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May
16
revised Interpreting a condition about CDF
added 624 characters in body
May
15
revised Need help understanding compact embedding of hilbert spaces
added 657 characters in body
May
15
comment Need help understanding compact embedding of hilbert spaces
You don't, because it isn't.
May
15
answered Visual proof of $\sum_{n=1}^\infty \frac{1}{n^4} = \frac{\pi^4}{90}$?
May
15
comment Are functions with singularities, but no poles, manipulable by Residue Calclus?
What's impossible? It's just that there are infinitely many residues to sum. But the sum appears to converge nicely.
May
15
revised Are functions with singularities, but no poles, manipulable by Residue Calclus?
added 68 characters in body
May
15
answered Are functions with singularities, but no poles, manipulable by Residue Calclus?
May
15
answered 2 questions in Number Theory about primitive roots/quadratic residue
May
15
comment Simple Probability Question; Finding out the conditional probability
Fun fact: since doctors prefer not to work on weekends, in many countries significantly fewer babies are born on Saturday and Sunday than on other days of the week. If these are students in the same year of school, and therefore likely to have been be born in the same year, the assumption that each day has probability $1/7$ is not realistic.
May
15
revised Need help understanding compact embedding of hilbert spaces
deleted 296 characters in body
May
15
revised Need help understanding compact embedding of hilbert spaces
deleted 296 characters in body
May
15
answered Need help understanding compact embedding of hilbert spaces
May
15
comment Why do I get a big error when I compute this integral with Gauss-Legendre Quadrature?
It's a very well-behaved integral. It's quite likely you've made a mistake, or maybe you're just using a very small $n$.
May
15
comment Use generating function to find coefficient
You're not really using a generating function: it is a generating function for the coefficients.
May
15
revised Interpreting a condition about CDF
added 254 characters in body
May
15
answered Interpreting a condition about CDF
May
15
answered Question in Algebraic closed field
May
15
asked Integer solutions of $x^3 = 7y^3 + 6 y^2+2 y$?
May
14
answered If $a,b,c, \frac{a}{b}+\frac{b}{c}+\frac{c}{a}, \frac{b}{a}+\frac{c}{b}+\frac{a}{c} \in \mathbb{Z}$ prove that $\displaystyle |a|=|b|=|c|$.
May
14
comment Case of equality in Bernoulli's inequality
If $f(x) = (1+x)^n - 1 - n x$, we have $f(0) = 0$ and $f'(x) = n ((1+x)^{n-1} - 1)$. Thus $f'(x) > 0$ if $x > 0$ and $< 0$ if $-1 < x < 0$. We conclude that $f(x)$ has no zeros for $x \ge -1$ other than $0$.