Description: A binary (endo)function on a set X . (Contributed by AV, 20-May-2024)
Ref | Expression | ||
---|---|---|---|
Assertion | 2aryfvalel | Could not format assertion : No typesetting found for |- ( X e. V -> ( F e. ( 2 -aryF X ) <-> F : ( X ^m { 0 , 1 } ) --> X ) ) with typecode |- |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2nn0 | ||
2 | fzo0to2pr | ||
3 | 2 | eqcomi | |
4 | 3 | naryfvalel | Could not format ( ( 2 e. NN0 /\ X e. V ) -> ( F e. ( 2 -aryF X ) <-> F : ( X ^m { 0 , 1 } ) --> X ) ) : No typesetting found for |- ( ( 2 e. NN0 /\ X e. V ) -> ( F e. ( 2 -aryF X ) <-> F : ( X ^m { 0 , 1 } ) --> X ) ) with typecode |- |
5 | 1 4 | mpan | Could not format ( X e. V -> ( F e. ( 2 -aryF X ) <-> F : ( X ^m { 0 , 1 } ) --> X ) ) : No typesetting found for |- ( X e. V -> ( F e. ( 2 -aryF X ) <-> F : ( X ^m { 0 , 1 } ) --> X ) ) with typecode |- |