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user7980
  • Member for 11 years, 5 months
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157 votes
1 answer
19k views

How to determine with certainty that a function has no elementary antiderivative?

  • 1,994
35 votes
2 answers
7k views

necessary and sufficient condition for trivial kernel of a matrix over a commutative ring

  • 217k
31 votes
8 answers
8k views

Is the set of all valid C++ programs countably infinite?

  • 2,666
28 votes
1 answer
2k views

Why do zeta regularization and path integrals agree on functional determinants?

  • 81.2k
9 votes
3 answers
465 views

Prove Inequality $\frac{\left(1-\alpha\right)\left(1+{\alpha}^{k}\right)}{\left(1+\alpha\right)\left(1-{\alpha}^{k}\right)}\geqslant\frac{1}{k}$

  • 7,579
7 votes
1 answer
314 views

Evaluate $\int\limits_{\mathbb{R}^2} \frac{e^{i \langle \xi, x \rangle} d\xi}{ \langle\xi,\theta\rangle}$

  • 8,186
4 votes
2 answers
271 views

Is fractional inverse of a function a known thing?

  • 6,310
2 votes
1 answer
280 views

Sipser's definition of a space constructable function

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