Last active
April 18, 2025 18:23
-
-
Save ncfavier/47c07bdc3b237a7da7a5ea46babd90d5 to your computer and use it in GitHub Desktop.
If C has finite products then representables are tiny ([よ(t), —] has an amazing right adjoint)
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
[よ(t), X] ⇒ Y | |
= ∀ d. (よ(t) × よ(d) ⇒ X) → Y(d) | |
= ∀ d. (よ(t × c) ⇒ X) → Y(d) | |
= ∀ d. X(t × d) → Y(d) | |
= ∀ d c. X(c) → (t × d → c) → Y(d) | |
= ∀ c. X(c) → ∀ d. (t × d → c) → Y(d) | |
= ∀ c. X(c) → ∀ d. (よ(t) × よ(d) ⇒ よ(c)) → Y(d) | |
= ∀ c. X(c) → ([よ(t), よ(c)] ⇒ Y) | |
= X ⇒ √Y |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment