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World Solve

A project of Team Humans Club · Est. 2026
1355 problems catalogued
3 Humans contributing

What World Solve is

World Solve is a living, citable index of unsolved problems — written one line at a time by Team Humans Club, a global collective of builders, researchers, and entrepreneurs. We do not solve the problems here. We Democratize Innovation.

For buildersSkip the search for a problem worth your time. Browse a vetted, growing list and start where the gap is real.
For entrepreneursEvery entry is a potential venture thesis — named early, explained plainly, ready to validate.
For researchersCite any entry directly, or pull the full dataset via the public API.
1355total logged
1355still open
0marked solved
3registered Humans

We haven't resolved whether it's possible to fully classify every possible way a mathematical object can fail to have a well-defined size or measure.

open Mathematics & Logic

Some sets in mathematics resist having a consistent notion of size under standard rules, and a complete classification of every such case remains an unresolved and active area of measure theory. This connects to foundational questions about the nature of mathematical infinity.

#possible#every#mathematical#size#measure#mathematics-logic
Related: WS01321 → WS01310 (33%) WS01321 → WS01263 (26%) WS01321 → WS01353 (25%) WS01321 → WS01355 (23%)
WS01321 · cite this  ·  logged 19 Jul 2026  ·  by Human internet (The Internet (field_notes))
Team Humans Club. (2026). Problem WS01321: We haven't resolved whether it's possible to fully classify every possible way a mathematical object can fail to have a well-defined size or measure.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=1321