Similar to 中国人郵便配達問題

Fair division

Optimization problem

Boolean satisfiability problem

Initial value problem

Constraint satisfaction problem

Duality (optimization)

Birthday problem

Halting problem

Dirichlet problem

Dubins–Spanier theorems

Napkin ring problem

Nim-sum

Topswops

Fagnano's problem

Fermi problem

Subset sum problem

Brocard's problem

Class number problem

0.999...

Zero to the power of zero

One-dimensional space

1 + 2 + 3 + 4 + ⋯

1 + 2 + 4 + 8 + ⋯

Root of unity

Ones' complement