apply Schema.lookupTypeFromCHeadersUnique
η : Type u_η
dec_η : DecidableEq η
sch : Schema
t : Table sch
cs : List (CertifiedHeader sch)
c : CertifiedName (Schema.fromCHeaders cs)
⊢ Schema.lookupType sch { fst := c.fst, snd := Schema.hasNameOfFromCHeaders c.snd } =
    Schema.lookupType (Schema.map Sigma.fst cs) c
no goals