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Mirrors > Home > ILE Home > Th. List > frel | GIF version |
Description: A mapping is a relation. (Contributed by NM, 3-Aug-1994.) |
Ref | Expression |
---|---|
frel | ⊢ (𝐹:𝐴⟶𝐵 → Rel 𝐹) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ffn 5272 | . 2 ⊢ (𝐹:𝐴⟶𝐵 → 𝐹 Fn 𝐴) | |
2 | fnrel 5221 | . 2 ⊢ (𝐹 Fn 𝐴 → Rel 𝐹) | |
3 | 1, 2 | syl 14 | 1 ⊢ (𝐹:𝐴⟶𝐵 → Rel 𝐹) |
Colors of variables: wff set class |
Syntax hints: → wi 4 Rel wrel 4544 Fn wfn 5118 ⟶wf 5119 |
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 5125 df-fn 5126 df-f 5127 |
This theorem is referenced by: fssxp 5290 fsn 5592 eluzel2 9331 hmeocnv 12476 metn0 12547 |
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