Value symbolize? not some
Cedar.Thm.value_symbolize?_not_some
Plain-language statement
The results of symbolize? is not Term.some.
Exact Lean statement
theorem value_symbolize?_not_some
{v : Value} {ty : CedarType} {t : Term} {t' : Term}
(hsome : v.symbolize? ty = .some t) :
t ≠ .some t'Formal artifact
Lean source
theorem value_symbolize?_not_some {v : Value} {ty : CedarType} {t : Term} {t' : Term} (hsome : v.symbolize? ty = .some t) : t ≠ .some t':= by intros ht_some simp only [ht_some] at hsome unfold Value.symbolize? at hsome split at hsome · rename_i p cases p simp only [Prim.symbolize] at hsome all_goals try simp at hsome try contradiction all_goals repeat simp [bind, Option.bind] at hsome split at hsome all_goals try simp at hsome try contradiction- Project
- Cedar Specification
- License
- Apache-2.0
- Commit
- 3f093947b8ae
- Source
- cedar-lean/Cedar/Thm/SymCC/Symbolizer.lean:182-203
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Related declarations
Find? ext
Cedar.Data.Map.find?_ext
Plain-language statement
Two well-formed maps are equal if they have the same find? for every key.
Source project: Cedar Specification
Person-level attribution pending.
Find? notmem keys
Cedar.Data.Map.find?_notmem_keys
Plain-language statement
Inverse of find?_mem_toList, except that this requires wf
Source project: Cedar Specification
Person-level attribution pending.
Find? some iff in values
Cedar.Data.Map.find?_some_iff_in_values
Plain-language statement
The mp direction of this does not need the wf precondition and, in fact, is available separately as find?_some_implies_in_values above
Source project: Cedar Specification
Person-level attribution pending.