Special Cases
The Kronecker delta notation is a specific case of Iverson notation when the condition is equality. That is,
The indicator function, another specific case, has set membership as its condition:
The sign function and Heaviside step function are also easily expressed in this notation:
And the trichotomy of the reals can be expressed:
Read more about this topic: Iverson Bracket
Famous quotes containing the words special and/or cases:
“I have a special grudge against those who have the same faults as I do.”
—Mason Cooley (b. 1927)
“For the most part, we are not where we are, but in a false position. Through an infirmity of our natures, we suppose a case, and put ourselves into it, and hence are in two cases at the same time, and it is doubly difficult to get out.”
—Henry David Thoreau (1817–1862)