User talk:Jitse Niesen

Tasks: start a new article • add basic, wanted or requested articles • add definitions • add metadata • edit new pages

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Kind Regards, Chris Day (Talk) 02:37, 12 February 2007 (CST)

Hi Jitse, and welcome to Citizendium! Fredrik Johansson 03:12, 13 February 2007 (CST)

Hi Fredrik. Nice to run into someone I'd met before. Let's see how this Citizendium thing pans out. -- Jitse Niesen 04:54, 13 February 2007 (CST)

Straight line

Hi Jitse, happy to see you here. I agree with your views on straight line (I requested deletion). FYI, one may try to find a constable i.e. 'admin, I know you know what it means ;-). Better yet, you just write to constables_at_citizendium_org and someone takes care. But it is not constable who decide. It is rather an _editor. It could mean you, do not you think? Happy editing --AlekStos 07:09, 27 March 2007 (CDT)

Hi Alexander. Thanks for your help. I'm already spending too much time at the other place, so if I became an editor here I wouldn't have any time left to write papers, and we all know what happens when you don't publish ;) But you seem to quite like it here, so I assume you will become one.

For the moment, I intend to drop by regularly, lend a hand if possible, and see how the project develops. If you ever have an issue here surrounding the 65xx magic number, feel free to ask. See you, Jitse Niesen 07:49, 27 March 2007 (CDT)

Jitse, editor zijn kost net zoveel of net zo weinig tijd als schrijven. De tijd die je investeert bepaal je uiteindelijk zelf. Je hebt alleen wel duidelijk inbreng in de werkgroep als geheel, en sommige artikelen in het bijzonder. Groet. Robert Tito |  Talk  21:31, 28 March 2007 (CDT)

Ik zal erover denken. Groetjes, Jitse Niesen 21:54, 28 March 2007 (CDT)

Cantor's diagonal argument

I know this is annoying, but for tose of us who have forgotten, could you provide a glossary of symbols at a bottom section? I've forgotten what a lot of the symbols, including the Greek letters are, and so I can't read much of this. I don't mean a whole explanations just a simple:

Greek letter=theta Math symbol=union

kind of thing. Thanks for your patience. Nancy Sculerati 08:09, 31 March 2007 (CDT)

It's an interesting suggestion. My first reaction was that if you don't know all the symbols, you have little chance to understand the article. However, I now think that might be a bit harsh and that we should consider it on an article-by-article basis; there might be some articles in which such a glossary would be useful. For this specific article, I think it's possible to explain the idea of the argument without using any symbols at all. User:Aleksander Stos has been working on it and added a more elementary discussion; I think it could be made even more accessible.

I used to know the symbols and I have forgotten them, that's why a glossary would be great. And so what? Inclusion hurts no one- this is not a book that will be too heavy or too expensive to print. Just make an addendum at the bottom of the article. No reason not to. Nancy Sculerati 23:49, 24 April 2007 (CDT)

I think you should leave a message at the talk page as I did only one small edits while others are doing most of the work. In fact, I would have copied your message there had I been sure that would be a proper thing to do (I'm fairly new here). -- Jitse Niesen 21:04, 1 April 2007 (CDT)

Newton's method

If you have the time, perhaps you'd be interested in contributing to the article on Newton's method which I started a while back? Fredrik Johansson 10:42, 3 April 2007 (CDT)

The outline looks good. Rather embarrassingly, I don't know that much on the more sophisticated variants. Two quick points:

• I'm not convinced that you need that much about cubic convergence. Convergence failure, on the other hand, is rather important.
• If you want to add a bit on history, you can use the history section which I wrote in this revision on WP. I'm not sure how to fit it in the rest of the article.

I'll see whether I can find some time to add a bit on convergence failure. -- Jitse Niesen 20:04, 5 April 2007 (CDT)

Thanks for having a look, Jitse. I agree with the first point. Regarding the second point, I'm glad you wrote that history section! It's the only part of the Wikipedia article that I envy :-) Maybe you could paste it at the end of the article? Fredrik Johansson 20:50, 5 April 2007 (CDT)

Such profuse praise makes me suspicious ;) As you will have noticed, I copied the history part. -- Jitse Niesen 09:21, 6 April 2007 (CDT)

Welcome again-as Editor

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Welcome, new editor! We're very glad you've joined us. Here are pointers for a quick start. Also, when you get a chance, please read The Editor Role. You can look at Getting Started and our help system for other introductory pages. It is also important, for project-wide matters, to join the Citizendium-L (broadcast) mailing list. Announcements are also available via Twitter. You can test out editing in the sandbox if you'd like. If you need help to get going, the forum is one option. That's also where we discuss policy and proposals. You can ask any administrator for help, too. Just put a note on their "talk" page. Again, welcome and thank you! We appreciate your willingness to share your expertise, and we hope to see your edits on Recent changes soon. Nancy Sculerati 00:50, 25 April 2007 (CDT)

Wow, you're fast. I was just writing a reply saying that your message had convinced me to send an application. -- Jitse Niesen 00:54, 25 April 2007 (CDT)

But-I had already received your application. Now, perhaps you will look at the messages under Approvals on the side bar? Nancy Sculerati 01:08, 25 April 2007 (CDT)

Congrats! Fredrik Johansson 02:10, 25 April 2007 (CDT)

Differential equations

Sorry about the slip-up - I think the phone must have rang as I was about to do something. Your edit summary is correct and thank you for spotting my error!W. Frank 08:42, 29 April 2007 (CDT)

Name

Thanks Jitse! I kept looking and looking to see why the link was red. I could swear I spelled it right, but when you put the two together it was so obvious!! Sorry about that. It is important... we don't want the wrong guy to get all the credit ;-) --Matt Innis (Talk) 21:49, 10 May 2007 (CDT)

Don't you worry, that's why they pay me the big bucks.. (not) ;-) --Matt Innis (Talk) 11:23, 11 May 2007 (CDT)

I apologize to you Jitse, I want everyone comfortable and I blame myself for not managing better to do that. sorry. Nancy Sculerati 17:58, 11 May 2007 (CDT)

help with focusing on developed articles

Jitse, each Thursday I highlight some articles that are developing nicely, perhaps seem ready for approval, or would be if the right people took an interest and worked on them. I do this by going to http://en.citizendium.org/wiki/Category:Developed_Articles and scrolling down to where the article's talk pages are listed, and browsing the corresponding articles. Could I ask you to do this? Well I just did, I guess I mean, could you kindly do this and let me know if you find any artices that you think might be ready for the kinds of attentions that bring approval? Either in your field or not. What looks like it would be an asset worth our combined attentions? thanks so much, (for reading this ramble- whether or not you oblige) Nancy Sculerati 10:27, 24 May 2007 (CDT)

Essentials

Hi, glad to see you! Aleksander Stos 02:12, 4 August 2007 (CDT)

Thanks, and also for the work on prime number. Didn't know you made "promotion", congratulations (I think). -- Jitse Niesen 00:59, 13 August 2007 (CDT)

Thanks -- still learning and this time it took too long to move the text. I didn't forgot maths, though, and I'm thinking of a little innovation. CZ maths articles are deliberately "geared toward someone who is completely unfamiliar with the concept" (google it to find the author ;-) ). We have "tutorials" while I believe that a more advanced reader could benefit more from "reference manuals": just essentials (relevant definitions, formulas, theorems). I envisage math "users" (rather than laymans), starting from undergraduates preparing for exams through graduates, PhD students to --why not-- scientists. I find that our basic formula is too sparse/too easy to be fully useful. No problem -- a "reference manual" could be incorporated in the subpage system we are planning. To give an example I'm preparing Complex number/Essentials (when more or less finished I'll put a post on a forum). Meanwhile, I'd appreciate your comments on the idea and the draft itself. Aleksander Stos 08:05, 13 August 2007 (CDT)

I answered your question by mail. You're right regarding the interest in talk pages. Last time I checked 45% of edits was in the mainspace. So I go to work ;-) Nonetheless, I think we could talk less if more issues were decided -- this is just start and sometimes I feel we are in the undefined , esp. in maths. Perhaps it should be solved by writing articles. Aleksander Stos 13:27, 20 August 2007 (CDT) PS. Good start with Noether, wish you good luck!

Any idea what the number is for Wikipedia? I personally have about 50% of my edits in the mainspace there and I'd guess that the average is about the same. Of course, you cannot quite compare them: we have the forums; Wikipedia has more unproductive edits. -- Jitse Niesen 21:23, 22 August 2007 (CDT)

Well, 50% in the mainspace on WP means trolling  ;-) On a more serious note, global average on small and not-so-small Wikipedias is about 80% (e.g. fi, es, lt, pl, ja,no) or 70% (de, hu, fr, lv). I'm not sure about enwiki, I'd guess it's about 60%-70%, I'll check. Actually, these numbers are not very accurate as including bots and, sorry to say, vandalisms. So maybe 50% is not far from the average for the real producers. Clearly, admins and active project leaders tend to have this number relatively smaller. On the other hand, I know some enwiki users with more than 0.6-0.7 (I have about 0.7) in the main (this number is naturally smaller for admins, though). More substantial would be not the global average but a median of individual user's "coefficient". I do not know that (yet), except for a very old test for the top 600 active users on plwiki. By definition there were no vandals nor bots. The median was 77%.

The bottom line is that, regardless, I consider 45% on CZ too modest. The only excuse I see is the early stage of the project and many undefined meta-wiki areas to cover. Aleksander Stos 03:22, 23 August 2007 (CDT)

LaTeX

Dag meneer Niesen :-), I know your name from Wikipedia, where you still seem active. You and I both supported Bduke for adminship. I got completely fed up with WP, and won't contribute to it anymore.

It would be nice if you could fix LaTeX because the last couple of days I spent quite some time in workarounds. I am in the process of transferring my stuff from WP to CZ. But in between, I just finished a couple of minutes ago a little stub about the Netherlands, just to have something about our country in CZ. Groetjes, Paul. --Paul Wormer 09:35, 20 August 2007 (CDT)

Not much progress on the LaTeX front. The software on Citizendium is out-of-date, so the tech guys needs to update it. I left a message on User talk:Jason Potkanski but no reaction. I'll probably e-mail him tonight.

Yes, I'm still very much on the WP/CZ fence. I did remember your name from Wikipedia, but I did not remember the context. Anyway, I hope you'll have a better experience here. You are certainly hitting the ground running! Cheers, Jitse Niesen 21:23, 22 August 2007 (CDT)

I sent emails to User:Jason Potkanski and User:Greg Sabino Mullane. -- Jitse Niesen 21:26, 23 August 2007 (CDT)

And Greg made it work. Look how \begin{align} is a joy for the eyes:

${\begin{aligned}\sum _{i=1}^{n}i&=1+2+\cdots +n\\&={\tfrac {1}{2}}n(n+1).\end{aligned}}$

So, now that there are no more excuses, everybody can start writing article! -- Jitse Niesen 10:18, 24 August 2007 (CDT)

Borel set

Beste Jitse,

Thanks for your message and help with polishing the entry on Borel sets, I'm happy with the changes made. It's also nice to hear from someone else from Twente! I have a friend who got his PhD from Toegepaste Wiskunde - UT last year and is now doing a postdoc in the EE dept at the University of Melbourne, so it is not quite as rare as one may think :) I was with the Systems, signals and control group at Twente and worked with Prof. Arunabha Bagchi, I guess you were with the Numerical Analysis group (Ruud van Damme)?

Met vriendelijke groet Hendra I. Nurdin 06:18, 1 September 2007 (CDT) PS. Mijn Nederlands is erg slecht en minimaal, but I try to use the little that I know once in a while

applied math welcome

My daughter Liz is studying applied math in graduate school (at Dartmouth), and MANY years ago I took a degree in math myself. I gave it all up for history, and am now busy doing history articles for CZ. So keep up the good work. Richard Jensen 02:11, 11 September 2007 (CDT)

none

Just noticed this edit. Thanks for improving it. Chris Day (talk) 01:59, 12 September 2007 (CDT)

Your correction

Jitse, thanks for noticing the error (X of A instead of A of X) in the definition of limit point. I noticed it as well and was trying to fix it at the same time you were making the correction (I've never had such editing coincidences before). Hendra I. Nurdin 06:57, 15 September 2007 (CDT)

Your magic bot

Jitse, Chris Day mentioned that your bot could change something on the metadata template. There is a variable called dialect which needs to be changed to variant. This variable doesnt actually appear on the standard article checklist, but is on the subpages metadata. Can you help with this? We need it for the implementation of Ed.Council Resolution 5. Many thanks. --Martin Baldwin-Edwards 06:43, 23 September 2007 (CDT)

Temporary Bot block

The Subpagination bot has been temporarily blocked for 3 days as we're doing the updates (we're down to one server at a time and experiencing heavy traffic for some reason). This is not an indication of any failing on its part (indeed, I love it). It's currently set to be blocked for 3 days - hopefully we'll have this sorted out tomorrow or Friday. Sorry. --ZachPruckowski (Speak to me) 17:22, 26 September 2007 (CDT)

Complex number article

Jitse, could you have a look at this Talk:Complex_number#Remaining errors in this approved article? Thanks. Hendra I. Nurdin 14:00, 20 October 2007 (CDT)

Subpagination

I think we fixed the server issue (reprioritizing the job queue) and Supagination Bot wasn't necessary the cause. The cause was altering the subpage templates constantly, which forced about a million page updates. It's my understanding that Chris Day is re-doing the subpages for other reasons (size reduction), so check with him. --ZachPruckowski (Speak to me) 09:38, 31 October 2007 (CDT)

Hi, just to let you know, I replayed on my talk. Cheers, Aleksander Stos 11:12, 5 November 2007 (CST)

subpages

Hi Jitze, sorry to be slow getting back to you. The only update since last time is that I noticed the currently template is stating to get pretty large after the all the transclusions are considered. One thing that kills it is if the metadata template has too much info. Therefore it would be god to keep that to a minimum. I would suggest the following content:

{{#switch: {{{info}}}
|       pagename =
|        variant =
|            abc =  
|      cat_check = 
|         status = currently no status
|    underlinked = 
|        cleanup = 
|             by = 
|           cat1 = 
|           cat2 = 
|           cat3 = 
<!--required for ToApprove template-->
|    article url =
|    subpage url = 
|        cluster =
|            now =
|     ToA editor = 
|    ToA editor2 =
|    ToA editor3 =
|           date =
<!--required for Approved template-->
|       A editor = 
|      A editor2 = 
|      A editor3 =
}}<noinclude>{{subpages}}</noinclude>

This may be simlilar to waht you already have. If so then there is no problem. Note, if status is blank then leave it as "currently no status", if the abc field is blank then leave the non breaking space. does this make sense? Chris

LaTeX problem

Hi Jitse, I tried to typeset roman "Res" with "z=a" underneath. In plain TeX (and also LaTeX) I do this as follows: $\mathop{\mathrm{Res}}\limits_{z=a}$. But the Wiki TeX doesn't like this, do you know a solution? Thank you,--Paul Wormer 02:13, 7 November 2007 (CST)

The best solution is of course to fix the Wiki TeX, but the next best one, as far as I know, is to use \underset. For instance, write

\underset{z=a}{\mathrm{Res}} f(z)

to get ${\underset {z=a}{\mathrm {Res} }}f(z)$. You might have to add some spacing like \, after the Res.-- Jitse Niesen 08:54, 7 November 2007 (CST)

Bedankt, zie Augustin-Louis Cauchy#The works of Cauchy.--Paul Wormer 02:30, 8 November 2007 (CST)

Netherlands

Yes, I deleted those few sentences because they were not true. The 7 provinces started first to be recognized as a sort of confederation under the reign of Charles V (1515-1555). Not in the thirteenth century. I don't remember that I marked the minor box, I probably shouldn't have done that.--Paul Wormer 02:41, 11 November 2007 (CST)

forgot to mention

We got rid of the Unused pages subpage. It is now incorporated into the talk page. So that page is no longer part of the cluster and does not need to be created by the bot. Sorry for not mentioning this before, it slipped my mind. Chris Day (talk) 08:12, 12 November 2007 (CST)

Yes, I already found this out. Thanks anyway. -- Jitse Niesen 08:18, 12 November 2007 (CST)

thanks for the bot-work on subpages

CZ pages look a lot sharper now (and look better than Wikipedia). Great job! Richard Jensen 09:40, 16 November 2007 (CST)

Yes, thanks for the help with the bot, Jitse. Sorry for my ignorance, but...is it finished subpaginating? --Larry Sanger 21:35, 21 November 2007 (CST)

Ideals

Dear Jitse:

Any element of the ring of integers x generates a (principal) ideal (x). This ideal, like all other ideals, factorises uniquely into prime ideals. Colloquially, we identify x with (x), and say the algebraic integer x factorises uniquely into prime ideals. Strictly speaking, however, you are correct.

Harald Helfgott 13:07, 18 November 2007 (CST)

On topological space article

Beste Jitse, I just wanted to bring your attention to this comment regarding the topological space and Topological Space articles. Groet, Hendra I. Nurdin 01:00, 3 December 2007 (CST)

You deserve to be credited...

Well, I see you were working away on party day, which makes you one of the shy boys. I’ll have to come and drag you in next month! Aleta Curry 23:45, 9 December 2007 (CST)

Tweede muis

Hallo Jitse, heb je gezien dat grote vriend tweede muis (je weet vermoedelijk wel wie ik bedoel) zich ingeschreven heeft? Daar zullen we nog wel wat van gaan merken. Groetjes, --Paul Wormer 05:04, 13 December 2007 (CST)