therefore
Sign up
Open navigation

Source-pinned research

Research proof index

Search theorem names, mathematical ideas, modules, topics, projects, and role-labelled researchers. Open a result for its complete indexed Lean declaration and source record.

This index contains 1 research declarations. Search 10,000 more complete Mathlib declarations.

1 topic

1 result

Clear filters
Project-declaredLean 4.31.0

Typecheck policy at level with environments no dne

Cedar.Thm.typecheck_policy_at_level_with_environments_no_dne

Plain-language statement

The _no_dne analogue of typecheck_policy_at_level_with_environments_is_sound: a policy that level-checks against every environment of the schema (and so, in particular, the one the request inhabits), evaluated against a store closed at that level, never produces entityDoesNotExist.

authorizationprogram verificationsemantics

Source project: Cedar Specification

Person-level attribution pending.

View proof record