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3h ago
1D Heat equation $x\in(0,L)$ with mixed boundary conditions $u_x(t, 0)=-1$, $u(t, L)=0$
— chthonicdaemon
1084
5h ago
$\int_0^\infty f\,dx$ exists, then there is $g$ such that $\lim_{x \to \infty}\frac{g(x)}{f(x)}=\infty$ and $\int_0^\infty g\mathrm\,dx$ exists
— shmuel
382
6h ago
Dose pointwise equicontinuous and uniformly equicontinuous implies compactness?
— Mohammadreza Taesiri
132
8h ago
How is “n+n/2+n/4…1” equal to “2n-1” using the formula for geometric series?
— Rüppell's Vulture
1084
1d ago
Asymptotic analysis - if f(n) = Ω(g(n)), how to prove ln(f(n)) = Ω(ln(g(n)))?
— Ondřej Mirtes
1084
1d ago
Approximating sums of powers of integers: why does $\sum_{i=1}^n i^r \div \frac{n^{r+1}}{r+1} \to 1$ as $n \to \infty$?
— Marius Kempe
31
1d ago
Is $\tau(x,y)\leq\sqrt{n}d(x,y)$ where $d$ is the Euclidean metric, and $\tau$ the taxicab metric?
— Jong Gim
132
1d ago
Equation of a line passing through a point and forming a triangle with the axes
— Val Kalinic
1085
2d ago
If for every $x_n$ such that $x_n \rightarrow x$, there exists a $x_{n_k}$ such that $Tx_{n_k} = Tx$, is $T$ continuous?
— user79184
134
