agda-spa/Analysis/Utils.agda

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module Analysis.Utils where
open import Data.Product using (_,_)
open import Lattice
module _ {o} {O : Set o} {_≼ᴼ_ : O O Set o}
(≼ᴼ-trans : {o₁ o₂ o₃} o₁ ≼ᴼ o₂ o₂ ≼ᴼ o₃ o₁ ≼ᴼ o₃)
(combine : O O O) (combine-Mono₂ : Monotonic₂ _≼ᴼ_ _≼ᴼ_ _≼ᴼ_ combine) where
eval-combine₂ : {o₁ o₂ o₃ o₄ : O} o₁ ≼ᴼ o₃ o₂ ≼ᴼ o₄
combine o₁ o₂ ≼ᴼ combine o₃ o₄
eval-combine₂ {o₁} {o₂} {o₃} {o₄} o₁≼o₃ o₂≼o₄ =
let (combine-Monoˡ , combine-Monoʳ) = combine-Mono₂
in ≼ᴼ-trans (combine-Monoˡ o₂ o₁≼o₃)
(combine-Monoʳ o₃ o₂≼o₄)