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Talk:Theory of relations

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This is an old revision of this page, as edited by Howard McCay (talk | contribs) at 06:17, 27 May 2011 (→Local incidence properties: Corrected typo "is" to "it"). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Notes & Queries

Jon Awbrey 16:40, 14 January 2006 (UTC)[reply]

Hmmm... This looks familiar... Randall Holmes 02:26, 28 January 2006 (UTC)[reply]

  • JA: Different audience ∧ different scope (narrows horizontally on concrete combinatorial settings, but deeper vertically in coverage of more than just the basic definition) ⇒ substantially different article, cylindrically speaking. Jon Awbrey 04:02, 28 January 2006 (UTC)[reply]

Destructive formatting

JA: A style sheet that destroys information, or that leads to the erosion of information, is a bad style sheet. Please feel free to add pertinent information, but do not destroy any. Jon Awbrey 17:40, 21 March 2006 (UTC)[reply]

Local incidence properties

As of May 27, 2011, this section contained the following definition:

A k-adic relation L ⊆ X1 × … × Xk is said to be C-regular at j if and only if every flag of L with x at j has the property C, where x is taken to vary over the theme of the fixed domain Xj.

Expressed in symbols, L is C-regular at j if and only if C(Lx.j) is true for all x in Xj.

I could find no explanation of this mathematical use of the term theme in this Wikipedia.  Perhaps readers unfamiliar with this use of theme would more easily understand "where x is each element of Xj".  Or perhaps we should leave this definition as written and provide a link to a new page explaining what it means for x to be taken to vary over the theme of the domain X.  Howard McCay (talk) 06:14, 27 May 2011 (UTC)[reply]

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