New posts in Upper Lower Bounds

Given $n+1$ points, bound the product of the distances from one of them

Infection spread on a torus chessboard

Find $\sup _\limits{Q \in M_{4\times 2} (\mathbb{R}), Q^{T} Q=I_{2}} \operatorname{tr}\left(Q^{T} A Q\right)$

Is $\limsup_{t} \frac{a_t}{ h(t+1) - h(t) }$ finite when $0 \leq \sum_{i=t}^\infty a_i \leq h(t) = t^{-\alpha}$?

Suppose each $x_{n+1} \le \left(\sum_{i=1}^n x_i \right)^{-c}$ for some $c \in (0,1)$. How quickly can $\sum_{i=1}^n x_i $ grow?

finding bounds for $\int_0^X\lfloor x^2\rfloor \, dx$

Bounds of $1^n + 2^{n-1} + 3^{n-2} + \cdots + n^1$

Improve upper bound for double sum

Inequalities to give bounds on generalised harmonic numbers?

Show That a Power Of 17 Exists Between $2^{16},2^{17}$