Description: The transitive closure of a class is a relation. (Contributed by Scott Fenton, 17-Oct-2024)
Ref | Expression | ||
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Assertion | relttrcl | Could not format assertion : No typesetting found for |- Rel t++ R with typecode |- |
Step | Hyp | Ref | Expression |
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1 | df-ttrcl | Could not format t++ R = { <. x , y >. | E. n e. ( _om \ 1o ) E. f ( f Fn suc n /\ ( ( f ` (/) ) = x /\ ( f ` n ) = y ) /\ A. m e. n ( f ` m ) R ( f ` suc m ) ) } : No typesetting found for |- t++ R = { <. x , y >. | E. n e. ( _om \ 1o ) E. f ( f Fn suc n /\ ( ( f ` (/) ) = x /\ ( f ` n ) = y ) /\ A. m e. n ( f ` m ) R ( f ` suc m ) ) } with typecode |- | |
2 | 1 | relopabi | Could not format Rel t++ R : No typesetting found for |- Rel t++ R with typecode |- |