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Michael Weiss
  • Member for 9 years, 2 months
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17 votes
2 answers
1k views

Is the torus the union of two connected, simply-connected open sets?

14 votes
1 answer
762 views

Is there a domain in $\mathbb{R}^3$ with finite non-trivial $\pi_1$ but $H_1=0$?

11 votes
1 answer
1k views

History of terminology: sheaves, presheaves, etc.

7 votes
1 answer
286 views

Are all elliptic curves from $w^3 = \text{cubic}(z)$ isomorphic?

4 votes
0 answers
91 views

Why is Feferman's generic hyperarithmetic set not implicitly definable?

4 votes
1 answer
494 views

Simple applications of forcing in recursion theory?

2 votes
1 answer
279 views

Riemann surface for Gaussian integral $\int \exp(z^2)dz$

2 votes
1 answer
269 views

Is the monoid "group of units" functor (right adjoint to forgetful functor) full?

1 vote
0 answers
64 views

Is there a "non-contrived" topological example where regular epics are not closed under composition?

1 vote
1 answer
49 views

Local homeomorphisms: terminology

0 votes
1 answer
63 views

Terminology: arithmetic vs. expressible vs. represented

0 votes
0 answers
55 views

Killing inconsistencies: the path to understanding