Jacob
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 Aug18 comment Convex optimization approximation @Adam: The problem is fairly simple in $\mathbb{R}^2$ ; is that your goal or are you looking for a general solution? Aug14 comment Get neighbors for N dimensional square @wonko: It would be more productive if you flagged such posts for moderator attention. Jul30 comment How to efficiently compute the pareto front in a >2 dimensional multi-objective case? Seems to be a very poorly written paper which only claims to improve the best-case complexity ; I would stick to Kung's algorithm. Aug28 comment Find the farthest points in d-dimensional space Why were you interested in a $O(n\cdot 2^d)$ algorithm? Aug19 comment Cartesian Product @DanielFischer: Looks good and easy to understand ; please post as an answer. Jun2 comment Integer Linear Programming (ILP): NP-hard vs. NP-complete? I see. That decision problem is certainly in NP. But is there a polynomial-time algorithm which can use this decision problem to solve the optimization problem? For example, how do you handle unboundedness, and feasibility? Apr17 comment Is this a valid way to evaluate a function based on factorials? What would be a better way? Woah. Where do you usually see such functions? Apr9 comment Matrix calculus : Find the gradient/derivative? $\partial(\operatorname{tr}(Z^T A Z))/\partial X= (A+A^T)X$. Is $A$ symmetric? Apr8 comment How do I write it as a sum of a vector and other vector in the orthogonal complement of span? Welcome to MathSE! I noticed you've asked a few questions but have not accepted any answers. If you found any answers useful, you should start accepting them. Apr4 comment Prove that the sequence is bounded. Thanks for your explanation! Apr4 comment Prove that the sequence is bounded. Can't we find $M$ by taking the limit as $n \to \infty$ (i.e. $M = 2/3$)? Apr4 comment Matlab coding help @DramaFreak: You should start accepting answers. Note that it goes with asking questions. Mar28 comment Find the maximum dimensions that will strengthen rod Or is the strength proportional to $bh^2$ and not $(bh)^2$? Mar28 comment Find the maximum dimensions that will strengthen rod So ... fit the biggest isoceles triangle in a circle of fixed diameter? Mar25 comment Definition of sets You could say $p \in \mathbb{R}^2$ where $p = [x \quad y]^T$. So, $p$ is a point in $\mathbb{R}^2$ space. Mar22 comment What does O(n+k) mean verbally @PooyaM: Don't you mean when $M = f(n)$? Mar19 comment Two linearly independent vectors perpendicular to vector $u$ What does the equation $4x + 7y -9z = 0$ mean? It certainly means any point satisfying that equation is perpendicular to your vector. What does it mean graphically? Mar18 comment Using the digits $7,7,7,7,1$ and the operators $+,-,*,/$ to make a formula which equals $100$ I'm assuming you can only use the digits once? And you can concatenate the digits to form number? Mar7 comment What was the first bit of mathematics that made you realize that math is beautiful? (For children's book) +1 for $n(n+1)/2$. I "proved" this in the 5th grade using the same method :). Mar7 comment Optimizing over norms of set of equations. Are you looking for a closed-form solution, code ... ?