List questions from combinatorial-number-theory

Published on 05 Apr 2026 - 18:55

261

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Sequences where each number is a divisor of one less than the next

Published on 17 Mar 2026 - 4:52

533

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Counting/bounding number of relatively prime pairs?

Published on 16 Mar 2026 - 22:45

149

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Counting the Number of Points in an Algebraic Variety

Published on 16 Mar 2026 - 22:47

296

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Counting Game Question, 2 players

Published on 05 Apr 2026 - 19:12

157

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Conjecture that relates the set of primes to inequalities

Published on 23 Feb 2026 - 5:45

430

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Is it true that at least two of any consecutive $2m$ positive integers cannot be divided by odd prime numbers less than $2m$?

Published on 23 Feb 2026 - 5:45

173

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Prove prime $p$ divides $\binom{p^k}{n}$ for any $n$, $1 \le n \le p^k-1$, $k$ a positive integer

Published on 23 Feb 2026 - 5:45

114

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Proving a monotonic subsequence exists

Published on 23 Feb 2026 - 5:37

43

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Simplify $\frac{1}{n}\sum_{d\mid u} \varphi(d)\cdot 2^{\frac{nr}{d}}$

Published on 23 Feb 2026 - 5:43

216

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Nnm distinguishable balls with m different colors

Published on 23 Feb 2026 - 5:42

34

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Does every positive power of $7$ contain $2$ in their ternary representation?

Published on 09 Apr 2026 - 4:13

188

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Examples in number theory where a heuristic argument fails

Published on 23 Feb 2026 - 5:42

202

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Stationary distribution of a Markov chain on the nonnegative integers

Published on 23 Feb 2026 - 5:44

385

Views

odd even position of digits in a number

Published on 23 Feb 2026 - 5:43

List Question

A Variation on the Coin Problem

Sequences where each number is a divisor of one less than the next

Counting/bounding number of relatively prime pairs?

Counting the Number of Points in an Algebraic Variety

Counting Game Question, 2 players

Conjecture that relates the set of primes to inequalities

Is it true that at least two of any consecutive $2m$ positive integers cannot be divided by odd prime numbers less than $2m$?

Prove prime $p$ divides $\binom{p^k}{n}$ for any $n$, $1 \le n \le p^k-1$, $k$ a positive integer

Proving a monotonic subsequence exists

Simplify $\frac{1}{n}\sum_{d\mid u} \varphi(d)\cdot 2^{\frac{nr}{d}}$

Nnm distinguishable balls with m different colors

Does every positive power of $7$ contain $2$ in their ternary representation?

Examples in number theory where a heuristic argument fails

Stationary distribution of a Markov chain on the nonnegative integers

odd even position of digits in a number

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