| Metamath Proof Explorer |
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Related theorems Unicode version |
| Description: A mapping is a relation. |
| Ref | Expression |
|---|---|
| frel |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ffn 4562 |
. 2
| |
| 2 | fnrel 4511 |
. 2
| |
| 3 | 1, 2 | syl 12 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: fssxp 4575 fssxpOLD 4576 fcoi2OLD 4587 foconst 4629 fsn 4807 mapsn 5404 metn0 9098 gapm 9462 hmeobc 10239 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 |
| This theorem depends on definitions: df-bi 164 df-an 242 df-fun 4008 df-fn 4009 df-f 4010 |