Divisor function: Revision history

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curprev 08:2208:22, 8 January 2024‎ Mkapkic talk contribs‎ m 27,066 bytes +22‎ That property only work on sigma sub 1 undo Tag: Visual edit: Switched

curprev 04:0804:08, 8 October 2023‎ Bubba73 talk contribs‎ m 27,044 bytes +2‎ →‎Growth rate undo
curprev 00:3400:34, 8 October 2023‎ Bubba73 talk contribs‎ m 27,042 bytes +8‎ →‎Table of values undo

curprev 22:5122:51, 10 August 2023‎ 105.157.178.102 talk‎ 27,034 bytes −4‎ The "Guy Robin" math page is not actually a wiki page for the mathematician Guy Robin, but the page of an English DJ Guy Robin undo Tag: Visual edit

curprev 22:2622:26, 2 August 2023‎ 181.60.110.129 talk‎ 27,038 bytes +12‎ I changed d(n) by \sigma_0(n) undo

curprev 03:5603:56, 12 June 2023‎ GalacticShoe talk contribs‎ 27,026 bytes 0‎ →‎Other properties and identities: Capitalization undo

curprev 14:1614:16, 21 January 2023‎ Citation bot talk contribs‎ 27,026 bytes +55‎ Add: issue, url. | Use this bot. Report bugs. | Suggested by Corvus florensis | #UCB_webform 969/1746 undo
curprev 12:5812:58, 21 January 2023‎ JDAWiseman talk contribs‎ 26,971 bytes +32‎ →‎Growth rate undo

curprev 09:0809:08, 22 December 2022‎ 192.38.129.8 talk‎ 26,939 bytes +471‎ →‎Example: example with sigma_{-1} undo

curprev 19:0219:02, 15 December 2022‎ 132.62.172.114 talk‎ 26,468 bytes +1‎ →‎Other properties and identities: +, undo

curprev 17:3717:37, 30 October 2022‎ 2a00:1028:8b43:3f76:450e:d8d1:d414:424b talk‎ 26,467 bytes +64‎ →‎Series relations: Clarification undo

curprev 15:1615:16, 9 October 2022‎ David Eppstein talk contribs‎ 26,403 bytes +747‎ →‎Formulas at prime powers: Fermi–Dirac primes undo
curprev 06:1406:14, 9 October 2022‎ Spacetime02 talk contribs‎ 25,656 bytes 0‎ The article previously said the sum of divisors of the nth primorial was 2^n, which is untrue (p1# = 2, which has divisor sum 3). This edit corrects that to the number of divisors of the nth primorial. undo

curprev 11:1511:15, 28 September 2022‎ 190.122.186.199 talk‎ 25,656 bytes 0‎ →‎Growth rate undo Tag: Visual edit
curprev 09:5509:55, 28 September 2022‎ 190.122.186.199 talk‎ 25,656 bytes 0‎ →‎Formulas at prime powers undo Tag: Visual edit

curprev 11:4711:47, 4 April 2022‎ MFH talk contribs‎ 25,656 bytes 0‎ →‎Definition: it is weird to use x as subscript / exponent. Any serious number theorist would use rather k. Now I get that author wants to hint that it's not required to be integer... Maybe we can use z? undo

curprev 14:4414:44, 21 March 2022‎ RedstoneDave talk contribs‎ 25,656 bytes +49‎ →‎Formulas at prime powers: a sketch of proof undo

curprev 02:0102:01, 10 March 2022‎ 71.231.185.165 talk‎ 25,607 bytes −3‎ →‎Other properties and identities: Fixed typo, sigma is zero only for negative numbers undo Tags: Mobile edit Mobile web edit
curprev 01:5601:56, 10 March 2022‎ 71.231.185.165 talk‎ 25,610 bytes 0‎ →‎Other properties and identities: Fixed typo, only sum natural i undo Tags: Mobile edit Mobile web edit

curprev 03:1903:19, 26 February 2022‎ Goudron talk contribs‎ 25,610 bytes +134‎ →‎Other properties and identities: p < q ⇒ p ≠ q, verbal clarification is superfluous; 2^k is not an "example" but a defining predicate with a free variable {{mvar|k}}; clarify the pairwise use of *generalized* pentagonal numbers in Euler's recurrence; fix a dead URL to Euler archive; minor copy-ed; canonicalize mark up only unmarked math in text only, the minimum for immediate readability, per WP:MATH. undo
curprev 01:4901:49, 26 February 2022‎ David Eppstein talk contribs‎ 25,476 bytes +286‎ supply requested citation undo
curprev 01:4101:41, 26 February 2022‎ Bubba73 talk contribs‎ 25,190 bytes +11‎ Undid revision 1074032972 by Goudron (talk) it is twice a square, not square of a square undo Tag: Undo
curprev 01:3301:33, 26 February 2022‎ Goudron talk contribs‎ 25,179 bytes −11‎ →‎Other properties and identities: Every square of a square is also a square, so ((square || square-of-a-square) <=> square), the "or" term does not expand the domain of the constraint. Looking for a missing citation...- undo Tag: Reverted

curprev 01:5301:53, 25 December 2021‎ Japm48 talk contribs‎ 25,190 bytes +300‎ →‎Formulas at prime powers: Explain further an imporant result undo

curprev 17:5817:58, 22 December 2021‎ Anita5192 talk contribs‎ 24,890 bytes +2‎ Undid revision 1061596628 by Wevrem (talk) This was correct before. The divisor function is only defined for integers. undo Tag: Undo
curprev 17:4017:40, 22 December 2021‎ Wevrem talk contribs‎ 24,888 bytes −2‎ fixed error in the "where" conditions of Euler's recurrence: sigma(x)=0 if x<0, _not_ if x<=0 as was originally stated. undo Tags: Reverted Visual edit: Switched

curprev 15:4715:47, 26 November 2021‎ 216.24.45.23 talk‎ 24,890 bytes −7‎ →‎Other properties and identities: simplify undo

curprev 06:2906:29, 14 September 2021‎ Cedar101 talk contribs‎ m 24,897 bytes +15‎ →‎Table of values: text-align:right; {{sigma}} undo

curprev 09:4509:45, 24 August 2021‎ 2a00:23c4:4e9f:d101:6087:25ef:480e:1976 talk‎ 24,882 bytes +3‎ →‎Series relations undo

curprev 13:5813:58, 20 August 2021‎ 164.52.242.130 talk‎ 24,879 bytes −37‎ stale tag, most specific formulas have inline footnotes, and general references do suffice for most of this undo
curprev 13:4413:44, 20 August 2021‎ 164.52.242.130 talk‎ 24,916 bytes +114‎ →‎Series relations: due to Ramanujan, add link to Rankin–Selberg method undo

curprev 09:3209:32, 17 August 2021‎ 2a00:23c4:4e9f:d101:39e6:989:c70e:8a59 talk‎ 24,802 bytes 0‎ →‎See also undo

curprev 18:2718:27, 30 May 2021‎ Of the universe talk contribs‎ m 24,802 bytes +45‎ →‎Formulas at prime powers: math formatting undo Tag: Visual edit: Switched
curprev 18:1818:18, 30 May 2021‎ Of the universe talk contribs‎ m 24,757 bytes +115‎ →‎Formulas at prime powers: why template undo Tag: Visual edit

curprev 18:4518:45, 4 May 2021‎ Citation bot talk contribs‎ 24,642 bytes +51‎ Add: s2cid. | Use this bot. Report bugs. | Suggested by Headbomb | Linked from Wikipedia:WikiProject_Academic_Journals/Journals_cited_by_Wikipedia/Sandbox | #UCB_webform_linked 242/999 undo

curprev 22:3022:30, 11 March 2021‎ YoshiGosu talk contribs‎ 24,591 bytes −70‎ →‎Other properties and identities: I think the equation using the delta function was wrong. (and it doesn't appear in ref) undo Tag: Visual edit

curprev 17:3117:31, 8 January 2021‎ Monkbot talk contribs‎ m 24,661 bytes +3‎ Task 18 (cosmetic): eval 14 templates: hyphenate params (3×); undo Tag: AWB

curprev 09:1809:18, 31 August 2020‎ 212.17.33.98 talk‎ 24,658 bytes +4‎ →‎Other properties and identities undo

curprev 17:0117:01, 27 July 2020‎ TdanTce talk contribs‎ 24,654 bytes +1‎ →‎Table of values undo
curprev 17:0117:01, 27 July 2020‎ TdanTce talk contribs‎ 24,653 bytes +1‎ →‎Table of values undo
curprev 17:0017:00, 27 July 2020‎ TdanTce talk contribs‎ 24,652 bytes +26‎ →‎Table of values: changed "-" to "×" undo

curprev 01:5401:54, 23 June 2020‎ BHGbot talk contribs‎ m 24,626 bytes 0‎ WP:BHGbot 6 (List 5): eponymous category first, per MOS:CATORDER; WP:GENFIXES undo Tag: AWB

curprev 10:0510:05, 11 June 2020‎ Nadzik talk contribs‎ m 24,626 bytes −6‎ outdated HTML elements undo

curprev 09:3509:35, 15 May 2020‎ Beland talk contribs‎ m 24,632 bytes −196‎ convert special characters (via WP:JWB) undo

curprev 16:2916:29, 17 April 2020‎ OAbot talk contribs‎ m 24,828 bytes +18‎ Open access bot: doi added to citation with #oabot. undo

curprev 10:0110:01, 3 April 2020‎ The Eloquent Peasant talk contribs‎ 24,810 bytes +80‎ Adding short description: "Arithmetic function related to the divisors of an integer" (Shortdesc helper) undo

curprev 01:2301:23, 1 March 2020‎ Anita5192 talk contribs‎ m 24,730 bytes −15‎ Reverted edits by 173.70.52.216 (talk) to last version by 2001:770:10:300:0:0:86E2:510C undo Tag: Rollback
curprev 01:1001:10, 1 March 2020‎ 173.70.52.216 talk‎ 24,745 bytes +15‎ No edit summary undo Tag: extraneous markup

curprev 22:3022:30, 22 February 2020‎ 2001:770:10:300::86e2:510c talk‎ 24,730 bytes +124‎ →‎Other properties and identities undo

curprev 13:3313:33, 7 February 2020‎ Kaylier talk contribs‎ m 24,606 bytes +17‎ Fix a minor math error undo

Divisor function: Revision history

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