Talk:Non-Borel set: Difference between revisions

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imported>Boris Tsirelson
(→‎Some remarks: correction)
imported>Peter Schmitt
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:About "Advanced": I guess that only a small fraction of readers acquainted with Borel sets are also  acquainted with analytic sets and their completeness. Maybe it is better not to frighten them? [[User:Boris Tsirelson|Boris Tsirelson]] 05:46, 21 June 2009 (UTC)
:About "Advanced": I guess that only a small fraction of readers acquainted with Borel sets are also  acquainted with analytic sets and their completeness. Maybe it is better not to frighten them? [[User:Boris Tsirelson|Boris Tsirelson]] 05:46, 21 June 2009 (UTC)
:: merge: sure -- but on the other hand, it could be an incentive to expand that article, and it could make it easier. But there is no hurry, of course.
:: advanced: To show what I mean, I have added a paragraph and the data to the bibliography. I think that it does not hurt if a reader does not understand it, if it is clear that it is not meant to be "elementary". On the other hand, it shows that mathematics is not all about fiddling with numbers.

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 Definition A constructive example of a set of real numbers that is not a Borel set. [d] [e]
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WP article "Non-Borel set", version of 23 Aug 2008, was used. I am its sole author.
Boris Tsirelson

Suggestion: Create "Related Articles" subpage

Hi, Boris. The only suggestion I have is that you should create the "Related Articles" subpage:

  • When you click on the "Related Articles" tab just above, you will see the instructions on how to do it.

Other than that, you seem to have learned the CZ style quite well. Milton Beychok 23:55, 20 June 2009 (UTC)

A question. The related articles are already linked from the article. Should they be linked again from "Related Articles"? And if you answer "yes" then I have another question: some of these are for now non-existent articles; should they also be included into "Related Articles"?
By the way, I am astonished to see "Elementary function" a subtopic of "Logarithm". Indeed, the logarithm is just one of the elementary functions; why "subtopic"? Boris Tsirelson 05:35, 21 June 2009 (UTC)

Some remarks

I think it would be better to merge this with Borel set (which is not more than a stub). An article about Borel sets should also tell about non-Borel sets.

In my opinion (I do not know if this is a general opinion) this article does not need a link to "simple" topics like divisor, etc. It necessarily addresses readers who should know this.

The "Advanced" subpage only contains one sentence and a reference -- that could/should be moved to the article.

Peter Schmitt 00:11, 21 June 2009 (UTC)

About merge: in principle I agree, but for now the "Borel set" article is even shorter than this short one; the merge will create a ridiculous dis-balance.
About simple links: OK, I'll remove some.
About "Advanced": I guess that only a small fraction of readers acquainted with Borel sets are also acquainted with analytic sets and their completeness. Maybe it is better not to frighten them? Boris Tsirelson 05:46, 21 June 2009 (UTC)
merge: sure -- but on the other hand, it could be an incentive to expand that article, and it could make it easier. But there is no hurry, of course.
advanced: To show what I mean, I have added a paragraph and the data to the bibliography. I think that it does not hurt if a reader does not understand it, if it is clear that it is not meant to be "elementary". On the other hand, it shows that mathematics is not all about fiddling with numbers.