Baby Dragon
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 2d awarded Popular Question Feb 28 awarded Yearling Aug 31 awarded Nice Answer Aug 6 awarded Necromancer Jun 10 comment KKT conditions for a convex optimization problem with a L1-penalty and box constraints Stephen Boyd's Lectures go into this. stanford.edu/class/ee364b/videos.html He also has slides if you want to get to the answer more quickly. Jun 4 answered How to think of a set? Jun 1 comment Determine whether or not the limit exists: $\lim_{(x,y)\to(0,0)}\frac{(x+y)^2}{x^2+y^2}$ I think our answers are off by an arctan or tan depending on one's point of view. May 31 comment Determine whether or not the limit exists: $\lim_{(x,y)\to(0,0)}\frac{(x+y)^2}{x^2+y^2}$ @LuisFelipeVillavicencioLopez You may be right, you may be wrong:). This answer is not the easiest answer to read. Of course such sentiments would be appropriate on MathOverflow. May 31 comment Determine whether or not the limit exists: $\lim_{(x,y)\to(0,0)}\frac{(x+y)^2}{x^2+y^2}$ @LuisFelipeVillavicencioLopez I do not particularly care about the down vote per se. I would not mind addressing any questions about the answer though. May 31 answered Determine whether or not the limit exists: $\lim_{(x,y)\to(0,0)}\frac{(x+y)^2}{x^2+y^2}$ May 31 comment Would the professor take me seriously? If there is a professor that you already have a relationship with, that would be ideal. For instance, maybe someone that you did an independent study with. If that is not the case, it could still make a good independent study and/or be a good way to start such a relationship. May 11 awarded Nice Answer May 10 revised Is there any way to define arithmetical multiplication as other thing than repeated addition? added 85 characters in body May 10 revised Is there any way to define arithmetical multiplication as other thing than repeated addition? added 85 characters in body May 10 answered Is there any way to define arithmetical multiplication as other thing than repeated addition? May 9 comment Best Fake Proofs? (A M.SE April Fools Day collection) @SufyanNaeem That is exactly what makes it nice, at least in the context of teaching. I have seen way to many textbooks and instructors, either gloss over theses conditions or not even mention them. It is something of a pet peeve of mine. Apr 26 comment Proving $\neg ( \neg \alpha \wedge \neg \neg \alpha )$ @ZeRubeus There is "possibility" in modal logic. So maybe there is maybe in logic :D Apr 21 awarded Pundit Apr 21 comment Some topologies are more equal than others @DRF The argument that I was implicitly making is that different languages can and often do provide new insights into a statement or series of statements, even when the translation is rather trivial. I was being flippant about it though ;) Apr 21 comment Some topologies are more equal than others One could also argue that the difference between "je sues Baby Dragon" and "I am Baby Dragon" is just words, but one would not argue that one should not learn French.