User talk:Jorge Stolfi
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[edit] Grassmann/Plücker
Thank you very much for the review.
Extended tutorials are discouraged, and perhaps moved to Wikibooks. On the other hand, we also get irate complaints about mathematics articles being completely useless to anyone but an expert. The "Geometric intuition" section which begins the article is deliberately more informal and tutorial; it even includes a picture! (Some of our mathematics editors have complained about silly pictures in articles, though not specifically about this one.) After that, however, the style becomes more Spartan. (No more pictures!) Wikipedia has such a diverse audience, we've generally tried to follow this kind of pattern where possible. Still, for a topic only a mathematically advanced reader could absorb, we may abandon the general reader in the opening paragraph. The impossible articles are the ones almost anyone might try to read.
Recently I've had discussions about the scope of the name "Plücker coordinates". For some, it seems that Grassmann has been shoved aside in favor of using "Plücker coordinates" for more than just line coordinates in 3D. That is, what Hodge & Pedoe called "Grassmann coordinates" (both primary and dual), are now subsumed under the Plücker name. Two editors remarked:
- I was actually quite a bit put off by the article itself: in algebraic geometry these days no one talks about Grassmann coordinates, and everyone would scratch their head if you told them that Plücker coordinates apply to Gr(2,4) only!
- I have to say that 'Grassmann coordinates' holds no appeal for me as terminology. It would be better to have some good history, but to use 'Plücker coordinates' everywhere, IMO.
Do you have a strong opinion either way? (Skimming your home page at UNICAMP, it's hard to tell what you are actively pursuing, so I don't know if Plücker coordinates are a distant memory or a daily tool.) --KSmrqT 22:55, 22 April 2007 (UTC)
[edit] Image:HeNoHeNoMoHeJi.png
(Complaints by MER-C 12:47, 26 May 2007 (UTC) and Aksibot 22:11, 2 June 2007 (UTC) about the uncertain copyright status of Image:HeNoHeNoMoHeJi.png. Not sure of it myself; there was an original image, which someone else had provided. I may have made cosmetic edits to it. I may provide a new one if I get a round tuitt.
[edit] Earth Mover's Distance
I have tagged this article in several ways. Could you get some peer-reviewed articles and web pages to verify this subject and the details of the article? Bearian 21:21, 27 June 2007 (UTC)
[edit] Raster graphics cf. vector graphics
I am quite impressed by your user page. So much expertise!
I am interested: what is the use of raster graphics in contrast to vector graphics? The two articles did not resolve the question for me. In particular, which graphics editing (raster or vector) is better for analog pictures? Thank you, Dogru144 16:45, 8 August 2007 (UTC)
[edit] Pseudo-Geber
Hi, as far as I can see, you've added information about work made of pseudo-Geber.
It's something wrong with either his time of birth (the article said he was born in the 14th century), or the time his works was made (1310), unless he was less then 10 years old when he made the work.
The sentence saying "Pseudo-Geber was instrumental in spreading Islamic alchemical theories throughout western Europe", doesn't make sence if you compare it with the sentence saying "In any case, Pseudo-Geber's work reflects 14th century European alchemical practices rather than earlier Arab ones".
I don't know where you got this information, I don't have any sources. But something is wrong in the article-. Grrahnbahr 18:27, 3 September 2007 (UTC)
[edit] from learnportuguese
Hi! :) I'm really interested in the Portuguese language. I found your page through the talk page of an article on Brazilian Portuguese. Just put a watch on my user page and talk page if you want. I am American, by the way. Um, if i get this right, Quero aprender Português porque quero ser jornalista (for radio). :) learnportuguese 23:11, 1 October 2007 (UTC)
[edit] learnportuguese
I'm interested very much in the Portuguese language. Just check out my user page and talk page. If you put a watch on my user page, Wikipedia software will automatically also watch my talk page. Have fun! :) learnportuguese 01:54, 4 October 2007 (UTC)
[edit] AfD nomination of Vijay Park
An article that you have been involved in editing, Vijay Park, has been listed for deletion. If you are interested in the deletion discussion, please participate by adding your comments at Wikipedia:Articles for deletion/Vijay Park (2nd nomination). Thank you. --B. Wolterding 19:15, 4 October 2007 (UTC)
[edit] Removal of In Plain English section
Hi, please don't remove the plain English section, it is definitely clearer to me and to the people that I have shown it to than the rest of the article which is laden in heavy mathematical terminology. If you feel it's misleading, consider improving it instead of deleting the entire section. Thank you. -- itistoday (Talk) 22:49, 7 October 2007 (UTC)
[edit] Venetian Ceruse
It is the name of the cosmetic so both words should be capitalize like Toronto Blue Jays. In future, before you move an article, please discuss it on the articles talk page to get a consensus. Chessy999 23:02, 16 October 2007 (UTC)
- No it is a brand, that is what it is called. Chessy999 21:24, 18 October 2007 (UTC)
[edit] hi
Hi. I found you in categories of users who can contribute in English and Portuguese. I myself am a native speaker of English, but I'm well on my way to learning Portuguese. Just check out my user page and talk page, and join in any of the discussions. To keep updated, you can even put a watch on my user page, which will automatically watch my talk page. :-) learnportuguese (talk) 20:24, 8 February 2008 (UTC)
[edit] Voynich Manuscript at FAR
Voynich Manuscript has been nominated for a featured article review. Articles are typically reviewed for two weeks. Please leave your comments and help us to return the article to featured quality. If concerns are not addressed during the review period, articles are moved onto the Featured Article Removal Candidates list for a further period, where editors may declare "Keep" or "Remove" the article from featured status. The instructions for the review process are here. Reviewers' concerns are here. Nishkid64 (talk) 21:20, 14 February 2008 (UTC)
