May 2023‎ Saung Tadashi talk contribs‎ 7,226 bytes +170‎ No edit summary undo Tag: Visual edit

curprev 22:2322:23, 29 March 2023‎ Citation bot talk contribs‎ 7,056 bytes +11‎ Add: year. | Use this bot. Report bugs. | Suggested by Abductive | Category:Dynamical systems | #UCB_Category 33/265 undo

curprev 22:5922:59, 5 February 2023‎ Lowellian talk contribs‎ 7,045 bytes −7‎ +missing first name undo
curprev 22:5822:58, 5 February 2023‎ Lowellian talk contribs‎ 7,052 bytes +27‎ +missing first names undo

curprev 20:3420:34, 20 November 2022‎ Wolecki talk contribs‎ m 7,025 bytes +12‎ fixed reference and phrasing undo Tag: Visual edit: Switched
curprev 11:3611:36, 20 November 2022‎ 84.108.216.15 talk‎ 7,013 bytes +261‎ A reference to a new paper of Wolecki was added. This improves the earlier result of Lelievre-Monteil-Weiss. undo

curprev 18:2718:27, 28 August 2022‎ TheMathCat talk contribs‎ m 6,752 bytes +21‎ doi-access=free undo
curprev 18:1418:14, 28 August 2022‎ Dabed talk contribs‎ 6,731 bytes +31‎ +Category:Dynamical systems (same category as Dynamical billiard table) undo Tag: Visual edit

curprev 16:1416:14, 22 August 2022‎ Gurveer2837890 talk contribs‎ m 6,700 bytes −1‎ →‎Polygonal rooms undo

curprev 09:0209:02, 19 August 2022‎ Saung Tadashi talk contribs‎ 6,701 bytes +166‎ →‎External links undo Tag: Visual edit

curprev 16:0916:09, 3 August 2022‎ Gurveer2837890 talk contribs‎ m 6,535 bytes +2‎ →‎Polygonal rooms undo

curprev 18:5718:57, 29 July 2022‎ Gurveer2837890 talk contribs‎ 6,533 bytes +930‎ No edit summary undo Tag: references removed
curprev 16:0616:06, 29 July 2022‎ Gurveer2837890 talk contribs‎ 5,603 bytes +156‎ →‎External links undo

curprev 18:2218:22, 22 June 2022‎ Gurveer2837890 talk contribs‎ 5,447 bytes +154‎ Undid revision 1094453278 by XLinkBot (talk) undo Tags: Undo reverting anti-vandal bot
curprev 18:1618:16, 22 June 2022‎ XLinkBot talk contribs‎ 5,293 bytes −154‎ BOT--Reverting link addition(s) by Gurveer2837890 to revision 1091115494 (www.youtube.com/watch?v=5ILv2YsYHkI [\byoutube\.com]) undo Tags: Manual revert Reverted
curprev 18:1518:15, 22 June 2022‎ Gurveer2837890 talk contribs‎ 5,447 bytes +154‎ →‎External links undo Tags: Reverted Visual edit

curprev 08:3408:34, 2 June 2022‎ Mikhail Ryazanov talk contribs‎ m 5,293 bytes +28‎ punct., style undo

curprev 21:5821:58, 23 May 2022‎ Widefox talk contribs‎ 5,265 bytes +159‎ sep lead, sep sections, links, layout undo

curprev 09:0309:03, 20 May 2022‎ Saung Tadashi talk contribs‎ 5,106 bytes +19‎ →‎External links undo Tag: Visual edit
curprev 08:2208:22, 20 May 2022‎ Halfcookie talk contribs‎ 5,087 bytes +130‎ →‎External links undo

curprev 11:4311:43, 13 May 2022‎ Saung Tadashi talk contribs‎ 4,957 bytes +167‎ →‎External links undo Tag: Visual edit

curprev 12:2712:27, 23 October 2021‎ Lowellian talk contribs‎ 4,790 bytes +7‎ give full names undo

curprev 09:2309:23, 1 February 2021‎ ReyHahn talk contribs‎ 4,783 bytes −2,346‎ Undid revision 1002260503 by Peterungar (talk) a discussion in Wikipedia:Administrators' noticeboard/Edit warring has been opened, please discuss there before reverting back, also this version cannot be retained due to (at least) formatting issues undo Tag: Undo

curprev 16:0816:08, 23 January 2021‎ Peterungar talk contribs‎ 7,129 bytes +2,346‎ I inserted a reference to Penrose's original solution, which is freely accessible on the internet. Penrose does not explain why the 3-dimensional version of his example is non-illuminable. The explanation requires some familiarity with analytic geometry which I have to assume. We can not expect Wikipedia articles on advanced topics in math and science to require no more than high school knowledge to be understood. undo Tag: Reverted

curprev 13:4413:44, 21 January 2021‎ Eridian314 talk contribs‎ 4,783 bytes −3,322‎ Reverted to revision 992550265 by Lowellian (talk) undo Tags: Twinkle Undo

curprev 13:3213:32, 7 December 2020‎ Peterungar talk contribs‎ m 8,105 bytes 0‎ Format undo Tag: Reverted
curprev 13:2613:26, 7 December 2020‎ Peterungar talk contribs‎ 8,105 bytes +3,322‎ This topic is a piece of mathematics. In mathematics, we are interested not just in facts but also in proving why those facts are true.. The simple curve given by Penrose,with a few words of explanation tells the reader why his figure is unilluminable. The three colorful figures with unnecessary zigzags, copied from Mathworld and misleadingly attributed to Penrose, do not. I sent the explanation of the 3-dimensional example to Prof. Howard Masur, before I put it in Wikipedia. He thought undo Tag: Reverted

curprev 21:3121:31, 5 December 2020‎ Lowellian talk contribs‎ 4,783 bytes +157‎ per talk, restore earlier form of article that was well-formatted, had images, and many references instead of the badly-formatted wall of text original research proof that article was replaced with on july 30, 2020 undo Tag: Manual revert

curprev 11:3911:39, 4 December 2020‎ Peterungar talk contribs‎ 4,626 bytes +80‎ Added a few words undo Tag: Reverted

curprev 22:4122:41, 3 December 2020‎ Peterungar talk contribs‎ 4,546 bytes −237‎ I expanded and explained Penrose's sketchily presented solution of the 2 and 3 dimensional problem. I removed what was a copy of the article in Wolfram's Mathworld. undo Tag: Reverted

curprev 23:5523:55, 30 November 2020‎ Lowellian talk contribs‎ 4,783 bytes −476‎ restore earlier form of article that was well-formatted and had images instead of the badly-formatted wall of text proof that article was replaced on july 30, 2020 undo Tag: Manual revert

curprev 13:0313:03, 27 October 2020‎ Peterungar talk contribs‎ m 5,259 bytes +761‎ I made the proof of the focal reflection property clearer undo Tag: Reverted

curprev 09:0509:05, 26 October 2020‎ I dream of horses talk contribs‎ 4,498 bytes −54‎ →‎top: clean up, removed deadend tag undo Tags: AWB Reverted
curprev 08:5908:59, 26 October 2020‎ Retswerb talk contribs‎ 4,552 bytes +11‎ c/e undo Tag: Reverted
curprev 08:5408:54, 26 October 2020‎ Retswerb talk contribs‎ 4,541 bytes +39‎ wikilinks, c/e undo Tag: Reverted
curprev 05:3605:36, 26 October 2020‎ I dream of horses talk contribs‎ 4,502 bytes +60‎ →‎top: clean up, added deadend tag undo Tags: AWB Reverted

curprev 14:0914:09, 25 October 2020‎ Peterungar talk contribs‎ m 4,442 bytes +7‎ Inserted 1 word undo Tag: Reverted

curprev 18:5118:51, 24 October 2020‎ Kj cheetham talk contribs‎ 4,435 bytes +44‎ Added {{More citations needed}} tag undo Tags: Twinkle Reverted
curprev 17:0317:03, 24 October 2020‎ RealSanix talk contribs‎ 4,391 bytes +38‎ Added {{Cleanup rewrite}} tag undo Tags: Twinkle Reverted

curprev 16:4616:46, 13 October 2020‎ Peterungar talk contribs‎ m 4,353 bytes −7‎ Deleted 1 word undo Tag: Reverted

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