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5
Examples of common false beliefs in mathematics.
12
What are examples of mathematical concepts named after the wrong people? (Stigler’s law)
8
What is your favorite proof of Tychonoff’s Theorem?
2
How to understand the concept of compact space
10
“Transitivity” of the Stone-Cech compactification
8
Is “compact implies sequentially compact” consistent with ZF?
3
Why is the Hahn-Banach thorem so important?
3
Which topological spaces admit a nonstandard metric?
8
Does “compact iff projections are closed” require some form of choice?
3
What does the property that path-connectedness implies arc-connectedness imply?
18
sets with positive Lebesgue measure boundary
3
Connectedness and the real line
1
totally disconnected and zero-dimensional spaces
7
When factors may be cancelled in homeomorphic products?
2
A Bijection Between the Reals and Infinite Binary Strings
2
Stone-Čech compactification of $\mathbb R$
8
Independent families of subsets of $\mathbb N$ of size continuum
1
A good place to read about uniform spaces
5
Products of Baire spaces
1
Axiomatic Set Theory
1
End point compactification for metric spaces
2
Bijective function on a dense set
4
A unique ultrafilter extending a union of filters?
5
Continuously selecting elements from unordered pairs
1
Topology on the set of linear subspaces
4
Iterated forcing and CH
9
0-dimensional locally compact space
1
A question about local connectedness in metric spaces
7
Are k-spaces named for Kelley?
3
Relatively countably compact subsets without countably compact closure.
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