Purpose of Verification
- Given: input condition I and output condition O.
- Abstract definition of a function ("what is to be done").
- May be inconstructive (does not immediately yield an algorithm).
- Even if constructive, the corresponding algorithm
may be too inefficient.
- Given: definition of a function f.
- Concrete definition of a function ("how is it done").
- Intended to yield (efficient) algorithm.
- Verification: show that f implements corresponding
Definition of such a function and its verification needs more knowledge;
more knowledge gives better algorithms.
Author: Wolfgang Schreiner
Last Modification: November 24, 1999