User talk:Brirush

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Some Wikipedia conventions[edit]

Hello. Please notice my recent edits to the article titled Finite subdivision rule. In particular, the article began thus:

A finite subdivision rule is a recursive way of refining a cell complex.

That fails to tell the lay reader that mathematics is what it's about. I revised it to say

In mathematics, a finite subdivision rule is a recursive way of refining a cell complex.

In some cases, that's not necessary. For example, in the article titled Group (mathematics), the title itself accomplishes that purpose, and the same is true of something titled Associative algebra. One might also say "In geometry,..." or "In number theory,...", etc., but not "In category theory,..." since non-mathematicians would not usually understand that that is mathematics.

Also:

  • I made the article title singular. WP:MOS says the title should be singular except when there is a special reason for it to be plural.
  • The title of the initial section was the same as the article's title. I deleted the section heading for the initial section. That is customary. At any rate, that heading was redundant.
  • WP:MOS also says one shouldn't capitalize an initial letter merely because it's in a section heading. The first letter of the heading is capitalized, and of course so are the initial letters of proper names and the like.

I also added a few links. Michael Hardy (talk) 22:11, 27 August 2012 (UTC)

Research webpage[edit]

Personal Research Webpage

Disambiguation link notification for September 30[edit]

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A reference problem[edit]

Hi! Some users have been working hard on Category:Pages with broken reference names.

Here you added a new reference Elstrodt & Singh but didn't define it. This has been showing as an error at the bottom of the article. Cite error: The named reference was invoked but never defined. Can you take a look and work out what you were trying to do? Thanks -- Frze > talk 03:13, 23 October 2013 (UTC)

@Frze::

Disambiguation link notification for October 23[edit]

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October 2013[edit]

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Ring theory[edit]

Hello! I recently noticed your contributions at Ring theory. I liked some of the modifications, but there was a large chunk of content I removed. Let me explain.

I don't know if you were aware, but in the past year there was a lot of discussion about reconciling the roles of some of the "ring" articles, and the upshot was that ring theory would talk about the theory as a whole, whereas ring (mathematics) would talk about detailed information and examples of rings.

I think if you check out the latter article, you'll see that most of what you wrote about examples of rings and ideals is already there, so it shouldn't be duplicated to that extent elsewhere. I and other editors of these articles look forward to whatever ideas you might have about them. And knowing that there are these other articles might reduce the "expansion" task you hinted at in your edit summary :) Anyhow, I'll watch your talkpage for responses in the near future, and you're always welcome to contact me on my own talkpage. Regards Rschwieb (talk) 13:54, 25 October 2013 (UTC)

Thank you for your response! I see that ring (mathematics) does contain all of the material that I added. I've been trying to move all `start class' top importance articles up to at least a C. C articles are described as:

Useful to many readers. A reader would feel they generally understood the basics the topic, but there are noticeable gaps in the material presented. There may be questionable or irrelevant material or the material may not be organized in a way that makes the subject easy to understand. Will be of little or no use to a serious student or researcher.

I feel that ring theory is already at that level, if not higher. I felt that the only thing missing was a description of more of the objects used in ring theory, but I see now that that belongs to another article. I will continue on to other 'start class' articles, however, I was considering adding some image (like the formula for the distributive law, of Hamilton's famous quaternions cycle, or a diagram of a scheme, or a page from a book, or a picture of a famous ring theorist such as Emmy Noether). Brirush (talk) 14:25, 25 October 2013 (UTC)

Aha, well I'm glad to see this effort :) A picture would be pretty cool. I don't think any ring theorists would recommend a picture of a person, but yeah, one of the quaternion picture or else the page picture from Hilbert's book at ring (mathematics) might be good candidates. Good luck in your work! Rschwieb (talk) 18:06, 25 October 2013 (UTC)

Commutative algebra[edit]

You have added a section "Main tools and results" to commutative algebra. Such a section could improve the article dramatically, but not with the content you have added. In fact, except for Lasker-Noether theorem, none of the subsections are specific to the field. On the other hand the main tools that make commutative algebra a field that is different of non-commutative ring theory are not even cited. These tools include localization (including the field of fractions of an integral domain), completion, Zariski topology on prime ideals.

I could have reverted your edits, but is seems more constructive to let you correct them by yourselves.

D.Lazard (talk) 13:23, 29 October 2013 (UTC)

Thank you, it's good to have a direction to move in. I'll work on that, unless you beat me to it. I felt uneasy after my edits, but didn't know how to correct it. Brirush (talk) 13:56, 29 October 2013 (UTC)

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Talkback[edit]

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Double sharp (talk) 14:24, 2 November 2013 (UTC)

Thanks![edit]

Hi,

Thanks for your work on product (mathematics) (and, I now see, plenty of other pages as well. BTW, you might enjoy socializing at WP:WPM. User:Linas (talk) 18:08, 2 November 2013 (UTC)

Thank you! I was borrowing layout and equations from the German version; I know I left a lot for people to fill in, but I figured it would help people if there were a framework. I have been trying to get all 'start class' 'top importance' articles from mathematics to C class. Brirush (talk) 19:26, 2 November 2013 (UTC)

November 2013[edit]

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  • :<math>d\colon X \times X \to [0,\infty)</math>

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  • X</math> to be the origin. A '''geodesic ray''' is a path given by an [[isometry]] <math>\gamma:[0,\infty)\rightarrow X</math> such that each segment <math>\gamma([0,t])</math> is a path of shortest length
  • Given a point <math>p></math> in the Gromov boundary, we define the sets <math>V(p,r)=\{q\in \partial X|</math> there are

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Thank you for your recent edits[edit]

Wien weltausstellung med.jpg Medal of Honor
Good idea to split, the new title is: Mathematical constants and functions. Thank you. Ignacitum (talk) 16:05, 8 December 2013 (UTC)

December 2013[edit]

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  • Let ''X'' be a [[metric space]]. If ''S'' ⊂ ''X'' and ''d'' ∈ [0, ∞), the ''d''-dimensional '''Hausdorff content''' of ''S'' is the [[infimum]] of the set of numbers δ
  • of [[metric space|balls]] <math>\{B(x_i,r_i):i\in I\}</math> covering ''S'' with ''r<sub>i</sub>'' > 0 for each ''i'' ∈ ''I'' that satisfies <math>\sum_{i\in I} r_i^d<\delta </math>.

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  • W. R. Parry. ''Lattès maps and subdivision rules''. Conformal Geometry and Dynamics, vol. 14 (2010, pp. 113–140.</ref>
  • subdivision rules to refine a surface to any given level of precision. These subdivision surfaces (such as [[Catmull-Clark subdivision surface]] take a [[polygon mesh]] (the kind used in 3-d

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Your GA nomination of Finite subdivision rule[edit]

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