This site contains: mathematics courses and book; covers: image analysis, data analysis, and discrete modelling; provides: image analysis software. Created and run by Peter Saveliev.
Identity function
From Intelligent Perception
Given a set X, the function id: X → X given by f(x) = x is called the identity function.
A trivial function but there are issues to be discussed:
- What if X is a topological space?
- What if X is a group?
A slightly less trivial function is the inclusion.
