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Top Questions
37 votes

Why doesn't Cantor's diagonal argument also apply to natural numbers?

analysis elementary-set-theory asked Apr 26 '11 at 0:29
math.stackexchange.com

28 votes

How strong is this conjecture? $(Z/nZ)^*$ is generated by “small” elements

nt.number-theory reference-request gr.group-theory computational-complexity riemann-hypothesis asked May 11 '14 at 1:50
mathoverflow.net

25 votes

“Scaled $L^p$ norm” and geometric mean

measure-theory lp-spaces asked Jan 19 '13 at 21:10
math.stackexchange.com

21 votes

Is $e^x$ the only isomorphism between the groups $(\mathbb{R},+)$ and $(\mathbb{R}_{> 0},*)$?

group-theory group-isomorphism asked Feb 13 '13 at 16:34
math.stackexchange.com

20 votes

How to prove Chebyshev's result: $\sum_{p\leq n} \frac{\log p}{p} \sim\log n $ as $n\to\infty$?

sequences-and-series number-theory prime-numbers analytic-number-theory asked Apr 20 '11 at 2:38
math.stackexchange.com

18 votes

Precise definition of “weaker” and “stronger”?

logic terminology definition asked Jul 25 '11 at 17:38
math.stackexchange.com

18 votes

Space of probability measures “complete”? (In the other sense)

analysis measure-theory asked Jan 31 '13 at 18:02
math.stackexchange.com

18 votes

What's harder: Shuffling a sorted deck or sorting a shuffled one?

algorithms algorithm-analysis information-theory permutations entropy asked Apr 14 '13 at 3:49
cs.stackexchange.com

13 votes

Do we have any nontrivial uniform circuits?

cc.complexity-theory circuit-complexity uniformity asked Jun 6 '14 at 7:01
cstheory.stackexchange.com

10 votes

When checkmate is impossible in a position

endgame rules checkmate chess-algorithms asked Jun 28 '18 at 23:45
chess.stackexchange.com

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Top Answers
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Why do roots of polynomials tend to have absolute value close to 1?
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44
What exactly (and precisely) is “hash?”
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35
Pressure to defend the relevance of one's area of mathematics
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How does Asimov's second law deal with contradictory orders from different people?
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How to create better user account creation experience for customers who do not want to create an account
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What is the most useful non-existing object of your field?
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Examples of intuition from fields other than Physics to solve math problems
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Why do computer-science majors learn calculus?
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Explain why “Who is she playing the piano?” is incorrect
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Did Alan Turing's student Robin Gandy assert that Charles Babbage had no notion of a universal computing machine?
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19
Examples of successful derandomization from BPP to P
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19
Is the open question NP=co-NP the same as P=NP?
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19
What does “Scientists rise up against statistical significance” mean? (Comment in Nature)
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17
Is BPP vs. P a real problem after we know BPP lies in P/poly?
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15
What is a naive method?
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Does forcing TMs to change all symbols they read change their power?
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What is a natural problem in theory of computation?
cstheory.stackexchange.com

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Showing “this is secure” on credit card entry screen
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14
Differences and relationships between randomized and nondeterministic algorithms?
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Why is the clique problem NP-complete?
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14
Suppose $\mathbf{P} = \mathbf{BQP}$. Then what is randomness? Would it even exist at all?
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13
Why is this argument for $P\neq NP$ wrong?
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12
Possible definitions of exponential function
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NP Problems with unique solution
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if I were to define a new complexity class how should I start?
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11
Arguments for/against Kolmogorov's conjecture about the circuit complexity of P
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11
In what rigorous sense are Sperner's Lemma and the Brouwer Fixed Point Theorem equivalent?
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What's the complexity of counting odd nodes in graph?
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11
Do I have to make someone coauthor if he/she solves a problem in StackExchange, asked by myself, which is later used in my paper?
academia.stackexchange.com

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