Homotopy Type Theory
wedge sum (Rev #2, changes)

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Idea

The wedge sum of two types AA and BB, can be defined as the pushout of the span

A1BA \leftarrow \mathbf{1} \rightarrow B

where the maps pick the base points of AA and BB. This pushout is denoted ABA \vee B and has basepoint ABinl( A)\star_{A \vee B} \equiv \mathrm{inl}(\star_A)

Definition

References

Revision on September 4, 2018 at 05:14:00 by Ali Caglayan. See the history of this page for a list of all contributions to it.