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Mirrors > Home > ILE Home > Th. List > frel | Unicode version |
Description: A mapping is a relation. (Contributed by NM, 3-Aug-1994.) |
Ref | Expression |
---|---|
frel |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ffn 5280 |
. 2
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2 | fnrel 5229 |
. 2
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3 | 1, 2 | syl 14 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 |
This theorem depends on definitions: df-bi 116 df-fun 5133 df-fn 5134 df-f 5135 |
This theorem is referenced by: fssxp 5298 fsn 5600 eluzel2 9355 hmeocnv 12515 metn0 12586 |
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