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Description: A function with domain is a relation. (Contributed by NM, 1-Aug-1994)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | fnrel | ⊢ ( 𝐹 Fn 𝐴 → Rel 𝐹 ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fnfun | ⊢ ( 𝐹 Fn 𝐴 → Fun 𝐹 ) | |
| 2 | funrel | ⊢ ( Fun 𝐹 → Rel 𝐹 ) | |
| 3 | 1 2 | syl | ⊢ ( 𝐹 Fn 𝐴 → Rel 𝐹 ) |