User talk:Kinewma

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Rectangle
This 2009-AUG-26 edit by you radically changed the lede - including even the definition -- of rectangle. I am thinking this might be some kind of mistake. I have searched for sources to support your edits - and can only find mirrors of wikipedia. Admittedly there IS a shape that is referenced to as a "crossed rectangle", but I can find no source that anyone considers them to be rectangles. You provided no source that anyone does, nor any source that any mathematicians talk about "complex rectangles"

It seems to me that "crossed rectangles" are given that name because a 3 dimensional wire-frame rectangle that has been twisted would have that shape. A twisted shape is no longer the same shape it started as. "Cross rectangles", it would seem, are no longer rectangles, just as one folded in half would no longer be a rectangle.

The best I can find is this: "An equiangular quadrilateral is a rectangle if convex, and an "angular eight" with corners on a rectangle if non-convex." at http://www.google.ca/imgres?imgurl=http://www.scientific-web.com/en/Mathematics/Geometry/images/Quadrilateral2.png&imgrefurl=http://www.scientific-web.com/en/Mathematics/Geometry/Quadrilateral.html&h=546&w=439&sz=34&tbnid=aVnI35NJLQIezM:&tbnh=251&tbnw=202&prev=/images%3Fq%3Dequiangular%2Bquadrilateral&usg=__YqmeQj60_YmSg_s1DT2QVuqYjOA=&ei=MEzRS_OwKYXitgOW8PTFCQ&sa=X&oi=image_result&resnum=2&ct=image&ved=0CAYQ9QEwAQ

Do you have any sources for any of this? --JimWae (talk) 08:16, 23 April 2010 (UTC)

According to the wiki article on them, quadrilaterals are simple (not self-intersecting) or complex (self-intersecting), also called crossed elsewhere. The terms apply equally to rectangles, since they are just a subset of quadrilaterals. It's as simple as that. Forget 3D wire frames.

Since crossed quadrilaterals are quadrilaterals, crossed rectangles are definitely rectangles and should be included in the definition of rectangles.

The incentres of the four triangles each with 3 of the 4 vertices of a cyclic quadrilateral lie at the vertices of a rectangle PQRS. According to http://math.kennesaw.edu/~mdevilli/cyclic-incentre-rectangle.html when the cyclic quadrilateral becomes crossed, PQRS also becomes a 'crossed rectangle'. You just have to drag a point on the animation and the rectangle becomes crossed, showing that a crossed rectangle is a type of rectangle, just as a crossed quadrilateral is a type of quadrilateral.

Crossed rectangles are NOT equiangular. I read somewhere that the 4 angles of a crossed quadrilateral comprise two reflex angles and two non-reflex angles. But the fact that the sum of the angles of a quadrilateral is 0 (mod 2pi) also shows that a crossed rectangle isn't equiangular. Kinewma (talk) 05:09, 27 April 2010 (UTC)

I've updated the rectangle article to say that so-called 'crossed rectangles' are neither rectangles nor equiangular.Kinewma (talk) 03:47, 28 April 2010 (UTC)

Welcome to Wikipedia. Everyone is welcome to contribute to the encyclopedia, but when you add or change content please cite a reliable source for the content of your edit. This helps maintain our policy of verifiability. Take a look at Citing sources for information about how to cite sources and the welcome page to learn more about contributing to this encyclopedia. Thank you. — Jeff G. ツ 21:45, 13 July 2010 (UTC)

DOB
Hi these dob s you are adding have you got reliable citations for them?

For one example this one, which citation is it in, as I can't see it in any? Stephen_Metcalfe_(UK_politician) Off2riorob (talk) 00:24, 24 July 2010 (UTC)

this one also, Steve_Rotheram ? Where is the citation to support the dob you added? Off2riorob (talk) 00:28, 24 July 2010 (UTC)

c.99% of living people don't have a citation for their date of birth (should they?), but the date of birth can sometimes be found in one or more of the external links. In the case of current MPs, most dobs in WP are on the BBC News Democracy Live website (see Aidan Burley for example) but that and other external links have yet to be added to many MPs' pages.Kinewma (talk) 00:44, 24 July 2010 (UTC)

Please stop adding uncited Date of births, or anything else uncited for that matter to any article and either add a citation or revert these edits that you have made. Yes, all DOB need citations. Off2riorob (talk) 12:47, 24 July 2010 (UTC)

WP:Verifiability says 'in practice not everything need actually be attributed'. The 650 current MPs are in category UK MPs 2010-. Hardly any (2?) of them (with birthdates before I added any) or other living people I've looked at have sourced birthdates and nowhere does it say all dobs need citations. Maybe it should so I've added citations to those dobs I've added (will check for any I've missed). It clearly isn't policy for all dobs to have citations else why have all the experienced editors who've edited high-profile people (such as MPs David Cameron, Nick Clegg, Gordon Brown etc) not seen fit to do so? Kinewma (talk) 06:25, 25 July 2010 (UTC)

The 3*2^n±5,7 "conjecture"
Good job! I was too lazy to write the Mathematica script when I saw that ridiculous "conjecture", but for n=18 I guess I could have checked it by hand... Owen&times; &#9742;  07:53, 23 August 2010 (UTC)


 * Numbers written down then factored using Wolfram Alpha but easy by hand. Ridiculous conjecture true for n<18 but 3*2^18-7 = 786425 = 5^2*83*379, 3*2^18-5 = 43*18289, 3*2^18+5 = 17*46261, 3*2^18+7 = 23*31*81103. Kinewma (talk) 20:00, 23 August 2010 (UTC)


 * Yes, I checked the factors before I wrote this. Pretty small factors, too. He can't use Fermat's excuse for 2^2^5+1. Owen&times; &#9742;  22:07, 23 August 2010 (UTC)

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