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 Jun 17 accepted How to maximize scalar product using Lagrangian methods Jun 15 revised How to maximize scalar product using Lagrangian methods added 3 characters in body Jun 15 comment How to maximize scalar product using Lagrangian methods You're quite right, I want to add $x_i \ge 0$ as a feasibility constraint, otherwise there is an arbitrage. But all vectors in the problem are on $\mathbb{R}_+$. Jun 15 asked How to maximize scalar product using Lagrangian methods May 17 awarded Yearling Mar 6 comment Is there a notation for $f(x,y) - f(y,x)$? @vrich There would be no point defining a special notation for something that is used to mean 0. Dec 22 accepted Connection between dual space V* and negation P^c Dec 22 asked Connection between dual space V* and negation P^c Sep 26 answered Calculate $2^{1401} \pmod{2803}$ May 17 awarded Yearling Feb 10 comment If a series converges, then the sequence of terms converges to $0$. That's fine. The standard argument goes $a_n = \sum_{i}^n a_i-\sum_{i}^{n-1}a_i\to L-L=0$ as $n \to \infty$. Feb 10 awarded Organizer Feb 10 revised Favourite proofs with a visualization added soft-question tag Feb 10 suggested approved edit on Favourite proofs with a visualization Feb 8 awarded Scholar Feb 8 accepted Table of pdfs, cdfs, moments Feb 8 asked Table of pdfs, cdfs, moments Feb 5 comment Is there a notation for $f(x,y) - f(y,x)$? I really like $[x,y]_f$. Feb 5 awarded Student Feb 5 asked Is there a notation for $f(x,y) - f(y,x)$?