What is an example of $E/F,L/E$ are normal but $L/F$ is not.
158924
Example of composition of two normal field extensions which is not normal.
119200
When does $\lim_{n\to\infty}f(x+\frac{1}{n})=f(x)$ a.e. fail
117419
Why is $e^{x}$ not uniformly continuous on $\mathbb{R}$?
42013
What is an example of pairwise independent random variables which are not independent?
124997
finding examples for a non negative and continuous function for which the infinite integral is finite but the limit at infinity doesn't exist
79281
Let $f : X \to Y$ be a function and $E \subseteq X$ and $F \subseteq X$. Show that in general
94397
Example of a non-splitting exact sequence $0 → M → M\oplus N → N → 0$
42774
Examples of involutions on $\mathbb{R}$
47937
Example of a Borel set that is neither $F_\sigma$ nor $G_\delta$
59929
Why is $(e_n)$ not a basis for $\ell_\infty$?
135610
How to give an example of a $f$ differentiable in a deleted neighborhood of $x_0$ such that $\lim_{x\to x_0}f^\prime(x)$ doesn't exist?
136592
Examples of manifolds that are not boundaries
79011
If $(F:E)<\infty$, is it always true that $\operatorname{Aut}(F/E)\leq(F:E)?$
101701
Prove that $\ln x$ is not uniformly continuous on $(0,1]$
34798
Example of element of double dual that is not an evaluation map
131424
which of the following is NOT a possible value of $(e^{f})''(0)$??
62581
What is an example that a function is differentiable but derivative is not Riemann integrable