Larry Wang
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 Sep 16 revised If $x$ is a $p$-value, what do we call $x\cdot (1-x)$? made title specific, tag [name] -> [terminology] Sep 16 revised What is the meaning of the double turnstile symbol ($\models$)? unsupported \implies and \vDash changed to \Rightarrow and \models Sep 16 answered If $x$ is a $p$-value, what do we call $x\cdot (1-x)$? Sep 15 comment Is this proof of $a^{1/2}$ being either integer or irrational circular/incorrect? Closing for 3 votes + Isaac♦ and myself Sep 15 comment fast and reliable method for testing invertibility of Hermitian Toeplitz matrix See also Mathworld and Wikipedia's descriptions of the condition number. If you are using some linear algebra library, note that many calculate the reciprocal of the condition number by default. Sep 15 revised Is this proof of $a^{1/2}$ being either integer or irrational circular/incorrect? nice-ified title. "bogus" quote now only remains in question body Sep 15 comment Direct proof that f(x)=x sin(1/x) does not satisfy Lusin N condition @Myke: I believe \sout requires the ulem package, which is not installed. The html way is to use text (or text) Sep 15 comment How can I pack $45-45-90$ triangles inside an arbitrary shape ? What Moron stopped short of saying outright is that you can lay your image on top of a square grid, then shade in all squares that are part of the shape (filled or >half filled, for small enough squares it doesn't matter), and bisect them to get the triangles you want. I don't write this as an answer because although it answers your question as written, I think it also suggests some clarifying edits you may wish to make to bring it closer to your 'real' question. Sep 15 comment Improve my proof about this $C^\infty$ function If you have questions about typing cases and other constructs, see meta. Sep 15 comment Is this proof of $a^{1/2}$ being either integer or irrational circular/incorrect? Since @Bill created a meta-question, let's keep the discussion of whether to close or not there. Sep 15 revised Improve my proof about this $C^\infty$ function removed remark on tex that is no longer relevant Sep 15 revised Wedge product and cross product - any difference? added link to mentioned article Sep 15 comment How can I pack $45-45-90$ triangles inside an arbitrary shape ? It's not mentioned in the question, but I guess you would like to use as few triangles as possible to accomplish this? Sep 14 revised Voronoi decomposition implementation in four dimensions? added tags to get attention of the appropriate mathematicians Sep 13 awarded Taxonomist Sep 13 revised Euler class and Vandermonde polynomial added 44 characters in body; added 36 characters in body Sep 13 comment Solving Compositions of Functions Algebraically @Meta: In that case, would you accept Arturo's answer (or your own, if it ended up being significantly different)? Sep 13 revised $\sqrt a$ is either an integer or an irrational number. put bill's note in quotes Sep 11 revised Solving Compositions of Functions Algebraically edited tags Sep 11 revised How to reduce lower one number, while another number increases goes up increments retagged