symmetric monoidal (∞,1)-category of spectra
Given a cardinal number $n$, an n-ary operation on a set $S$ is a function
from the $n$th cartesian power $S^n$ of $S$ to $S$ itself, where [n] is a set with $n$ elements. The arity of the operation is $n$.
More generally, an n-ary operation in a multicategory is just a multimorphism.
Every set $S$ with an $n$-ary operation $\phi$ comes with an endomorphism called the $n$-th power operation
where $S \overset{diag_n}{\longrightarrow} S^n$ is the diagonal morphism.
Last revised on May 7, 2021 at 05:45:28. See the history of this page for a list of all contributions to it.