text/ncat.tex
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parent 774 b88c4c4af945
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   835 to be the dual Hilbert space $A(X\times F; c)$.
   835 to be the dual Hilbert space $A(X\times F; c)$.
   836 (See \S\ref{sec:constructing-a-tqft}.)
   836 (See \S\ref{sec:constructing-a-tqft}.)
   837 \end{example}
   837 \end{example}
   838 
   838 
   839 
   839 
   840 \begin{example}[te bordism $n$-category of $d$-manifolds, ordinary version]
   840 \begin{example}[The bordism $n$-category of $d$-manifolds, ordinary version]
   841 \label{ex:bord-cat}
   841 \label{ex:bord-cat}
   842 \rm
   842 \rm
   843 \label{ex:bordism-category}
   843 \label{ex:bordism-category}
   844 For a $k$-ball $X$, $k<n$, define $\Bord^{n,d}(X)$ to be the set of all $(d{-}n{+}k)$-dimensional PL
   844 For a $k$-ball $X$, $k<n$, define $\Bord^{n,d}(X)$ to be the set of all $(d{-}n{+}k)$-dimensional PL
   845 submanifolds $W$ of $X\times \Real^\infty$ such that $\bd W = W \cap \bd X \times \Real^\infty$.
   845 submanifolds $W$ of $X\times \Real^\infty$ such that $\bd W = W \cap \bd X \times \Real^\infty$.
   910 is not the $A_\infty$ $n$-category $\pi^\infty_{\leq n}(T)$.
   910 is not the $A_\infty$ $n$-category $\pi^\infty_{\leq n}(T)$.
   911 It's easy to see that with $n=0$, the corresponding system of fields is just 
   911 It's easy to see that with $n=0$, the corresponding system of fields is just 
   912 linear combinations of connected components of $T$, and the local relations are trivial.
   912 linear combinations of connected components of $T$, and the local relations are trivial.
   913 There's no way for the blob complex to magically recover all the data of $\pi^\infty_{\leq 0}(T) \iso C_* T$.
   913 There's no way for the blob complex to magically recover all the data of $\pi^\infty_{\leq 0}(T) \iso C_* T$.
   914 
   914 
   915 \begin{example}[te bordism $n$-category of $d$-manifolds, $A_\infty$ version]
   915 \begin{example}[The bordism $n$-category of $d$-manifolds, $A_\infty$ version]
   916 \rm
   916 \rm
   917 \label{ex:bordism-category-ainf}
   917 \label{ex:bordism-category-ainf}
   918 As in Example \ref{ex:bord-cat}, for $X$ a $k$-ball, $k<n$, we define $\Bord^{n,d}_\infty(X)$
   918 As in Example \ref{ex:bord-cat}, for $X$ a $k$-ball, $k<n$, we define $\Bord^{n,d}_\infty(X)$
   919 to be the set of all $(d{-}n{+}k)$-dimensional
   919 to be the set of all $(d{-}n{+}k)$-dimensional
   920 submanifolds $W$ of $X\times \Real^\infty$ such that $\bd W = W \cap \bd X \times \Real^\infty$.
   920 submanifolds $W$ of $X\times \Real^\infty$ such that $\bd W = W \cap \bd X \times \Real^\infty$.