Talk:Divisibility
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Property 4 is currently: "if a divides b and c then it also divides a+b." Shouldn't the last sum be b+c? If not, then we do not need c, just: if a divides b, then it also divides a+b and a-b and ... Sandy Harris 10:58, 27 June 2009 (UTC)
- A typo, thanks. (Is it against CZ politeness to simply correct this?) Peter Schmitt 11:38, 27 June 2009 (UTC)
Topic Already Exists
Is there some reason that this topic needed to be created even though the divisor page already exists? I like nouns referring to objects better than ones referring to relationships, so my preference is that the main page be called divisor. However the cards fall, I think one of the pages must disappear.Barry R. Smith 19:09, 22 July 2009 (UTC)
- I know about the "divisor" page, but "divisibility" is a more general notion which can serve as a "parent topic". "Divisor" is not suitable for this. I agree that, in general, objects are better suited for titles (like countable set, not "countability"), but this is different, I think. "Divisibility" or "divisibility theory" are quite usual as titles for chapters in number theory books.
Moreover, I think that divisor may still serve a purpose for the elementary arithmetic meaning of "divior" in a division and in a fraction (and to "disambiguate" more advanced uses), topics that do not fit on the divisibility page. Peter Schmitt 17:31, 23 July 2009 (UTC)
- I know about the "divisor" page, but "divisibility" is a more general notion which can serve as a "parent topic". "Divisor" is not suitable for this. I agree that, in general, objects are better suited for titles (like countable set, not "countability"), but this is different, I think. "Divisibility" or "divisibility theory" are quite usual as titles for chapters in number theory books.