User talk:TakuyaMurata

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Dear Takuya Murata,

thanks for your edits of the Wikipedia entry "Urs Schreiber"!

I was wondering if you might have some energy left to edit. There is a Wikipedia page for the "nLab". As you probably know, this is a wiki for research mathematics which I had once created (on November 28, 2008). Maybe it would make good sense to link to that from the page with my name?

Also, if people wonder about book publications, maybe this here would help to point to?

In any case, many thanks for your time. With best regards, Urs Schreiber (talk) 15:55, 22 March 2014 (UTC)

It's cool to be contacted by the actual subject of the article. I've added a link to nLab, and started a publication list section, which should establish the "notability" (inclusion criterion in wikipedia), using a link you provided.
Thank you for the suggestion!
-- Taku (talk) 13:46, 23 March 2014 (UTC)
Thanks that you found the time to do this. I know that you have better things to do. Let me know if I might ever return the favor in some way.
Urs Schreiber (talk) 16:28, 29 March 2014 (UTC)
(Since you asked). There has been a speculation as to your nationality, something wikipedia editors care about :) It would thus help if you tell about your nationality somewhere, say, in your website. -- Taku (talk) 17:50, 31 March 2014 (UTC)


Hi Taku: I'm hoping to ask you for some feedback on an ad-hoc chart I'm drawing. Don't worry, it's not for Wikipedia. I just need someone who is well versed in commutative rings! If you find the time, take a look at this googledoc pdf. I have charts like this which are even more extensive for noncommutative rings, but these nice commutative conditions like Gorenstein and Cohen-Macaulay did not fit well there, so I'm doing a more dedicated chart.

I'm sure I've left out implications and/or things that are worth including. Whatever suggestions you can make about additions or omissions, I'd be interested in hearing. One thing I'm curious about is if regular rings are Gorenstein. The only information I found was that regular local rings are Gorenstein. Another thing I wonder about is if you can connect Cohen-Macaulay downward to other conditions on the chart. I just have no feeling for these types of rings. Please also browse that family of domains over on the left. That is also a new addition. Thanks: Rschwieb (talk) 01:38, 2 April 2014 (UTC)

Ah, ok! I'm glad it is not a rigid thing in commutative algebra. Exclusive definitions are certainly aesthetically unpleasing. I do indeed prefer the definition of "commutative hereditary domain." I've been taking a long look at the list of rings above that I didn't incorporate yet. The excellent-catenary-G-J2-Nagata-geometrically regular cluster looks very cohesive and makes a good chart, although I have no idea how it connects to the other things (except "Noetherian"). I haven't placed Zariski or Henselian rings yet. I've started a local chart too, and that needs a lot of work. I'll have to remember to push them out soon for feedback. Rschwieb (talk) 15:04, 16 May 2014 (UTC)
It just occurred to me "dimension theory" might be a reason you want to exclude a zero-dimensional ring (since a Hilbert polynomial will have negative degree.) "Geometrically," curves and points are fundamentally different after all. Anyway and by the way, are you interested in creating a chart for Nagata ring and such for Wikipedia? I found this stuff very confusing and I and some other readers can definitely use such a chart to make sense of a big picture. -- Taku (talk) 00:14, 17 May 2014 (UTC)
Here are some updated charts for you to look at. I'm not sure I could make a chart small or pretty enough for use on those pages, but I would be perfectly willing to make one if the right subgraph was worked out.
Commutative rings:
Local rings:
The cluster I haven't included yet: Rschwieb (talk) 18:06, 27 May 2014 (UTC)
Wondering if you overlooked this update or not! In the meantime, I've added complete intersection rings between regular local and local Gorenstein. Rschwieb (talk) 20:13, 2 June 2014 (UTC)

Speedy deletion nomination of Goop (newsletter)[edit]

Hello TakuyaMurata,

I wanted to let you know that I just tagged Goop (newsletter) for deletion, because the article doesn't clearly say why the subject is important enough to be included in an encyclopedia.

If you feel that the article shouldn't be deleted and want more time to work on it, you can contest this deletion, but please don't remove the speedy deletion tag from the top.

You can leave a note on my talk page if you have questions. Ging287 (talk) 00:14, 5 April 2014 (UTC)

Nomination of Law of Economy of Characters for deletion[edit]

A discussion is taking place as to whether the article Law of Economy of Characters is suitable for inclusion in Wikipedia according to Wikipedia's policies and guidelines or whether it should be deleted.

The article will be discussed at Wikipedia:Articles for deletion/Law of Economy of Characters until a consensus is reached, and anyone 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. Brainy J ~~ (talk) 17:07, 10 April 2014 (UTC)


Notice WMF's usual non-answer answer.

Actually, I think that the thing for you to notice in that thread is that "the WMF" hasn't answered at all. Every person speaking in that thread is speaking purely as fellow volunteers—some to notice that the development of math software is controlled by volunteers; others complain that, despite being good at math, they still can't understand most math articles; still others to suggest ways and means of improving the situation. But there is no reply from "the WMF" anywhere in that discussion. WhatamIdoing (talk) 22:15, 5 May 2014 (UTC)

I did notice that the comment in that thread was from User:WhatamIdoing rather than User:Whatamidoing (WMF). But I didn't notice any comment in the thread to the effect that "the development of math software is controlled by volunteers". Who said that? Deltahedron (talk) 17:31, 6 May 2014 (UTC)
You did: "that currently WMF allocates essentially no resources to this and it continues entirely on volunteer effort". WhatamIdoing (talk) 19:34, 6 May 2014 (UTC)
I nowhere stated that volunteers control mathematical software development: indeed I specifically wrote that volunteer effort is less effective through not being integrated into WMF development. This is a reference to the complaint made here for example. Deltahedron (talk) 19:53, 6 May 2014 (UTC)
The volunteers are the ones doing the work, and therefore they are controlling the work. The WMF does not and (in practice) cannot control WP:VOLUNTEERs. WhatamIdoing (talk) 20:37, 6 May 2014 (UTC)
Not what I said, not what I meant and not correct (see the diff). Deltahedron (talk) 21:01, 6 May 2014 (UTC)

Ok, maybe it should have been "non-answer non-answer". I also missed the distinction between WhatamIdoing and WhatamIdoing (WMF). In any case, my point still stands: Deltahedron asked a rather pointed question about the math rendering issue and got no-answer. We should continue the discussion at Jimbo's talk but I would say for the record Deltahedron's inquire "represents" to a large extent the voice of the math editor community if I understand correctly (certainly mine.) -- Taku (talk) 20:28, 6 May 2014 (UTC)

Or perhaps even more accurately: "There has been no official answer yet, despite this thread being open for an entire day and a half already". WhatamIdoing (talk) 20:37, 6 May 2014 (UTC)
Or even more accurately still: Jimbo Wales has answered with an interesting challenge which I have relayed to WT:WPM. Deltahedron (talk) 20:56, 6 May 2014 (UTC)

Example in article on Finitely generated modules[edit]

Hi, I recently posted a question about an example in the article on Finitely generated modules. I think you originally contributed this example (along with a ton of great additions to the article overall!), so I thought you might be able to clarify my confusion. Thanks! Tesseran (talk) 18:09, 13 June 2014 (UTC)

Proposed deletion of Narabunka Women's College[edit]

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The article Narabunka Women's College has been proposed for deletion because of the following concern:

Does not comply with notability guidelines for schools.

While all constructive contributions to Wikipedia are appreciated, content or articles may be deleted for any of several reasons.

You may prevent the proposed deletion by removing the {{proposed deletion/dated}} notice, but please explain why in your edit summary or on the article's talk page.

Please consider improving the article to address the issues raised. Removing {{proposed deletion/dated}} will stop the proposed deletion process, but other deletion processes exist. In particular, the speedy deletion process can result in deletion without discussion, and articles for deletion allows discussion to reach consensus for deletion. Why should I have a User Name? (talk) 08:19, 14 June 2014 (UTC)

Narabunka College[edit]

You're right. I must have confused it with college in another language, a primary school. Regards. --Why should I have a User Name? (talk) 11:21, 14 June 2014 (UTC)

Fine tuning[edit]

I look forward to hearing your reasoning here. Deltahedron (talk) 20:02, 20 June 2014 (UTC)


for your prompt response on Central polynomial and Posner's theorem! Deltahedron (talk) 06:31, 28 June 2014 (UTC)

July 2014[edit]

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Re:Formatting Improvements[edit]

The page in question was improved by my edits. So please be more specific about your criticism. — Preceding unsigned comment added by (talk) 01:39, 15 July 2014 (UTC)

I was thinking of the format change in the articles like Divisor (algebraic geometry). -- Taku (talk) 20:21, 15 July 2014 (UTC)

Speedy deletion nomination of Alisa Matviychuk[edit]

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A tag has been placed on Alisa Matviychuk requesting that it be speedily deleted from Wikipedia. This has been done under section A7 of the criteria for speedy deletion, because the article appears to be about a person or group of people, but it does not indicate how or why the subject is important or significant: that is, why an article about that subject should be included in an encyclopedia. Under the criteria for speedy deletion, such articles may be deleted at any time. Please read more about what is generally accepted as notable.

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Mark project defunct?[edit]

TakuyaMurata, I see that you have been a contributor to WikiProject Citizendium Porting. I am inclined to mark it as defunct, as there has been no work on it in a couple of years and it seems unlikely that Citizendium will be a useful source of content for Wikipedia articles in the future. Is that o.k. with you? RockMagnetist (talk) 18:00, 28 July 2014 (UTC)

I can totally understand. It's ok; it served its purpose by now. -- Taku (talk) 20:11, 30 July 2014 (UTC)

Orphaned non-free image File:Alisa Matviychuk.jpg[edit]


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Replaceable fair use File:Alisa Matviychuk.jpg[edit]

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Edit discussion.[edit]

Hello User:Takuya, Thanks for your many edits at the Wikipedia page. There is a BRD which I am trying to start at the Wikipedia page which someone is trying to oddly remove from the Talk page. Could you take a look at this when/if time allows? LawrencePrincipe (talk) 15:03, 30 July 2014 (UTC)

Krull dimension zero[edit]

In section Examples of Krull dimension, you have added an item about dimension zero. It is the fourth item about this dimension. IMO, the items deserve to be sorted for regrouping those related to dimension zero. Maybe, a section devoted to dimension zero could be useful. Also there is another property of dimension, that is yet lacking: "A finitely generated commutative algebra over a field has Krull dimension zero if and only if it is a finite dimensional vector space (over the same field). D.Lazard (talk) 08:49, 11 August 2014 (UTC)

Too be clear, I didn't add anything new. I made a minor formatting so that the item was not buried. Anyway, I do agree on the regrouping. We should also spell out zero-dim means possibly zero prime ideals are maximal and consequently for example Jacobson radical and nilradical are the same. I'm having a trouble with a non-Noetherian case, since a zero-dimensional Noetherian ring is just an Artinian ring and the article on the topic lists several equivalent characterization. -- Taku (talk) 11:36, 11 August 2014 (UTC)

Removing Tag from Noncommutative projective geometry[edit]

You've removed the tag More Footnotes tag from the article Noncommutative projective geometry without adding any footnotes. Since the article has zero footnotes for the statements you've made in the article, why did you remove the More Footnotes tag? Thanks! Stesmo (talk) 17:30, 11 August 2014 (UTC)

I removed the tag because it didn't make much sense. Not every article needs footnotes. If you were to add a cleanup tag and if the reason for doing isn't obvious, it is necessary to explain say in the talkpage to explain why the tag is needed. -- Taku (talk) 23:50, 11 August 2014 (UTC)

Nomination of Ken Nimori for deletion[edit]

A discussion is taking place as to whether the article Ken Nimori is suitable for inclusion in Wikipedia according to Wikipedia's policies and guidelines or whether it should be deleted.

The article will be discussed at Wikipedia:Articles for deletion/Ken Nimori until a consensus is reached, and anyone 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. Boleyn (talk) 13:46, 17 August 2014 (UTC)