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Stephen Nand-Lal
  • Member for 9 years
  • Last seen more than 1 year ago
  • Liverpool, UK
0 answers
526 votes
19k views
161 bookmarks
Does there exist a bijection of $\mathbb{R}^n$ with itself such that the forward map is connected but the inverse is not?
9 answers
184 votes
15k views
193 bookmarks
"Advice to young mathematicians"
1 answer
123 votes
4k views
58 bookmarks
Is There An Injective Cubic Polynomial $\mathbb Z^2 \rightarrow \mathbb Z$?
0 answers
33 votes
815 views
6 bookmarks
Closed model categories in the sense of Quillen [1969] vs the modern sense
2 answers
12 votes
1k views
5 bookmarks
How much is cohomotopy dual to homotopy?
1 answer
8 votes
764 views
2 bookmarks
Geometric realization of function complexes of simplicial sets
0 answers
8 votes
388 views
3 bookmarks
Motive of a curve and its Jacobian
3 answers
6 votes
3k views
3 bookmarks
Distance between two barycentric coordinates
0 answers
6 votes
324 views
1 bookmarks
Transfinite composition
1 answer
5 votes
544 views
1 bookmarks
Reduction of Factoring to Order Finding
1 answer
4 votes
111 views
1 bookmarks
Decomposition of a fibration into a retraction followed by a minimal fibration
2 answers
3 votes
1k views
2 bookmarks
Is this modified coffee cup equivalent to some n-fold torus?
0 answers
3 votes
73 views
3 bookmarks
Finite strings of integers from $\{1,1,2,2,\ldots,n,n\}$ such that there are $k$ elements between the two $k$s
0 answers
2 votes
70 views
1 bookmarks
Multidegree semi-invariants for quiver representations
0 answers
2 votes
103 views
1 bookmarks
A Homeomorphism that is not unique even upto Isotopy
1 answer
0 votes
45 views
1 bookmarks
Find $a$, $b$ and $c$ that satisfies the given equation.