Larry Wang
Reputation
3,683
Top tag
Next privilege 5,000 Rep.
Approve tag wiki edits
 Sep20 revised How do I prove that $x^TAy = y^TAx$ if A is symmetric? texed equation, put question in title, add homework tag per question body Sep17 revised Given a collection of items, how many ordered subsets can I make? texed sum, better title, tag -permutations +combinatorics Sep17 comment Given a collection of items, how many ordered subsets can I make? @AvatarOfChronos: To add on to Moron's comment, you can right-click any existing formulas and click 'show source' to see how to write something similar, or see your edited question. For more details, see the proposed faq. Sep17 revised How many 7-digit even numbers less than 3000000 can be formed using all the digits 1,2,2,3,5,5,6? tag -permutations +combinatorics Sep17 revised Wedge product and cross product - any difference? removed unhelpful tag [vector], added tag [terminology] (maybe should be notation?) Sep17 revised What are the names of graphs with 2 in/outbound edges? added [terminology] tag Sep16 comment Optimal sample size? See the proposed faq on meta for some pointers on how to type math here. Sep16 revised Optimal sample size? forgot the $; added 1 characters in body Sep16 revised Counting placing items in bins according to boolean restrictions added text of moron's answer Sep16 comment What is the meaning of the double turnstile symbol ($\models$)? TeX fixed - see meta.math.stackexchange.com/questions/692/… Sep16 revised If$x$is a$p$-value, what do we call$x\cdot (1-x)$? made title specific, tag [name] -> [terminology] Sep16 revised What is the meaning of the double turnstile symbol ($\models$)? unsupported \implies and \vDash changed to \Rightarrow and \models Sep16 answered If$x$is a$p$-value, what do we call$x\cdot (1-x)$? Sep15 comment Is this proof of$a^{1/2}$being either integer or irrational circular/incorrect? Closing for 3 votes + Isaac♦ and myself Sep15 comment fast and reliable method for testing invertibility of Hermitian Toeplitz matrix See also Mathworld and Wikipedia's descriptions of the condition number. If you are using some linear algebra library, note that many calculate the reciprocal of the condition number by default. Sep15 revised Is this proof of$a^{1/2}$being either integer or irrational circular/incorrect? nice-ified title. "bogus" quote now only remains in question body Sep15 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) Sep15 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. Sep15 comment Improve my proof about this$C^\infty$function If you have questions about typing cases and other constructs, see meta. Sep15 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.