Positive Semidefinite Matrix
A Matrix 
is positive semidefinite if
for all
.See also Positive Definite Matrix- Maurer Rose
- Maximal Ideal
- Maximally Linearly Independent
- Maximal Sum-Free Set
- Maximal Zero-Sum-Free Set
- Maximum
- Maximum Absolute Column Sum Norm
- Maximum Absolute Row Sum Norm
- Maximum Clique Problem
- Maximum Entropy Method
- Maximum Likelihood
- Max Sequence
- Maxwell Distribution
- May's Theorem
- May-Thomason Uniqueness Theorem
- Maze
- Mazur's Theorem
- McCay Circle
- McCoy's Theorem
- McLaughlin Group
- McMohan's Theorem
- McNugget Number
- Mean
- Mean Cluster Count Per Site
- Mean Cluster Density