Discrete mathematics
Relations and mappings
Counts of relations, functions, injections and bijections.
Discrete mathematics
Number of ordered pairs
|A×B| = mn→Discrete mathematicsBinary relation properties
Binary relation properties: calculated from the entered values→Discrete mathematicsMapping function check
Mapping function check: calculated from the entered values→Discrete mathematicsNumber of binary relations
R = 2^(n²)→Discrete mathematicsNumber of mappings A→B
F = mⁿ→Discrete mathematicsNumber of injections A→B
I = m!/(m−n)!→Discrete mathematicsNumber of bijections
B = n!→