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List Question

A sequence $(t_{k,n})$ st $\forall n$, $\sum_{k=1}^n t_{k,n}=1$ but $\lim_n t_{k,n} \neq 0$.

A counter example of best approximation

Lower Semicontinuity Concepts

Can we get un-obvious results by defining sophisticated topologies?

For this periodic continuous $g:\Bbb R\to \Bbb R$, and $f_n(x):=g(x/n)$, does $\{f_n\}_{n=1}^\infty$ converge uniformly?

Other guises for the vector space $\mathbb{R}^n$?

Is every monoid isomorphic to its opposite

A question on locally compact metalindelöf spaces

Groups with $\wedge$-irreducible trivial subgroup

Why Does the existence of $\frac{\partial f}{\partial x}$ not imply that $\frac{\partial f}{\partial x}$ is continuous?

Is there a first countable, 0-dimensonal, locally compact, lindelöf, non-compact space?

how to solve a third degree equation of complex roots and coefficients

Counterexample to Eisenstein criterion

A non-exponentially bounded analytic function?

Examples of affine schemes

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