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User talk:Oleg Alexandrov: Difference between revisions

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. I will reply ''on this page'', under your post. . I will reply ''on this page'', under your post.

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== Gauss–Newton algorithm == == Mathbot down ==

Hi Oleg. Just a heads-up that Mathbot hasn't run in over 24 hours. I'm guessing that this is related to ], for what it's worth. ] (]) 06:31, 21 December 2023 (UTC)

:He is inactive for a long time, with fewer than 50 edits last year. <span style="background-color:#50D246;font-family:cambria">]</span><sup>(])</sup> 03:20, 23 December 2023 (UTC)

⚫ :: I will take a look tomorrow. ] (]) 03:35, 23 December 2023 (UTC)
⚫ :::: I migrated the bot to the new way of doing things. Thank you for your note. I will keep an eye on it for a while. ] (]) 20:52, 23 December 2023 (UTC)
== "]" listed at ] ==
]
The redirect <span class="plainlinks"></span> has been listed at ] to determine whether its use and function meets the ]. Anyone, including you, is welcome to comment on this redirect at '''{{slink|Misplaced Pages:Redirects for discussion/Log/2024 January 31#Integration with other techniques}}''' until a consensus is reached. <!-- Template:RFDNote --> ] (]) 21:04, 31 January 2024 (UTC)


== Your comment on De Moivre Talk Page ==
I found R very useful. I would appreciate if you could improve the readability, but its nice to have a working computer example as a basis for coding. Please don't remove, but feel free to improve. <small>—Preceding ] comment added by ] (]) 18:19, 8 September 2008 (UTC)</small><!-- Template:UnsignedIP --> <!--Autosigned by SineBot-->
: Misplaced Pages is not a put-here-everything kind of thing. That code adds nothing at all really, it is not even a properly written algorithm, but more a "how I can reword this article from plain English and math to using R". You're very welcome to do that kind of exercise on the side, but it adds nothing to the article. ] (]) 20:05, 14 September 2008 (UTC)


On the De Moivre Talk page you say:
== hi ==


By De Moivre's formula:
hi oleg. I am interested in non-linear differential equations. Is there a thread on this anywhere?


:<math>(-1)^{1/2} = \left(\cos \pi + i \sin \pi\right)^{1/2} =\cos \frac {\pi}{2} + i \sin \frac{\pi}{2}= i\,</math>
] (]) 22:43, 17 September 2008 (UTC)


but also
:We do not have threads for general discussion of topics. However, talk pages dedicated to improving an article or group of articles do exist. You might want to look at ]. ] (]) 03:47, 18 September 2008 (UTC)
:<math>(-1)^{1/2} = \left(\cos 3\pi + i \sin 3\pi\right)^{1/2} =\cos \frac {3\pi}{2} + i \sin \frac{3\pi}{2}= -i\,</math>


so you get two different answers which is not good.
== Square root of sum of squares? ==


Why do you think it is not good that there are two square roots. Is it also 'not good' that, for example, 3 has two square roots? Can you please explain why it's not good?] (]) 18:01, 5 February 2024 (UTC)
Hi Oleg,
== Nomination of ] for deletion ==
<div class="afd-notice">
<div class="floatleft" style="margin-bottom:0">]</div>A discussion is taking place as to whether the article ] is suitable for inclusion in Misplaced Pages according to ] or whether it should be ].


The article will be discussed at ''']''' until a consensus is reached, and anyone, including you, is welcome to contribute to the discussion. The nomination will explain the policies and guidelines which are of concern. The discussion focuses on high-quality evidence and our policies and guidelines.
I am trying to implement Gauss Newton, based on the Misplaced Pages article:


Users may edit the article during the discussion, including to improve the article to address concerns raised in the discussion. However, do not remove the article-for-deletion notice from the top of the article until the discussion has finished.<!-- Template:Afd notice --></div> ] 15:23, 4 March 2024 (UTC)
http://en.wikipedia.org/Gauss%E2%80%93Newton_algorithm
== "]" listed at ] ==
]
The redirect <span class="plainlinks"></span> has been listed at ] to determine whether its use and function meets the ]. Anyone, including you, is welcome to comment on this redirect at '''{{slink|Misplaced Pages:Redirects for discussion/Log/2024 March 28#Hilbert Spaces and Fourier analysis}}''' until a consensus is reached. <!-- Template:RFDNote --> ]]] 01:32, 28 March 2024 (UTC)


==Concern regarding ]==
and I thought that I should at least make sure that I can do the example. I used an Excel spread sheet to duplicate the algorithm given in the article. (It is amazing how poor the Excel math routines are!) In the example section, near the bottom, it says:
] Hello, Oleg Alexandrov. This is a bot-delivered message letting you know that ], a page you created, has not been edited in at least 5 months. Drafts that have not been edited for six months ], so if you wish to retain the page, please ] again&#32;or ] that it be moved to your userspace.


If the page has already been deleted, you can ] so you can continue working on it.
"The sum of squares of residuals decreased from the initial value of 1.202 to 0.0886 after the fifth iteration."


Thank you for your submission to Misplaced Pages. ] (]) 14:07, 22 August 2024 (UTC)
When I calculate the initial value for "sum of squares of residuals", I get 1.445497... I have to take the "square root" of that value to get the same number as stated in the article. (Then I get 1.202288.)
: I wiped that page and reinstated the redirect from ] to what was there before. This was somebody's abandoned scratch work. They can request getting it back if need be. ] (]) 15:58, 22 August 2024 (UTC)
== "]" listed at ] ==
]
The redirect <span class="plainlinks"></span> has been listed at ] to determine whether its use and function meets the ]. Anyone, including you, is welcome to comment on this redirect at '''{{slink|Misplaced Pages:Redirects for discussion/Log/2024 September 7#Simple zero}}''' until a consensus is reached. <!-- Template:RFDNote --> ]]] 16:20, 7 September 2024 (UTC)


== Invitation to participate in a research ==
Is the article wrong, or am I wrong?


Hello,
Thanks,


The Wikimedia Foundation is conducting a survey of Wikipedians to better understand what draws administrators to contribute to Misplaced Pages, and what affects administrator retention. We will use this research to improve experiences for Wikipedians, and address common problems and needs. We have identified you as a good candidate for this research, and would greatly appreciate your participation in this ''''''.
Mike
--] (]) 20:15, 20 September 2008 (UTC)
⚫ : You are right, in the code used to generate those numbers I was plotting the norm of the residual, so there was an extra square root. I fixed that now. Thanks. ] (]) 08:56, 21 September 2008 (UTC)


You do not have to be an Administrator to participate.
== Mathbot missing? ==


The survey should take around 10-15 minutes to complete. You may read more about the study on its ] and view its ] .
I was trying to the list of old open AfDs, and got an error stating that "The requested URL /~mathbot/cgi-bin/wp/afd/afd.cgi was not found on this server." Did something happen to Mathbot? ···]<sup>] · <small>]</sup></small> 19:13, 4 October 2008 (UTC)
: Now it works. I guess the server was down. ] (]) 21:38, 5 October 2008 (UTC)


Please find our contact on the project Meta page if you have any questions or concerns.
== Typoes in Mathbot's edit summaries ==


Kind Regards,
In ], Mathbot says "There are 0 open discusions in 1 days". The word "discusion" should be "discussion" with the extra "s", and it should probably say "1 day" instead of "1 days". ''']'''<font color="green">]</font> 16:03, 24 October 2008 (UTC)
: I modified the text to say


]
:: "There are 0 open discusion(s) in 1 day(s)"


: Not perfect, but that's just a bot report page, could be good enough. :) ] (]) 23:30, 1 November 2008 (UTC) <bdi lang="en" dir="ltr">] (]) 19:22, 23 October 2024 (UTC) </bdi>
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== Reminder to participate in Misplaced Pages research ==
== Gandalf's antics ==


Hello,
Hi Oleg, user Gandalf found it fit to recommend my new article ] for incorporation on the day it was created, and is now giving me a hard time at ] based on a mathematical error. Could you please comment? ] (]) 10:07, 27 October 2008 (UTC)
: I see a pretty lively discussion at ]. I hope it goes well. Usually, if you want input from other editors, you can try asking at ]. Cheers, ] (]) 23:34, 1 November 2008 (UTC)


I recently invited you to take a survey about administration on Misplaced Pages. If you haven’t yet had a chance, there is still time to participate– we’d truly appreciate your feedback. The survey is anonymous and should take about 10-15 minutes to complete. You may read more about the study on its ] and view its ].
== Nice exponential function graph! ==


Take the survey ''''''.
Hi. Excellent work with ]! I feel it truly adds to the ] article as it makes it much easier to understand. Keep up the good work! Greetings from ], Greece. --] (]) 14:43, 30 October 2008 (UTC).
⚫ : You're welcome. :) ] (]) 23:35, 1 November 2008 (UTC)


Kind Regards,
== Misplaced Pages's Expert Peer Review process (or lack of such) for Science related articles ==


]
Hi - I posted the section with the same name on my talk page.
Could you take part in discussion ?
User: Shotwell suggested (on my talk page)
"I would endorse a WP:EXPERTADVICE page that outlined the wikipedia policies and goals for researchers in a way that enticed them to edit here in an appropriate fashion. Perhaps a well-maintained list of expert editors with institutional affiliation would facilitate this sort of highly informal review process. I don't think anyone would object to a well-maintained list of highly-qualified researchers with institutional affiliation (but then again, everyone seems to object to something)."
We could start with that if you would agree ...
- could you help to push his idea through Misplaced Pages bureaucracy ?
Cheers,
] (]) 15:47, 1 November 2008 (UTC)


<bdi lang="en" dir="ltr">] (]) 00:17, 13 November 2024 (UTC) </bdi>
==Arbcom Elections 2008==
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Good afternoon, Oleg. It's a slow day for me today, so I'm running through my checklist of Arbcom Election items for next month's voting. I know Mathbot has updated voting data for the last three elections, and I wanted to check and see if you planned to run it again this time around. If that's the case, is there any assistance I can provide in formatting vote pages / setting up templates / etc? Thanks in advance, ] <sup> ] </sup>~<small> ] </small> 18:12, 4 November 2008 (UTC)

Latest revision as of 00:17, 13 November 2024

Write a new message. I will reply on this page, under your post.

Archive: 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Mathbot down

Hi Oleg. Just a heads-up that Mathbot hasn't run in over 24 hours. I'm guessing that this is related to wikitech:News/Toolforge Grid Engine deprecation, for what it's worth. Extraordinary Writ (talk) 06:31, 21 December 2023 (UTC)

He is inactive for a long time, with fewer than 50 edits last year. Just a random Wikipedian 03:20, 23 December 2023 (UTC)
I will take a look tomorrow. Oleg Alexandrov (talk) 03:35, 23 December 2023 (UTC)
I migrated the bot to the new way of doing things. Thank you for your note. I will keep an eye on it for a while. Oleg Alexandrov (talk) 20:52, 23 December 2023 (UTC)

"Integration with other techniques" listed at Redirects for discussion

The redirect Integration with other techniques has been listed at redirects for discussion to determine whether its use and function meets the redirect guidelines. Anyone, including you, is welcome to comment on this redirect at Misplaced Pages:Redirects for discussion/Log/2024 January 31 § Integration with other techniques until a consensus is reached. Steel1943 (talk) 21:04, 31 January 2024 (UTC)

Your comment on De Moivre Talk Page

On the De Moivre Talk page you say:

By De Moivre's formula:

( − 1 ) 1 / 2 = ( cos ⁡ π + i sin ⁡ π ) 1 / 2 = cos ⁡ π 2 + i sin ⁡ π 2 = i {\displaystyle (-1)^{1/2}=\left(\cos \pi +i\sin \pi \right)^{1/2}=\cos {\frac {\pi }{2}}+i\sin {\frac {\pi }{2}}=i\,}

but also

( − 1 ) 1 / 2 = ( cos ⁡ 3 π + i sin ⁡ 3 π ) 1 / 2 = cos ⁡ 3 π 2 + i sin ⁡ 3 π 2 = − i {\displaystyle (-1)^{1/2}=\left(\cos 3\pi +i\sin 3\pi \right)^{1/2}=\cos {\frac {3\pi }{2}}+i\sin {\frac {3\pi }{2}}=-i\,}

so you get two different answers which is not good.

Why do you think it is not good that there are two square roots. Is it also 'not good' that, for example, 3 has two square roots? Can you please explain why it's not good?37.228.204.111 (talk) 18:01, 5 February 2024 (UTC)

Nomination of Christmas in the Park (San Jose) for deletion

A discussion is taking place as to whether the article Christmas in the Park (San Jose) is suitable for inclusion in Misplaced Pages according to Misplaced Pages's policies and guidelines or whether it should be deleted.

The article will be discussed at Misplaced Pages:Articles for deletion/Christmas in the Park (San Jose) (2nd nomination) until a consensus is reached, and anyone, including you, is welcome to contribute to the discussion. The nomination will explain the policies and guidelines which are of concern. The discussion focuses on high-quality evidence and our policies and guidelines.

Users may edit the article during the discussion, including to improve the article to address concerns raised in the discussion. However, do not remove the article-for-deletion notice from the top of the article until the discussion has finished.

User:Namiba 15:23, 4 March 2024 (UTC)

"Hilbert Spaces and Fourier analysis" listed at Redirects for discussion

The redirect Hilbert Spaces and Fourier analysis has been listed at redirects for discussion to determine whether its use and function meets the redirect guidelines. Anyone, including you, is welcome to comment on this redirect at Misplaced Pages:Redirects for discussion/Log/2024 March 28 § Hilbert Spaces and Fourier analysis until a consensus is reached. 1234qwer1234qwer4 01:32, 28 March 2024 (UTC)

Concern regarding Draft:Hardy-Littlewood constant

Information icon Hello, Oleg Alexandrov. This is a bot-delivered message letting you know that Draft:Hardy-Littlewood constant, a page you created, has not been edited in at least 5 months. Drafts that have not been edited for six months may be deleted, so if you wish to retain the page, please edit it again or request that it be moved to your userspace.

If the page has already been deleted, you can request it be undeleted so you can continue working on it.

Thank you for your submission to Misplaced Pages. FireflyBot (talk) 14:07, 22 August 2024 (UTC)

I wiped that page and reinstated the redirect from Hardy-Littlewood constant to what was there before. This was somebody's abandoned scratch work. They can request getting it back if need be. Oleg Alexandrov (talk) 15:58, 22 August 2024 (UTC)

"Simple zero" listed at Redirects for discussion

The redirect Simple zero has been listed at redirects for discussion to determine whether its use and function meets the redirect guidelines. Anyone, including you, is welcome to comment on this redirect at Misplaced Pages:Redirects for discussion/Log/2024 September 7 § Simple zero until a consensus is reached. 1234qwer1234qwer4 16:20, 7 September 2024 (UTC)

Invitation to participate in a research

Hello,

The Wikimedia Foundation is conducting a survey of Wikipedians to better understand what draws administrators to contribute to Misplaced Pages, and what affects administrator retention. We will use this research to improve experiences for Wikipedians, and address common problems and needs. We have identified you as a good candidate for this research, and would greatly appreciate your participation in this anonymous survey.

You do not have to be an Administrator to participate.

The survey should take around 10-15 minutes to complete. You may read more about the study on its Meta page and view its privacy statement .

Please find our contact on the project Meta page if you have any questions or concerns.

Kind Regards,

WMF Research Team

BGerdemann (WMF) (talk) 19:22, 23 October 2024 (UTC)

Reminder to participate in Misplaced Pages research

Hello,

I recently invited you to take a survey about administration on Misplaced Pages. If you haven’t yet had a chance, there is still time to participate– we’d truly appreciate your feedback. The survey is anonymous and should take about 10-15 minutes to complete. You may read more about the study on its Meta page and view its privacy statement.

Take the survey here.

Kind Regards,

WMF Research Team

BGerdemann (WMF) (talk) 00:17, 13 November 2024 (UTC)