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seen Dec 1 '13 at 4:08

Software Developer at Epic Systems


Sep
16
comment What is the meaning of this symbol ($\models$)?
TeX fixed - see meta.math.stackexchange.com/questions/692/…
Sep
16
revised If x is a p-value, what do we call x*(1-x)?
made title specific, tag [name] -> [terminology]
Sep
16
revised What is the meaning of this 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*(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 <s>text</s> (or <strike>text</strike>)
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
14
comment $\sqrt a$ is either an integer or an irrational number.
@Bill: What I meant was more that if you don't wish to describe what you dislike about this answer in your comments (perhaps it would be too long?), you could also add that information to your own answer and leave a comment here linking to it.
Sep
13
comment $\sqrt a$ is either an integer or an irrational number.
@Arturo: This is the result of a recent change in the stackexchange software. See meta for details.
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)?