Ivan Shishkin, Pine Forest

Weekly Problem Design Contest

Contest open

An infinity of objects

Starts Saturday, October 10, 2026 Deadline Friday, October 16, 2026 · Paris time Prize 100 reputation points

Create a math problem based on the theme “An Infinity of Objects”.

Your problem must involve infinitely many objects, whether real or mathematical: points, circles, cubes, numbers, polynomials, paths, matrices... Feel free to interpret the theme creatively!

How entries are judged

  • Adherence to the weekly theme
  • Originality: your problem must be created specifically for this contest.
  • Mathematical interest
  • Clarity
  • Presentation

Rules

One entry per person. You may edit your problem until Friday at 23:00, Paris time. Admins select one winner and may also award honorable mentions. Translations of the same problem count as one entry.

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Entries

3
44R n’est pas deˊnombrable.\mathbb{R} \text{ n'est pas dénombrable.}FRbeignet6260Le compte est bonFRmathman70Ô π\pi, conte-moi la nature de la série...FRNawzadHogan

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