Hairy Ball Theorem
There does not exist an everywhere Nonzero tangent Vector Field on the 2-Sphere 
. This impliesthat somewhere on the surface of the Earth, 
there is a point with zero horizontal wind velocity. The theoremcan be generalized to the statement that the 
-sphere 
has a nonzero tangent vector field Iff is Odd.
- Midy's Theorem
- Mikusinski's Problem
- Milin Conjecture
- Mill
- Miller-Askinuze Solid
- Miller Cylindrical Projection
- Miller's Algorithm
- Miller's Primality Test
- Miller's Solid
- Milliard
- Millin Series
- Million
- Mills' Constant
- Milne's Method
- Milnor's Conjecture
- Milnor's Theorem
- Minimal Cover
- Minimal Discriminant
- Minimal Matrix
- Minimal Residue
- Minimal Set
- Minimal Surface
- Minimax Approximation
- Minimax Polynomial
- Minimax Theorem