Z-transform: Revision history

3 June 2024

• curprev 11:3611:36, 3 June 2024‎ Bob K talk contribs‎ 39,105 bytes +220‎ remove unused {EquationRef}} templates to resolve conflict between multiple Eq.4's undo
• curprev 09:3009:30, 3 June 2024‎ 134.214.188.164 talk‎ 38,885 bytes −125‎ It is NOT usual to replace z^-1 by s. "s" is commonly used as the Laplace variable and (as can be seen in the rest of the results in the page) is NOT equivalent. This will cause confusion. undo Tag: Visual edit

4 May 2024

• curprev 18:1818:18, 4 May 2024‎ 69.5.112.154 talk‎ 39,010 bytes −13‎ →‎Properties: x[\inty] is not really a thing. And changed some pareths to brackets to be consistent with the discrete signal notation using brackets for the integer argument. undo

26 March 2024

• curprev 12:0912:09, 26 March 2024‎ AWikiK44 talk contribs‎ m 39,023 bytes −1‎ No edit summary undo Tags: Visual edit Mobile edit Mobile web edit

22 March 2024

• curprev 18:5018:50, 22 March 2024‎ Bob K talk contribs‎ 39,024 bytes −1‎ Undid revision 1215005899 by 193.48.49.224 (talk) The meaning is that the normalized frequency w=2 pi is equivalent to the natural frequency f=1/T. undo Tag: Undo
• curprev 15:3115:31, 22 March 2024‎ 193.48.49.224 talk‎ 39,025 bytes +1‎ omega=2pi to omega=2pif undo Tags: Reverted Visual edit

8 February 2024

• curprev 22:2322:23, 8 February 2024‎ Mesoderm talk contribs‎ 39,024 bytes 0‎ →‎History undo
• curprev 22:2322:23, 8 February 2024‎ Mesoderm talk contribs‎ 39,024 bytes +1,903‎ →‎History: expanding on history section undo

20 December 2023

• curprev 17:2017:20, 20 December 2023‎ R'n'B talk contribs‎ m 37,121 bytes +18‎ Disambiguating links to Convergence (link changed to Convergent series) using DisamAssist. undo
• curprev 15:1115:11, 20 December 2023‎ DMH223344 talk contribs‎ 37,103 bytes +7‎ clarify complex undo Tag: Visual edit

2 December 2023

• curprev 21:0721:07, 2 December 2023‎ Headbomb talk contribs‎ 37,096 bytes +95‎ →‎External links: | Alter: template type. Add: class, date, title, authors 1-1. | Use this tool. Report bugs. | #UCB_Gadget undo
• curprev 21:0621:06, 2 December 2023‎ Headbomb talk contribs‎ 37,001 bytes +5‎ →‎top: ce undo

1 December 2023

• curprev 17:1017:10, 1 December 2023‎ Citation bot talk contribs‎ 36,996 bytes +27‎ Alter: chapter. | Use this bot. Report bugs. | Suggested by Headbomb | Linked from Wikipedia:WikiProject_Academic_Journals/Journals_cited_by_Wikipedia/Sandbox | #UCB_webform_linked 1255/1304 undo

22 October 2023

• curprev 23:3123:31, 22 October 2023‎ Tulanir talk contribs‎ m 36,969 bytes −3‎ grammar undo Tag: Visual edit

31 August 2023

• curprev 23:2123:21, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,972 bytes +52‎ →‎Region of convergence: {{See also}} crosslinking to another wikipedia article section that talks about this: Pole-zero plot#Discrete-time systems undo Tag: Visual edit
• curprev 05:4805:48, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,920 bytes +52‎ →‎Region of convergence: defining "region of convergence" in terms of "summation converges" wasn't terribly helpful...so I've added this parenthetical that expresses it without saying convergence: "(i.e. doesn't blow up in magnitude to infinity)" undo Tags: Visual edit Disambiguation links added
• curprev 05:4205:42, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,868 bytes +4‎ clarify/simplify mapping of s-domain and z-domain. Imaginary line was a little too vague. undo Tag: Visual edit
• curprev 05:0905:09, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,864 bytes +208‎ →‎Transfer function: I'm going to go ahead and explicitly state this notation convention of using capital letter of the corresponding lower case letter signal name for z-transform. Here is a good-enough place to state it. (The above parts of the article all use X, so this is the first time dealing with another letter.) undo Tag: Visual edit
• curprev 05:0205:02, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,656 bytes +156‎ →‎Definition: sortof need to say what capital Y(z) is, cause was never explicitly stated that capital letters are used to denote the z-transform of their lowercase discrete signal names. (Maybe somewhere should explicitly note this convention?) Hyperlinked transfer function. undo Tag: Visual edit
• curprev 04:3404:34, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,500 bytes +36‎ →‎Unilateral Z-transform: point to slink to these properties instead of just saying (below) undo Tag: Visual edit
• curprev 04:3304:33, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,464 bytes +11‎ →‎Bilateral Z-transform: actually I didn't mean to put a period in that equation. But I meant to put a period before when talk about polar form cause or else is too run on. undo Tag: Visual edit
• curprev 04:3004:30, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,453 bytes +3‎ →‎Bilateral Z-transform: need colon before these equations and period in them. undo Tag: Visual edit
• curprev 04:2604:26, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,450 bytes +40‎ →‎Bilateral Z-transform: actually better link for "polar form" is Polar coordinate system#Complex numbers, since it goes to a separate article than complex number. undo Tag: Visual edit
• curprev 04:2304:23, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,410 bytes +41‎ →‎Bilateral Z-transform: point to polar form so readers can know where to read more about this format if they are lost. undo Tag: Visual edit
• curprev 03:2003:20, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,369 bytes +10‎ →‎Properties: use \mathcal{Z}, not just Z undo Tag: Visual edit
• curprev 03:1803:18, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,359 bytes +16‎ →‎Properties: more spacing of nx undo Tag: Visual edit
• curprev 03:1603:16, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,343 bytes +31‎ →‎Properties: slight tweaking of the spacing used in these LaTeX formulas (e.g. nx[x] looks better as n x[n]) undo Tag: Visual edit
• curprev 03:1003:10, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,312 bytes +48‎ →‎Example 3 (anti causal ROC): to avoid the solving of this big equation getting too long (horizontally), I've enclosed it in an \begin{align} block so it goes down vertically with equals signs aligned. undo Tag: Visual edit
• curprev 03:0503:05, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,264 bytes −64‎ →‎Example 3 (anti causal ROC): shorten these captions by using () to denote how it is being shown without saying "shown" or "as a". undo Tag: Visual edit
• curprev 02:5802:58, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,328 bytes +52‎ →‎Example 3 (anti causal ROC): change this example formatting to use (.5)^n so is easier to read than 0.5^n undo Tag: Visual edit
• curprev 02:5002:50, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,276 bytes −38‎ →‎Example 1 (no ROC): actually instead of 0.5^n and instead of (1/2)^n which also didn't look nice, I'm finding that doing (.5)^n instead is actually readable. undo Tag: Visual edit
• curprev 02:3802:38, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,314 bytes +141‎ →‎Example 1 (no ROC): write instances of 0.5^n as (1/2)^n with \tfrac for better readability undo Tag: Visual edit
• curprev 02:3502:35, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,173 bytes +116‎ →‎Properties: more LaTeX formatting of math in text. undo Tag: Visual edit
• curprev 02:1002:10, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,057 bytes −1‎ →‎Properties undo Tag: Visual edit
• curprev 02:0902:09, 31 August 2023‎ Em3rgent0rdr talk contribs‎ 36,058 bytes +185‎ format variables & equations as LaTeX consistently when in text. (This edit hasn't changed any meanings, just formatting). undo Tag: Visual edit

17 August 2023

• curprev 00:2600:26, 17 August 2023‎ Em3rgent0rdr talk contribs‎ 35,873 bytes +125‎ →‎Properties: this first entry was a little confusing, because it had time-domain notation in the Z-domain column and had z-domain notation in the time-domain column. I've renamed it to simply be "Definition of Z-transform" and put the actual equation for the notation of Z-transform and inverse as proof column and saying "by definition". Now the top header can call the entire first column to be "Property" undo Tag: Visual edit
• curprev 00:0600:06, 17 August 2023‎ Em3rgent0rdr talk contribs‎ 35,748 bytes +47‎ →‎Properties: I'm clarifying that this differentiation is "in the z-domain". Because all of these other properties listed are implicitly "in the time domain" if not stated "in the z-domain". (The closest thing to "differentiation" in the time-domain would be First difference backwards or forwards...sometimes "differentiation" refers to that...so emphasize "in the z-domain" here for clarity.) undo Tag: Visual edit

28 July 2023

• curprev 04:1804:18, 28 July 2023‎ Fgnievinski talk contribs‎ 35,701 bytes −77‎ WP:DABRELATED undo

13 July 2023

• curprev 16:2716:27, 13 July 2023‎ Em3rgent0rdr talk contribs‎ m 35,778 bytes +4‎ hyperlinked undo Tag: Visual edit

16 June 2023

• curprev 08:5508:55, 16 June 2023‎ 2001:620:618:588:2:80b3:0:3d0 talk‎ 35,774 bytes +16‎ Changed first difference forward to have math blocks undo

30 January 2023

• curprev 00:1500:15, 30 January 2023‎ Quondum talk contribs‎ 35,758 bytes +134‎ fmt undo
• curprev 00:0200:02, 30 January 2023‎ Quondum talk contribs‎ m 35,624 bytes −6‎ →‎Starred transform: markup undo

23 October 2022

• curprev 04:0104:01, 23 October 2022‎ Citation bot talk contribs‎ 35,630 bytes +148‎ Add: bibcode, s2cid, volume, series. | Use this bot. Report bugs. | Suggested by Whoop whoop pull up | #UCB_webform 809/3485 undo

17 October 2022

• curprev 02:5102:51, 17 October 2022‎ Hunan201p talk contribs‎ 35,482 bytes −1‎ No edit summary undo

24 August 2022

• curprev 08:1008:10, 24 August 2022‎ Nick Levine talk contribs‎ m 35,483 bytes −702‎ Reverted 1 edit by 103.80.117.105 (talk) to last revision by Salix alba undo Tags: Twinkle Undo
• curprev 07:0307:03, 24 August 2022‎ 103.80.117.105 talk‎ 36,185 bytes +702‎ very good good undo Tags: Reverted nowiki added Incorrectly formatted external link or image Visual edit
• curprev 05:0005:00, 24 August 2022‎ Salix alba talk contribs‎ m 35,483 bytes −212‎ Reverted edits by 2409:4061:4E83:841E:0:0:CE4A:4809 (talk) to last version by Hellacioussatyr undo Tag: Rollback

23 August 2022

• curprev 18:0918:09, 23 August 2022‎ 2409:4061:4e83:841e::ce4a:4809 talk‎ 35,695 bytes +212‎ →‎Example 3 (anti causal ROC): 1wNaonaa l1 undo Tags: Reverted Mobile edit Mobile web edit

3 July 2022

• curprev 09:2509:25, 3 July 2022‎ Hellacioussatyr talk contribs‎ 35,483 bytes +123‎ →‎Relationship to Laplace transform undo Tag: Visual edit

2 July 2022

• curprev 09:3909:39, 2 July 2022‎ Euphemistically talk contribs‎ 35,360 bytes +588‎ →‎top: Adding/improving reference(s) undo