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| Mirrors > Home > ILE Home > Th. List > ffvelcdmda | Unicode version | ||
| Description: A function's value belongs to its codomain. (Contributed by Mario Carneiro, 29-Dec-2016.) |
| Ref | Expression |
|---|---|
| ffvelcdmd.1 |
|
| Ref | Expression |
|---|---|
| ffvelcdmda |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ffvelcdmd.1 |
. 2
| |
| 2 | ffvelcdm 5695 |
. 2
| |
| 3 | 1, 2 | sylan 283 |
1
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