Ryan Brewer RyanBrewer317
EduardoRFS
/ bool_by_j.v
Last active
October 24, 2025 02:25
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| Definition sig_fst {A B} {p q : {x : A | B x}} (H : p = q) | |
| : proj1_sig p = proj1_sig q := | |
| eq_rect _ (fun z => proj1_sig p = proj1_sig z) eq_refl _ H. | |
| Definition sig_snd {A B} {p q : {x : A | B x}} (H : p = q) | |
| : eq_rect _ B (proj2_sig p) _ (sig_fst H) = proj2_sig q := | |
| match H with | |
| | eq_refl => eq_refl | |
| end. |