A question about Infimum.
114786
Question about Infimum. (conclusion about intersection)
68752
A few questions about infinite derivative.
16647
Is the world $C^\infty$?
149853
What infinity is greater than the continuum? Show with an example
84890
Extremising a functional with conditions
52880
Intuition: If $a\leq b+\epsilon$ for all $\epsilon>0$ then $a\leq b$?
73881
A question on numerical range
19741
If $(\mu_t)_{t\in I}$ and $(\mu_t\ast\nu_t)_{t\in I}$ are tight, then $(\nu_t)_{t\in I}$ is tight
27290
What Does it Really Mean to Have Different Kinds of Infinities?
77855
Prove that if $A$ has a maximum, then the maximum must be the supremum
5105
Alternative definition of $\|f\|_{\infty}$ as the smallest of all numbers of the form $\sup\{|g(x)| : x \in X \}$, where $f = g$ almost everywhere
145712
The amount of VS The number of, etc
21954
A question about $f(x)\equiv 0$
142519
Uniqueness and Existence problem
125204
Is the second defined arbitrarily?
117117
To the power of in C?
49929
If $ \lim_{n \to \infty} (2 x_{n + 1} - x_{n}) = x $, then is it true that $ \lim_{n \to \infty} x_{n} = x $?