text/ncat.tex
changeset 130 7b4f5e36d9de
parent 128 0387384c9acd
child 134 395bd663e20d
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   785 of marked 1-balls, call them left-marked and right-marked,
   785 of marked 1-balls, call them left-marked and right-marked,
   786 and hence there are two types of modules, call them right modules and left modules.
   786 and hence there are two types of modules, call them right modules and left modules.
   787 In all other cases ($k>1$ or unoriented or $\text{Pin}_\pm$),
   787 In all other cases ($k>1$ or unoriented or $\text{Pin}_\pm$),
   788 there is no left/right module distinction.
   788 there is no left/right module distinction.
   789 
   789 
       
   790 \medskip
       
   791 
       
   792 Examples of modules:
       
   793 \begin{itemize}
       
   794 \item
       
   795 \end{itemize}
   790 
   796 
   791 \subsection{Modules as boundary labels}
   797 \subsection{Modules as boundary labels}
   792 \label{moddecss}
   798 \label{moddecss}
   793 
   799 
   794 Let $\cC$ be an [$A_\infty$] $n$-category, let $W$ be a $k$-manifold ($k\le n$),
   800 Let $\cC$ be an [$A_\infty$] $n$-category, let $W$ be a $k$-manifold ($k\le n$),
   892 vs traditional defs, $n = 1,2$, $A_\infty$ or not, cats, modules, tensor products
   898 vs traditional defs, $n = 1,2$, $A_\infty$ or not, cats, modules, tensor products
   893 \item traditional $A_\infty$ 1-cat def implies our def
   899 \item traditional $A_\infty$ 1-cat def implies our def
   894 \item ... and vice-versa (already done in appendix)
   900 \item ... and vice-versa (already done in appendix)
   895 \item say something about unoriented vs oriented vs spin vs pin for $n=1$ (and $n=2$?)
   901 \item say something about unoriented vs oriented vs spin vs pin for $n=1$ (and $n=2$?)
   896 \item spell out what difference (if any) Top vs PL vs Smooth makes
   902 \item spell out what difference (if any) Top vs PL vs Smooth makes
   897 \item explain relation between old-fashioned blob homology and new-fangled blob homology
       
   898 (follows as special case of product formula (product with a point)).
       
   899 \item define $n{+}1$-cat of $n$-cats (a.k.a.\ $n{+}1$-category of generalized bimodules
   903 \item define $n{+}1$-cat of $n$-cats (a.k.a.\ $n{+}1$-category of generalized bimodules
   900 a.k.a.\ $n{+}1$-category of sphere modules); discuss Morita equivalence
   904 a.k.a.\ $n{+}1$-category of sphere modules); discuss Morita equivalence
       
   905 \item morphisms of modules; show that it's adjoint to tensor product
   901 \end{itemize}
   906 \end{itemize}
   902 
   907 
   903 
   908