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20m ago
Asymptotic analysis - if f(n) = Ω(g(n)), how to prove ln(f(n)) = Ω(ln(g(n)))?
— Ondřej Mirtes
1084
7h 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
15h 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
16h ago
Equation of a line passing through a point and forming a triangle with the axes
— Val Kalinic
1085
19h 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
22h ago
Behaviour of $f$ in the neighbourhood of $c$ if $f'(c)= \cdots = f^{(n)}(c)=0$, and $f^{(n+1)}(c) \gt 0$
— mathmo
33
1d ago
prove that a non-abelian group of order $10$ must have a subgroup of order $5$.
— user79130
253
1d ago
initial value problem: y'' + 4y = f(t) , y(0)= y'(0)=0. f(t) = { 0 if t <3; t if t >3}
— Gina Kousalis
134
