Precedence Relation and Corresponding Quasi-Ordinal Knowledge Space
This app illustrates the one-to-one correspondence between a precedence
relation among a number of problems and a quasi-ordinal knowledge space.
After a short introduction, users can define their own precedence relation
for five problems. The app automatically draws the graph of both the
relation and the corresponding knowledge space. In a short quiz, users can
test their knowledge about precedence relations.