Question

List some unsolved problems in the world.

Answer 1

Answer:

versus NP.

Hodge conjecture.

Riemann hypothesis.

Yang–Mills existence and mass gap.

Navier–Stokes existence and smoothness.

Birch and Swinnerton-Dyer conjecture.

Answer 2

Answer:

5 of the world's toughest unsolved maths problems

1. Separatrix Separation. A pendulum in motion can either swing from side to side or turn in a continuous circle. ...

2. Navier–Stokes. The Navier-Stokes equations, developed in 1822, are used to describe the motion of viscous fluid. ...

3. Exponents and dimensions. ...

4. Impossibility theorems. ...

5. Spin glass.

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