diff -r 24f14faacab4 -r 4d66ffe8dc85 text/ncat.tex --- a/text/ncat.tex Wed Jun 15 14:15:19 2011 -0600 +++ b/text/ncat.tex Thu Jun 16 08:51:40 2011 -0600 @@ -676,8 +676,8 @@ Note that this auxiliary structure is only in dimension $n$; if $\dim(Y) < n$ then $\cC(Y; c)$ is just a plain set. -We will aim for a little bit more generality than we need and not assume that the objects -of our auxiliary category are sets with extra structure. +%We will aim for a little bit more generality than we need and not assume that the objects +%of our auxiliary category are sets with extra structure. First we must specify requirements for the auxiliary category. It should have a {\it distributive monoidal structure} in the sense of \nn{Stolz and Teichner, Traces in monoidal categories, 1010.4527}. @@ -688,6 +688,9 @@ \item vector spaces (or $R$-modules or chain complexes) with tensor product and direct sum; and \item topological spaces with product and disjoint union. \end{itemize} +For convenience, we will also assume that the objects of our auxiliary category are sets with extra structure. +(Otherwise, stating the axioms for identity morphisms becomes more cumbersome.) + Before stating the revised axioms for an $n$-category enriched in a distributive monoidal category, we need a preliminary definition. Once we have the above $n$-category axioms for $n{-}1$-morphisms, we can define the @@ -712,7 +715,7 @@ \] where the sum is over $c\in\cC(Y)$ such that $\bd c = d$. This map is natural with respect to the action of homeomorphisms and with respect to restrictions. -\item Product morphisms. \nn{Hmm... not sure what to say here. maybe we need sets with structure after all.} +%\item Product morphisms. \nn{Hmm... not sure what to say here. maybe we need sets with structure after all.} \end{itemize} \end{axiom}