User talk:Jacj

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Welcome!

Hello, Jacj, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are a few good links for newcomers:

I hope you enjoy editing here and being a Wikipedian! Please sign your name on talk pages using four tildes (~~~~); this will automatically produce your name and the date. If you need help, check out Wikipedia:Where to ask a question, ask me on my talk page, or place {{helpme}} on your talk page and someone will show up shortly to answer your questions. Again, welcome!  andy 21:21, 18 Mar 2005 (UTC)

Contents

[edit] Category:GTA screenshots

Due to a bug in Wikipedia's software, please do not add Category:GTA screenshots to pages before that category is created. Thanks. Zzyzx11 (Talk) 03:25, 2 May 2005 (UTC)

OK, will avoid adding articles/media to empty categories. --Jacj 03:42, 2 May 2005 (UTC)
Just to clarify, normally when you add "[[Category:Foo]]" to the article [[Foo]], the software will automatically add a link to that category's page. But if you create the category's page last, then the link would not automatically appear until the article is saved again. Zzyzx11 (Talk) 04:01, 2 May 2005 (UTC)
Therefore, you should create the page Category:GTA screenshots first, then add "[[Category:GTA screenshots]]" to the articles. Zzyzx11 (Talk) 04:04, 2 May 2005 (UTC)
Will do. I'll make a description for the category first and recreate the list of screenshots that I'd previously placed in it. --Jacj 04:35, 2 May 2005 (UTC

[edit] Jeff Weise

  • Hi, just wandering, the is the term 'world wide web' better than 'internet' on the Jeff Weise article? just wandering.Mexaguil 07:59, 13 May 2005 (UTC)

[edit] Imagism

Thanks for your FAC vote and kind comments. Filiocht | Blarneyman 08:00, May 19, 2005 (UTC)

No problem; the article is well worth it. --Jacj 21:47, 19 May 2005 (UTC)

[edit] Template:Intellectual property

Thanks for the fine tuning on Template:Intellectual property. It looks nicer now! --Edcolins 11:45, Jun 11, 2005 (UTC)

Thanks! --Jacj 16:47, 11 Jun 2005 (UTC)

[edit] pictures on Bijection, injection and surjection

Great job! I didn't even know the old images were copyrighted, but they were definately ugly. Thanks again. --MarSch 15:16, 24 Jun 2005 (UTC) Perhaps you could create some pictures to illustrate what can be deduced from compositions being injective, surjective or bijective. It is actually quite simply explained with a picture, but if you don't know how it works it is kind of annoying to form the picture in your mind from text, so it would be a great addition. --MarSch 15:22, 24 Jun 2005 (UTC)

I don't really know anything about bijective/injective/surjective functions, so I'll leave the deductions for someone more knowledgable; I understand functions as a general mathematical concept, but not these special characteristics. I just made the new pictures because (as you said) they were quite ugly and they were copyrighted for some reason. --Jacj 05:39, 25 Jun 2005 (UTC)
Fair enough. These concepts are not very difficult though and I've added some more explanation to the intro. What I would like for the section on injections is a picture like you made before, but now of two functions applied one after the other. Thus there are 3 ellipses. I would like them to have 3, 4 and 4 members respectively. From the first to the second ellips, arrows as for an injective function and for the second to third ellips, the "same" three arrows plus one more arrow which points to where another arrow already points, (this is a non-injective non-surjerjective function). Thus basically you should merge picture 2 and 4 that you already made. I hope this is clear. It would be much appreciated if you could do this. --MarSch 11:36, 25 Jun 2005 (UTC)
I think I've done it, and I've put it to the right as a thumbnail. If I've messed any of it up, just say so. --Jacj 13:28, 25 Jun 2005 (UTC)

Yes, that is right. If this is the merger of 2 to 4, then I need mergers of 4 to 3 and 2 to 3, if it isn't too much trouble ;) to illustrate the other cases. --MarSch 19:06, 25 Jun 2005 (UTC)

Double mapping diagram of two function types
Double mapping diagram of two function types
4 to 3
4 to 3
2 to 3
2 to 3
I would've uploaded this earlier, but the database got locked. Now working on 2 to 3.
Update: Done! --Jacj 28 June 2005 03:50 (UTC)

Great! I've put them up. Thanks a million. --MarSch 28 June 2005 13:44 (UTC)

 

[edit] Request for more

The reward for doing a job well is to be asked to do it again, they say 8-). So, would you consider making a few more diagrams in the same style, all from {1,2,3,4} to {A,B,C,D}, to illustrate binary relation:

  1. single-valued but not total: R = {(1,D),(2,A),(4,A)}
  2. total but not single-valued: S = {(1,D),(2,A),(2,C),(3,B),(4,A)}
  3. neither total nor single-valued: T = {(1,D),(2,A),(2,C),(4,A)}

Also:

  1. Composition of two general relations, from {A,B,C,D} to {E,F,G,H} to {I,J,K,L};
    say, U = {(A,E),(B,E),(B,G),(D,H)}, V = {(E,I),(E,J),(F,J),(F,K),(H,K)}
  2. Inverse of a relation, say T−1 = {(D,1),(A,2),(C,2),(A,4)}

Also relations from a set {A,B,C,D,E,F,G} to itself:

  1. Permutation, W = {(A,B),(B,A),(C,C),(D,E),(E,F),(F,G),(G,D)}
  2. Arbitrary function, X = {(A,B),(B,B),(C,D),(D,E),(E,F),(F,G),(G,E)}
  3. Arbitrary relation, Y = {(A,B),(B,B),(C,D),(C,A),(D,E),(E,F),(F,G),(F,E)}

There are two ways of displaying a relation from a set to itself: by drawing the set twice, with arrows from one copy to the other, as above; or by drawing the set once, with arrows between its elements. It would be nice to have both pics for each case...
I could try to do the pics myself, but it would be nice to use the same fonts, arrow styles, linewidths, etc. I have a Linux machine (Fedora). What software did you use?
All the best, Jorge Stolfi 02:22, 20 January 2006 (UTC)

I used Macromedia Fireworks. However, since making those diagrams, I reformatted my computer and no longer have a copy of it, so I couldn't make more diagrams in the same style. (Paint doesn't really work for making concentric ellipses!) If it helps, I think the font used is Tahoma or Verdana. --Jacj 14:28, 21 January 2006 (UTC)

[edit] VfD/July 7

Hi. A gentle reminder, if you spot a copyright violation, placing a VfD on the page is not the appropriate action to take. I recommend reading Wikipedia:Copyright problems and Wikipedia:Deletion policy. Thanks. -- BMIComp (talk) 04:33, 10 July 2005 (UTC)

  • I am fully aware of this. The copyright violations present on the page are a relatively minor reason that I asked for the page to VfD'd. The nature of the page is such that it invites repeated copyright violations both now and in the future. Further, Wikipedia articles are not news reports. The entry is nothing more than a news report for a very recent event, and is effectively a batch of date-sensitive information and a directory to other websites. As an encyclopaedia, time-critical information and website directories do not belong here. --Jacj 04:45, 10 July 2005 (UTC)

[edit] GNAA VFD

Hello. The complaint about the article is not about the use of the n word in the article name, but wether or not the group is notable. Thanks. Zscout370 (Sound Off) 1 July 2005 01:04 (UTC)

I wasn't thinking of you when you made that comment; you gave a reasonable reason for voting keep that was argued from principle; fair enough. But I get the impression that some of those voting delete without explaining why only do so because they disagree with the title of the article or the actions it describes, as opposed to notability. --Jacj 1 July 2005 14:45 (UTC)
As for the notability stuff, I was proven wrong. I am eventually will work to fix the article, but I am not voting to keep or delete in this new round. Zscout370 (Sound Off) 04:21, 10 July 2005 (UTC)
Fair enough. --Jacj 04:22, 10 July 2005 (UTC)

[edit] Image:Velvet_underground_and_nico_album_cover_1.png

Image deletion warning Image:Velvet_underground_and_nico_album_cover_1.png has been listed at Wikipedia:Images and media for deletion. If you feel that this image should not be deleted, please go there to voice your opinion.

250px|left <-- Hi, I replaced your image with this one. I hope you can agree that it is a cleaner, higher quality version of the album cover. (The reason why I created a new image space instead of uploading over the old one is because the old one is in PNG format, while the newer one I uploaded is JPEG). Thanks -- jiy 08:29, July 31, 2005 (UTC)

Looks good to me! --Jacj 10:45, 31 July 2005 (UTC)

[edit] Hall Monitor's RFA

Thank you for the taking time to comment on my recent RFA nomination. Your confidence and support is greatly appreciated. Hall Monitor 19:19, 19 August 2005 (UTC)

[edit] Template talk:Infobox Biography

I'm having some issues on John Vanbrugh. People keep removing the infobox! I think it's quite useful as it does take some hunting to find information about birth places, birth dates and death dates/places in many of the articles. Could you comment on the talk page? - Ta bu shi da yu 02:53, 7 September 2005 (UTC)

[edit] User:Jacj/Contributed media

Hi, please turn this gallery (or at least all the fair use images on it) into a list of links instead or something like that as soon as possible. Wikipedia policy doesn't allow fair use images to be displayed in userspace (see Wikipedia:Fair use#Fair use policy), and acording to this report you have 49 of them on that page (if you have fair use images on other userspace pages please fix those too). I'm working pretty much at random off that list, so don't feel singled out if others on the list with more images have not yet been notified. Eventualy I'll get around to them all (though hopefully I'm not the only one working on it). Thanks in advance. --Sherool (talk) 01:35, 8 February 2006 (UTC)

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