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-1 votes
0 answers
8 views

Can segment-level modular analysis provide meaningful insight into the Collatz problem?

46 votes
9 answers
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What is the oldest open math problem outside of number theory?

8 votes
3 answers
196 views

Can a sentence and its negation both be $\Sigma_2$-conservative over ZFC?

1 vote
1 answer
250 views

On properties of quotients on the form $G \rightarrow G/H$ for $H \subseteq G$ a closed subgroup scheme

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7 views

Are positive functions in the reversible part of the JdLG-decomposition

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2 answers
74 views

Symmetric matrix inversion if diagonalization in larger dimension is known

1 vote
1 answer
158 views

Where does Concorde spend its time

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46 views

Positive roots of real exponents function

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48 views

Are additive structures on a category unique?

19 votes
2 answers
660 views

Can every Sidon set of size 3 be extended to a finite perfect difference set?

1 vote
1 answer
56 views

A $q$-analogue of the inequality for prime gaps

8 votes
2 answers
648 views

Result seemingly quoted from SGA

11 votes
1 answer
217 views

A query regarding maximal subgroups of a finite non-solvable group

1 vote
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51 views

Multinomial cumulative logit

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