Talk:Affine geometry
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| Mathematics rating: | Start Class | High Priority | Field: Geometry | ||||||||||||||||||||
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The semi-direct product formula as written in has a couple of problems: (a) format (doesn't display on my browser) (b) for those fussy about invariance, it chooses a basis.
Charles Matthews 08:24, 18 Aug 2003 (UTC)
I just fixed (b); (a) seems to have been fixed already with Image:Rtimes2.png. -- Toby Bartels 22:12, 2005 Jan 27 (UTC)
I am disappointed to see that this entry states no axioms. Affine geometry can be derived by adding a few axioms, and a primitive notion or two, to projective geometry.132.181.160.42 01:30, 15 March 2006 (UTC)
I am an intelligent member of the public who wanted to find out about affine geometry. This article failed to inform me of what affine geometry is, as it is explained in terms of affine geometry and other geometries in a roundabout of unilluminating self-references.
This is an encyclopedia, not a text-book for the elite. An encyclopedia brings explanation to difficult ideas. This article failed to achieve that, and looks more like an exercise in 'what I know, and you don't know'. Please edit it to say what affine geometry is.--IvorJ 18:28, 29 September 2007 (UTC)
My Revision of 15:53, 9 December 2007 is a significant improvement to the article on affine geometry. I don't understand why User:AlexFusco5 reverted my edits as vandalism. To be sure, I did significantly restructure the page. A few of my edits may be controversial and I would encourage the community to think about them and either revert or further improve them to accommodate all prior editors' contributions as well as extend them for content and clarity. But please revert the one or two items with which you disagree, this wholesale reversion by User:Alexfusco5 is frustrating as I spent a lot of time trying to make my contribution as incisive as possible. Looking at his significant contributions, I assume he noted the major changes and hastily jumped to the wrong conclusion. Since this is the first article that I have changed significantly, it may be that I missed some elements of Wikipedia protocol (e.g., I forgot to provide an edit summary and didn't I post in the discussion thread ahead of the edits). When I re-institute my edits, I will document them better. my home page] has my e-mail address if someone might care to apprise me of protocols which I haven't adduced as yet.
I think the neutral point of view is violated in the original article by statements such as this: "That may be desirable from a geometric point of view, rather than finding a heavy-handed proof using analytic geometry. But it's then a question of axiomatic study (so-called synthetic point of view)." My version took the ideas of the author of those sentiments and accommodated them, but changed the point of view to a more neutral stance. Certainly more could be done to improve the article, but as with everyone else, my time is limited.
Moreover, much of the writing in the original article is very hard to understand. I tried to preserve those editor's ideas while changing the words to be more clear. To the extent that more needs to be done, I invite others to help.
In addition, my edits have added axioms which a previous commenter indicated were missing. Finally, I hope my changes, will address the criticism of the page as made by User:IvorJ
Cjfsyntropy (talk) 17:07, 9 December 2007 (UTC)
It seems to me that in the sentence "Affine space can also be viewed as a vector space with the subtraction and scalar multiplication operations" we should replace "with" with "without". However, I'm new to the subject, so I would like someone more knowledgeable to concur. Thanks!
JohnFries (talk) 19:45, 13 March 2008 (UTC)
