The Minimum Reactionary Distance From An Unarmed Attack Is

What is the difference between minimum and infimum? I have a great confusion about this.

the minimum reactionary distance from an unarmed attack is 1

I'm searching for some symbol representing minimum that is commonly used in math equations.

What is the difference between the minimum value and the lower bound of a function? To me, it seems that they are the same.

In short, I want to know the minimum numbers of triangles for triangulations of well-known sufaces (torus, projective plane, and Klein bottle), or the way to calculate them.

the minimum reactionary distance from an unarmed attack is 4

How can I find maximum and minimum modulus of a complex number?

Minimum and Maximum are very volatile, it is impossible to give a value. And f you try to estimate a value, number of elements in the population is an important parameter.

How do I estimate the minimum and the maximum values of normally ...

the minimum reactionary distance from an unarmed attack is 7

There's a few nice ways to do this but I focus on the technique of (1) make the minimum eigenvalue 0, i.e. all associated eigenvectors for the minimum eigenvalue $\in \ker A$.