Spectrum (functional analysis): Revision history

12 September 2024

• curprev 07:4907:49, 12 September 2024 TheKnutsen talk contribs m 30,314 bytes −6 removed "which" to make the sentence grammatical undo

16 August 2024

• curprev 21:5221:52, 16 August 2024 Luca Innocenti talk contribs m 30,320 bytes +12 converted to latex formula b/c previous version was broken into different lines undo Tag: Visual edit

9 August 2024

• curprev 12:2712:27, 9 August 2024 134.102.106.155 talk 30,308 bytes −28 →Basic properties: Corrected a mistake. If X is the 0 space then the spectrum is empty. undo Tags: Mobile edit Mobile web edit

18 April 2024

• curprev 01:0301:03, 18 April 2024 Hbghlyj talk contribs 30,336 bytes +242 cite web undo

14 March 2024

• curprev 18:1718:17, 14 March 2024 Starlighsky talk contribs m 30,094 bytes +22 Added link undo Tags: Visual edit Newcomer task Newcomer task: expand

4 March 2024

• curprev 13:4713:47, 4 March 2024 Hbghlyj talk contribs m 30,072 bytes +2 add "I" undo

21 January 2024

• curprev 00:5600:56, 21 January 2024 Mlkj talk contribs 30,070 bytes +56 Add {{for|Spectrum of a ring}}, since the other use of the term is not necessarily obvious to beginners like Yours Truly undo Tag: 2017 wikitext editor

12 December 2023

• curprev 03:2403:24, 12 December 2023 Fgnievinski talk contribs 30,014 bytes +4 →top undo

3 December 2023

• curprev 05:5305:53, 3 December 2023 Roffaduft talk contribs 30,010 bytes +939 Added sources. Made distinction between "pure point" and "point" spectrum. Moved up "Discrete spectrum" and added it being a subset of the point spectrum undo

27 November 2023

• curprev 21:4121:41, 27 November 2023 AnomieBOT talk contribs m 29,071 bytes +19 Dating maintenance tags: {{Clarify}} undo
• curprev 19:4019:40, 27 November 2023 99.47.116.190 talk 29,052 bytes +11 Add request for clarification. undo

6 February 2023

• curprev 03:2703:27, 6 February 2023 Athena.Jennings talk contribs m 29,041 bytes +7 →Spectrum of a unital Banach algebra: Clarified B(X) is unital. undo

28 January 2023

• curprev 09:0709:07, 28 January 2023 WikiCleanerBot talk contribs m 29,034 bytes −1 v2.05b - Bot T20 CW#61 - Fix errors for CW project (Reference before punctuation) undo Tag: WPCleaner

25 January 2023

• curprev 23:4523:45, 25 January 2023 StrokeOfMidnight talk contribs 29,035 bytes +4 Oversight fixed: thank you, RadostW, for pointing this out undo

22 January 2023

• curprev 04:3704:37, 22 January 2023 StrokeOfMidnight talk contribs 29,031 bytes +192 Spelled out the definition of spectrum for a *bounded* operator undo
• curprev 03:4303:43, 22 January 2023 Symphysy talk contribs 28,839 bytes +1 Cited Kreyszig undo
• curprev 03:4103:41, 22 January 2023 Symphysy talk contribs 28,838 bytes +112 No edit summary undo
• curprev 03:3703:37, 22 January 2023 Symphysy talk contribs 28,726 bytes +92 Right shift operator is invertible, but not defined on dense set undo

23 November 2022

• curprev 07:5107:51, 23 November 2022 58.152.44.6 talk 28,634 bytes +36 No edit summary undo

28 October 2022

• curprev 08:0208:02, 28 October 2022 2a0d:6fc0:1d9d:ff00:a057:1b7c:fc41:af67 talk 28,598 bytes +8 →Relation to eigenvalues undo Tags: Mobile edit Mobile web edit

16 September 2022

• curprev 23:4923:49, 16 September 2022 StrokeOfMidnight talk contribs 28,590 bytes +68 →Classification of points in the spectrum: defined the term "bounded below", per Talk page undo

11 September 2022

• curprev 21:2121:21, 11 September 2022 2601:200:c000:1a0:243b:747:527e:21a1 talk 28,522 bytes −2 →Spectrum of an unbounded operator undo
• curprev 21:2021:20, 11 September 2022 2601:200:c000:1a0:243b:747:527e:21a1 talk 28,524 bytes +1 →Relation to eigenvalues undo
• curprev 13:2513:25, 11 September 2022 Ororon talk contribs 28,523 bytes +87 →Spectrum of the adjoint operator undo

16 June 2022

• curprev 06:2506:25, 16 June 2022 Reader634 talk contribs 28,436 bytes +3 No edit summary undo

7 April 2022

• curprev 15:2915:29, 7 April 2022 CoronalMassAffection talk contribs 28,433 bytes +53 Adding local short description: "Set of eigenvalues of a matrix", overriding Wikidata description "term used in functional analysis" (Shortdesc helper) undo

22 March 2022

• curprev 20:3020:30, 22 March 2022 Dewritech talk contribs m 28,380 bytes −4 clean up, typo(s) fixed: end result → result, … → ... undo Tag: AWB

7 October 2021

• curprev 01:3801:38, 7 October 2021 StrokeOfMidnight talk contribs 28,384 bytes −69 (1) Stated verbally that (T-λ)^{-1} must be everywhere defined, in order for λ to be in the resolvent set; (2) numerous style changes undo

3 October 2021

• curprev 16:2616:26, 3 October 2021 Hellacioussatyr talk contribs m 28,453 bytes −4 →Approximate point spectrum undo Tag: Visual edit

13 September 2021

• curprev 19:2619:26, 13 September 2021 163.118.51.53 talk 28,457 bytes +3 →Spectrum of the adjoint operator undo

29 August 2021

• curprev 08:5508:55, 29 August 2021 2001:7c7:2055:12e:2de5:7cd2:c20f:a7cc talk 28,454 bytes +18 Improve math mode undo

8 May 2021

• curprev 06:1206:12, 8 May 2021 Hellacioussatyr talk contribs 28,436 bytes +308 \C deprecated in favor of \Complex; inline markers; italics for lowercase greek undo Tag: 2017 wikitext editor

31 March 2021

• curprev 00:5000:50, 31 March 2021 Billlion talk contribs m 28,128 bytes +4 →Approximate point spectrum: the spectral theorem undo

23 January 2021

• curprev 14:3114:31, 23 January 2021 Monkbot talk contribs m 28,124 bytes +1 Task 18 (cosmetic): eval 1 template: hyphenate params (1×); undo Tag: AWB

7 November 2020

• curprev 11:0411:04, 7 November 2020 Citation bot talk contribs 28,123 bytes −100 Alter: url. URLs might have been internationalized/anonymized. | You can use this bot yourself. Report bugs here. | Suggested by AManWithNoPlan | All pages linked from cached copy of User:AManWithNoPlan/sandbox2 | via #UCB_webform_linked 2584/3977 undo

15 August 2020

• curprev 20:5420:54, 15 August 2020 FrescoBot talk contribs m 28,223 bytes −52 Bot: link specificity and minor changes undo

3 July 2020

• curprev 19:3919:39, 3 July 2020 Mgkrupa talk contribs 28,275 bytes +39 Added {{Math proof|drop=hidden|proof=}} undo

12 June 2020

• curprev 19:0619:06, 12 June 2020 Mgkrupa talk contribs m 28,236 bytes +21 Added {{Template:SpectralTheory}} undo

3 May 2020

• curprev 22:5522:55, 3 May 2020 Mgkrupa talk contribs m 28,215 bytes +4 Added internal link undo

17 March 2020

• curprev 06:1706:17, 17 March 2020 Taylanmath talk contribs 28,211 bytes +26 →Relation to eigenvalues undo

11 February 2020

• curprev 22:5922:59, 11 February 2020 Tarcisio talk contribs m 28,185 bytes +2 →Definition: it was missing the identy in the expression "T-\lambda I". Corrected! undo

31 December 2019

• curprev 18:0318:03, 31 December 2019 Kaltenmeyer talk contribs m 28,183 bytes −33 clean up undo Tag: AWB

16 November 2019

• curprev 00:4800:48, 16 November 2019 Comech talk contribs m 28,216 bytes −3 →Classification of points in the spectrum undo

15 November 2019

• curprev 21:5421:54, 15 November 2019 Comech talk contribs m 28,219 bytes +7 →Continuous spectrum undo

5 November 2019

• curprev 06:0206:02, 5 November 2019 Comech talk contribs 28,212 bytes +19 →Example: Hydrogen atom: minor edit undo

31 October 2019

• curprev 01:5301:53, 31 October 2019 Comech talk contribs 28,193 bytes +20 →Essential spectrum undo

30 October 2019

• curprev 10:4410:44, 30 October 2019 Comech talk contribs 28,173 bytes +116 →Essential spectrum: corrections undo
• curprev 10:1710:17, 30 October 2019 Comech talk contribs 28,057 bytes +2,674 →Essential spectrum: added examples undo

26 October 2019

• curprev 17:1517:15, 26 October 2019 Comech talk contribs m 25,383 bytes +152 No edit summary undo
• curprev 15:3315:33, 26 October 2019 Comech talk contribs 25,231 bytes +215 Minor edits to "Hydrogen atom"; changed it into a separate section. undo