Larry Wang
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 Nov16 awarded Nice Answer Oct27 awarded Good Question Oct25 awarded Nice Answer Oct19 awarded Suffrage Oct5 revised GRE past papers added tag education Oct5 revised How do I apply a Gaussian Blur (low-pass filter) to an image made up from a set of points? add tag signal-processing Oct5 revised How do I apply a Gaussian Blur (low-pass filter) to an image made up from a set of points? added link Oct5 revised How do you show that $d\theta = \frac{x dy - y dx }{x^2 + y^2}$? frac -> dfrac for visibility Sep30 revised Help with a proof: Given $a\ne 0$ and $b\ne 0$ and $a \lt \frac{1}{a} \lt b \lt \frac{1}{b}$. Prove $a\lt -1$ added tag algebra-precalculus, replaced != with ≠ for clarity Sep28 revised Party planning problem add tag algorithms Sep28 comment Why do statements which appear elementary have complicated proofs? @Qiaochu: Users are only notified when addressed by @ if they have previously commented on the same post. See the faq on meta.so. Sep25 comment Group Law for an Elliptic curve @muad: This phenomenon is known as the bikeshed problem, and the most constructive way to change it is to share this question (and others you think deserve more love) with people who might be interested in it. Sep25 comment Why do statements which appear elementary have complicated proofs? I've changed the title to more closely reflect what the question seems to be asking, but I'm not convinced that it's any 'better'... Sep25 comment Why do statements which appear elementary have complicated proofs? Discussion of whether this question is appropriate should take place on meta. Sep25 revised Why do statements which appear elementary have complicated proofs? edited title to be closer to last paragraph of question Sep25 revised Why do statements which appear elementary have complicated proofs? +tag philosophical Sep24 comment Types of infinity Possible duplicate: math.stackexchange.com/questions/1/… Sep21 comment Free resources to start learning Discrete Mathematics This question is actually a superset of the first question I linked to above, so perhaps that one (about books) should be considered a duplicate of this? Sep21 comment Free resources to start learning Discrete Mathematics See the suggestions given in math.stackexchange.com/questions/1533/… and math.stackexchange.com/questions/350/…. Sep21 comment Indirect proof that sum of first n even numbers is $n^2 + n$ The picture here may give you some ideas.