User talk:AugPi

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File source problem with File:Moebius strip ROT13.PNG

Thank you for uploading File:Moebius strip ROT13.PNG. I noticed that the file's description page currently doesn't specify who created the content, so the copyright status is unclear. If you did not create this file yourself, you will need to specify the owner of the copyright. If you obtained it from a website, please add a link to the website from which it was taken, together with a brief restatement of that website's terms of use of its content. However, if the copyright holder is a party unaffiliated from the website's publisher, that copyright should also be acknowledged.

If you have uploaded other files, consider verifying that you have specified sources for those files as well. You can find a list of files you have created in your upload log. Unsourced and untagged images may be deleted one week after they have been tagged per Wikipedia's criteria for speedy deletion, F4. If the image is copyrighted and non-free, the image will be deleted 48 hours after 07:12, 26 May 2010 (UTC) per speedy deletion criterion F7. If you have any questions or are in need of assistance please ask them at the Media copyright questions page. Thank you. FASTILY_sock^(TALK) 07:12, 26 May 2010 (UTC)

I created this file myself and I have just now indicated so in the file's description page. —AugPi _(t) 14:10, 26 May 2010 (UTC)

File source problem with File:Dissection of Klein bottle ROT13.PNG

Thank you for uploading File:Dissection of Klein bottle ROT13.PNG. I noticed that the file's description page currently doesn't specify who created the content, so the copyright status is unclear. If you did not create this file yourself, you will need to specify the owner of the copyright. If you obtained it from a website, please add a link to the website from which it was taken, together with a brief restatement of that website's terms of use of its content. However, if the copyright holder is a party unaffiliated from the website's publisher, that copyright should also be acknowledged.

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Likewise for this image. —AugPi _(t) 14:12, 26 May 2010 (UTC)

You are now a Reviewer

Hello. Your account has been granted the "reviewer" userright, allowing you to review other users' edits on certain flagged pages. Pending changes, also known as flagged protection, is currently undergoing a two-month trial scheduled to end 15 August 2010.

Reviewers can review edits made by users who are not autoconfirmed to articles placed under pending changes. Pending changes is applied to only a small number of articles, similarly to how semi-protection is applied but in a more controlled way for the trial. The list of articles with pending changes awaiting review is located at Special:OldReviewedPages.

When reviewing, edits should be accepted if they are not obvious vandalism or BLP violations, and not clearly problematic in light of the reason given for protection (see Wikipedia:Reviewing process). More detailed documentation and guidelines can be found here.

If you do not want this userright, you may ask any administrator to remove it for you at any time. Courcelles (talk) 04:56, 20 June 2010 (UTC)

• Thank you! I'll have to check out Wikipedia:Reviewing process: see what this is all about. —AugPi _(t) 08:29, 26 June 2010 (UTC)

• Ok, so I see an Accept button, and there is a greyed-out Unaccept button, which means that I can't Unaccept, though I can revert vandalism that has already occurred by making a corrective edit and then Accepting my own edit... so maybe I'm beginning to understand how this works... —AugPi _(t) 08:53, 26 June 2010 (UTC)

Quarter-comma meantone construction

Hi AugPi, I discovered from the revision history of Meantone temperament, that you are the author of the sections "Construction of the diatonic scale", and "Construction of the chromatic scale", that have been moved later to a separate article: Quarter-comma meantone (see here and here). I have been editing the article, and I was wondering if you could help me to fully understand your rationale, so that I can respect your decisions as much as possible.

You selected a scale starting from C (i.e., what I would call a "C-based" scale), which cannot be built from a "symmetric" C-based stack of fifths (where "symmetric" means with the base note C at its center):

• C-based symmetric: G♭—D♭—A♭—E♭—B♭—F—C—G—D—A—E—B—F♯

It can only be built from this "asymmetric" C-based stack of fifths (with C out of center):

• C-based asymmetric: A♭—E♭—B♭—F—C—G—D—A—E—B—F♯—C♯—G♯

Approximate size in cents of the 156 intervals in quarter-comma meantone tuning. Interval names are given in their standard shortened form. Pure intervals are shown in bold font.

I am explaining this because using an asymmetric stack has important drawbacks: for instance, one of the intervals in your scale (C-G♯) is a "wolf" minor sixth, severely out-of tune (by about 41 cents from its just intonation)! And another interval (C-C♯) is a minor second the size of which is not frequently observed in the other 11 minor seconds starting from the other notes of the same scale. You can see this in my table on the right, which shows all the intervals which can be built from your C-based asymmetric scale. By the way, the minor sixth is the inversion of the major third, so in quarter-comma meantone, the very purpose of which is to provide justly intonated major thirds, the minor sixth is supposed to be justly intonated as well.

A symmetric scale, on the other hand, would not have these drawbacks. In my table, for instance, the scale starting from D can be obtained from a symmetric stack of fifths, centered at D:

• D-based symmetric: A♭—E♭—B♭—F—C—G—D—A—E—B—F♯—C♯—G♯

And you can see that it contains no wolfs, provides a justly intonated minor sixth, and is the only scale which contains ALL the most often observed intervals. Of course, a C-based symmetric scale would also be ok (not shown in my table). So, I would suggest either

1. A D-based symmetric scale

2. A C-based symmetric scale

This article, however, shows:

3. A C-based asymmetric scale (see here)

Were you aware of these drawbacks? Would you support my suggestion?

--Paolo.dL (talk) 12:44, 16 July 2010 (UTC)

File source problem with File:Moebius strip ROT13.PNG

Thank you for uploading File:Moebius strip ROT13.PNG. I noticed that the file's description page currently doesn't specify who created the content, so the copyright status is unclear. If you did not create this file yourself, you will need to specify the owner of the copyright. If you obtained it from a website, please add a link to the website from which it was taken, together with a brief restatement of that website's terms of use of its content. However, if the copyright holder is a party unaffiliated from the website's publisher, that copyright should also be acknowledged.

If you have uploaded other files, consider verifying that you have specified sources for those files as well. You can find a list of files you have created in your upload log. Unsourced and untagged images may be deleted one week after they have been tagged per Wikipedia's criteria for speedy deletion, F4. If the image is copyrighted and non-free, the image will be deleted 48 hours after 03:03, 27 February 2011 (UTC) per speedy deletion criterion F7. If the file is already gone, you can still make a request for undeletion and ask for a chance to fix the problem. If you have any questions or are in need of assistance please ask them at the Media copyright questions page. Thank you. Musamies (talk) 03:03, 27 February 2011 (UTC)

A quick question

Hi there, I have just finished wikifying an article you created (Kinetic momentum). You obviously have a lot more knowledge on the subject than i which is why i just wanted to double check one of my wikilinks with you. I did try to speak to the author of that particular edit but turns out he's been de-admin'ed and banned and you were the next best person to ask. Anyway the use of the word "extremizing", I dont have a clue what this means when talking equations despite trying to find out. The only thing i could find that was possibly correct was Maxima and minima. As i said above this level of mathematics etc is way beyond my understanding. If this is incorrect, please let me know. Thanks Bailo26 21:36, 6 June 2011 (UTC)

That is basically correct, though a link to calculus of variations would be more to the point, especially since the calculus of variations article has a section on the Euler-Lagrange equation, which is used in the derivation of Hamiltonian mechanics/Hamilton's equations of motion. —AugPi _(t) 13:40, 7 June 2011 (UTC)

Excellent, thanks for your help Bailo26 16:34, 7 June 2011 (UTC)

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Baseline (typography). —AugPi _(t) 15:21, 31 December 2011 (UTC)

File:BoysSurfaceTopView.PNG

I like your image of Boy's surface. (File:BoysSurfaceTopView.PNG) Which parameterization is it? I am concerned that articles contradict each other at the moment - at Boy's surface#Property of Bryant-Kusner parametrization it says that it is the Bryant-Kusner parameterization, whereas at Bernard Morin it says it is the Morin one. Thanks in advance for clarifying this matter. RupertMillard (Talk) 03:12, 31 December 2011 (UTC)

It is the Bryant-Kusner. —AugPi _(t) 15:16, 31 December 2011 (UTC)

Thanks. And thanks for sorting out the Bernard Morin article. I think the animation that you tried to insert was static because of the way MediaWiki resizes GIF files. I've put it back in, but it's arguably a little too big now. RupertMillard (Talk) 16:14, 31 December 2011 (UTC)