Maturation is to pack oneself into a class, so that others do not need to know how exactly you handle their function calls.

To love someone is to let her keep a piece of my soul, a Horcrux.

To departure is to call back that broken soul.

Monoid

monoid=magma+associativity+identity

Magma

A magma is a set M matched with an operation • that sends any two elements a, b ∈ M to another element, a • b ∈ M, i.e. \((M,\cdot)\) is a magma, if

Determinant of …