The kernel of a linear transformation T is the set of all vectors v such that T sends v to this value.
The kernel of a linear transformation T is the set of all vectors v such that T sends v to this value. This many odd perfect numbers have currently been discovered, and it is the value of the determinant of a singular matrix. This is the probability of two mutually exclusive events occurring. This number is its own (*) additive inverse, but it has no multiplicative inverse, because it is impossible to divide by this number. This number is contained in the set of whole numbers but not in the set of natural numbers. For ten points, what is this neither positive nor negative number which is equal to four minus four?
The kernel of a linear transformation T is the set of all vectors v such that T sends v to this value.
{zero} (or {additive identity} before mention)