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Related theorems Unicode version |
| Description: A mapping is a relation. |
| Ref | Expression |
|---|---|
| frel |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ffn 3627 |
. 2
| |
| 2 | fnrel 3586 |
. 2
| |
| 3 | 1, 2 | syl 10 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: fssxp 3637 fcoi2 3646 foconst 3683 fsn 3834 mapsn 4345 metne0 7821 hmeobc 10542 |
| 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 147 df-an 225 df-fun 3192 df-fn 3193 df-f 3194 |