Metamath Proof Explorer
Description: A terminal category is a thin category (deduction form). (Contributed by Zhi Wang, 16-Oct-2025)
|
|
Ref |
Expression |
|
Hypothesis |
termcthind.c |
⊢ ( 𝜑 → 𝐶 ∈ TermCat ) |
|
Assertion |
termcthind |
⊢ ( 𝜑 → 𝐶 ∈ ThinCat ) |
Proof
| Step |
Hyp |
Ref |
Expression |
| 1 |
|
termcthind.c |
⊢ ( 𝜑 → 𝐶 ∈ TermCat ) |
| 2 |
|
termcthin |
⊢ ( 𝐶 ∈ TermCat → 𝐶 ∈ ThinCat ) |
| 3 |
1 2
|
syl |
⊢ ( 𝜑 → 𝐶 ∈ ThinCat ) |