Constant maps of pointed types

Content created by Jonathan Prieto-Cubides, Fredrik Bakke and Egbert Rijke.

Created on 2023-02-09.
Last modified on 2023-05-03.

module structured-types.constant-maps-pointed-types where
Imports 
open import foundation.dependent-pair-types
open import foundation.identity-types
open import foundation.universe-levels

open import structured-types.pointed-maps
open import structured-types.pointed-types

Idea

Given a type X and a pointed type A, the constant map from X to A maps every element of X to the base point of A.

Definition

const-Pointed-Type :
  {l1 l2 : Level} (X : UU l1) (A : Pointed-Type l2) → X → type-Pointed-Type A
const-Pointed-Type X A x = point-Pointed-Type A

pointed-const-Pointed-Type :
  {l1 l2 : Level} (A : Pointed-Type l1) (B : Pointed-Type l2) → A →∗ B
pr1 (pointed-const-Pointed-Type A B) =
  const-Pointed-Type (type-Pointed-Type A) B
pr2 (pointed-const-Pointed-Type A B) = refl

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