Larry Wang
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 Sep15 revised Improve my proof about this $C^\infty$ function removed remark on tex that is no longer relevant Sep15 revised Wedge product and cross product - any difference? added link to mentioned article Sep15 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? Sep14 revised Voronoi decomposition implementation in four dimensions? added tags to get attention of the appropriate mathematicians Sep13 awarded Taxonomist Sep13 revised Euler class and Vandermonde polynomial added 44 characters in body; added 36 characters in body Sep13 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)? Sep13 revised $\sqrt a$ is either an integer or an irrational number. put bill's note in quotes Sep11 revised Solving Compositions of Functions Algebraically edited tags Sep11 revised How to reduce lower one number, while another number increases goes up increments retagged Sep11 comment A challenge by R. P. Feynman: give counter-intuitive theorems that can be translated into everyday language Edited to use SO's image hosting instead of mine Sep11 revised A challenge by R. P. Feynman: give counter-intuitive theorems that can be translated into everyday language changed to use SO image hosting Sep10 comment stopping time and martingale @whuber: See the edit history for this question. As you can see, when @Mariano posted his comment, the title was "general question," which I agree doesn't help people figure out what is being asked. Sep10 comment Why is median age a better statistic than mean age? Why do you say the mean should be lower than the median? While not always true, I would typically expect the mean to be higher if the distribution is positively skewed as age is. Sep10 comment Tiling Posters on a Wall Can any be turned sideways? Sep10 revised Why is median age a better statistic than mean age? edited tags Sep10 comment Terminology for handling probabilities with partial knowledge When you say "the person might know that 1/3 of fish are red," is this for all fish, or for the same species as "we" know about? Maybe your question could be more clear if you name the people and the fish. Sep10 revised evaluating $\lim_{\tau\rightarrow \infty} \int_{-c/\tau}^0 e^{-\beta x}(\tau x+c)^{(\lambda/\tau) -1}dx$ add calculus tag, insert question into title Sep9 revised if eigenvalues are positive, is the matrix positive definite? inverse =>converse to fit the rest of the sentence Sep8 awarded Nice Answer