4 commits

Author	SHA1	Message	Date
Michael Sippel	12da3e97bd	change meaning of expr_ascend to only explicitly state the top segment of the type ladder. ... also add associativity of ladder types in type-equivalence	2024-09-16 15:58:29 +02:00
Michael Sippel	cae0572e1b	wip on preservation proof	2024-09-16 15:14:53 +02:00
Michael Sippel	bf7846294f	coq: move context into separate module, define morphism-path & redefine typing rules	2024-09-05 12:47:30 +02:00
Michael Sippel	b31c8abc6c	initial definition of soundness theorems	2024-09-04 12:41:17 +02:00