Mathematics
- Identity element, a special element in a set or structure with respect to an operator
- Identity function, a function that does not alter its argument
- Identity (mathematics), an equality that holds regardless of the values of its variables
- Identity matrix, a square matrix with ones on the main diagonal, zeros elsewhere
Read more about this topic: Identity
Famous quotes containing the word mathematics:
“Why does man freeze to death trying to reach the North Pole? Why does man drive himself to suffer the steam and heat of the Amazon? Why does he stagger his mind with the mathematics of the sky? Once the question mark has arisen in the human brain the answer must be found, if it takes a hundred years. A thousand years.”
—Walter Reisch (1903–1963)