Boundary Point
A point which is a member of the Closure of a given set 
and the Closure of its complement set. If 
isa subset of 
, then a point 
is a boundary point of if every Neighborhood of 
contains at least one point in and at least one point not in .
- Minor
- Minor Axis
- Minor Graph
- Minus
- Minus or Plus
- Minus Sign
- Minute
- Miquel Circles
- Miquel Equation
- Miquel Point
- Miquel's Theorem
- Miquel Triangle
- Mira Fractal
- Mirimanoff's Congruence
- Mirror Image
- Mirror Plane
- Misère Form
- Mitchell Index
- Miter Surface
- Mittag-Leffler Function
- Mittenpunkt
- Mixed Partial Derivative
- Mixed Strategy
- Mixed Tensor
- Mnemonic