The FreeCommAlgebra on a coproduct of types #925
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… into freeCommAlgebra_comm_coproduct # Conflicts: # Cubical/Algebra/CommAlgebra/FreeCommAlgebra/OnCoproduct.agda
MatthiasHu
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MatthiasHu
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This PR is about proving the relation
where
IandJare types which function as index-types for the variables in the generalized polynomial-ringsR[I]andR[I][J]. This can be used to show thatwhich are the standard multivariate polynomials in n,m and n+m variables. This also works for sets merely equivalent to some
Fin k, so a version with actions of permutations can also be defined.The PR also adds base change for commutative algebras (from R-Algebras to S-Algebras along a hom f:S->R).