text/ncat.tex
changeset 928 54503d88c969
parent 924 e2adf8fe894a
child 929 50af564d0e04
equal deleted inserted replaced
927:8d64a28b2334 928:54503d88c969
  1782 %\nn{need to finish explaining why we have a system of fields;
  1782 %\nn{need to finish explaining why we have a system of fields;
  1783 %define $k$-cat $\cC(\cdot\times W)$}
  1783 %define $k$-cat $\cC(\cdot\times W)$}
  1784 
  1784 
  1785 \subsection{Modules}
  1785 \subsection{Modules}
  1786 \label{sec:modules}
  1786 \label{sec:modules}
       
  1787 
       
  1788 \tikzset{marked/.style={line width=3pt,red}}
       
  1789 
  1787 Next we define ordinary and $A_\infty$ $n$-category modules.
  1790 Next we define ordinary and $A_\infty$ $n$-category modules.
  1788 The definition will be very similar to that of $n$-categories,
  1791 The definition will be very similar to that of $n$-categories,
  1789 but with $k$-balls replaced by {\it marked $k$-balls,} defined below.
  1792 but with $k$-balls replaced by {\it marked $k$-balls,} defined below.
  1790 
  1793 
  1791 Our motivating example comes from an $(m{-}n{+}1)$-dimensional manifold $W$ with boundary
  1794 Our motivating example comes from an $(m{-}n{+}1)$-dimensional manifold $W$ with boundary
  1864 \]
  1867 \]
  1865 which is natural with respect to the actions of homeomorphisms.}
  1868 which is natural with respect to the actions of homeomorphisms.}
  1866 \end{lem}
  1869 \end{lem}
  1867 Again, this is in exact analogy with Lemma \ref{lem:domain-and-range}, and illustrated in Figure \ref{fig:module-boundary}.
  1870 Again, this is in exact analogy with Lemma \ref{lem:domain-and-range}, and illustrated in Figure \ref{fig:module-boundary}.
  1868 \begin{figure}[t]
  1871 \begin{figure}[t]
  1869 \tikzset{marked/.style={line width=3pt}}
       
  1870 
       
  1871 \begin{equation*}
  1872 \begin{equation*}
  1872 \begin{tikzpicture}[baseline=0]
  1873 \begin{tikzpicture}[baseline=0]
  1873 \coordinate (a) at (0,1);
  1874 \coordinate (a) at (0,1);
  1874 \coordinate (b) at (4,1);
  1875 \coordinate (b) at (4,1);
  1875 \draw[marked] (a) arc (180:0:2);
  1876 \draw[marked] (a) arc (180:0:2);
  1876 \draw (b) -- (a);
  1877 \draw (b) -- (a);
  1877 \node at (2,2) {$M_1$};
  1878 \node at (2,2) {$M_1$};
  1878 
  1879 
  1879 \draw (0,0) node[fill, circle] {} -- (4,0) node[fill,circle] {};
  1880 \draw (0,0) node[fill, circle, red] {} -- (4,0) node[fill,circle,red] {};
  1880 \node at (-0.6,0) {$E$};
  1881 \node at (-0.6,0) {$E$};
  1881 
  1882 
  1882 \draw[marked] (0,-1) arc(-180:0:2);
  1883 \draw[marked] (0,-1) arc(-180:0:2);
  1883 \draw (4,-1) -- (0,-1);
  1884 \draw (4,-1) -- (0,-1);
  1884 \node at (2,-2) {$M_2$};
  1885 \node at (2,-2) {$M_2$};
  1885 \end{tikzpicture}
  1886 \end{tikzpicture}
  1886 \qquad \qquad \qquad
  1887 \qquad \qquad \qquad
  1887 \begin{tikzpicture}[baseline=0]
  1888 \begin{tikzpicture}[baseline=0]
  1888 \draw[marked] (0,0) node {$H$} circle (2);
  1889 \draw[marked] (0,0) node[black] {$H$} circle (2);
  1889 \end{tikzpicture}
  1890 \end{tikzpicture}
  1890 \end{equation*}\caption{The marked hemispheres and marked balls from Lemma \ref{lem:module-boundary}.}
  1891 \end{equation*}\caption{The marked hemispheres and marked balls from Lemma \ref{lem:module-boundary}.}
  1891 \label{fig:module-boundary}
  1892 \label{fig:module-boundary}
  1892 \end{figure}
  1893 \end{figure}
  1893 
  1894 
  2023 \begin{figure}[ht]
  2024 \begin{figure}[ht]
  2024 \begin{equation*}
  2025 \begin{equation*}
  2025 \begin{tikzpicture}
  2026 \begin{tikzpicture}
  2026 \draw (0,2) -- (2,2.5);
  2027 \draw (0,2) -- (2,2.5);
  2027 \draw (0,2) -- (2,1.5);
  2028 \draw (0,2) -- (2,1.5);
  2028 \draw[line width=2pt] (2,1.5) -- (2,2.5);
  2029 \draw[marked] (2,1.5) -- (2,2.5);
  2029 \draw (0,0) -- (2,0) node[circle,fill,inner sep=2pt] {};
  2030 \draw (0,0) -- (2,0) node[red,circle,fill,inner sep=2pt] {};
  2030 \draw[->] (1,1.5) -- (1,0.25);
  2031 \draw[->] (1,1.5) -- (1,0.25);
       
  2032 % fibres
       
  2033 \path[clip] (0,2) -- (2,2.5) -- (2,1.5) -- cycle;
       
  2034 \foreach \x in {0, 0.25, ..., 1.75} {
       
  2035 	\draw[green!50!brown] (\x,1) -- (\x,3);
       
  2036 }
  2031 \end{tikzpicture}
  2037 \end{tikzpicture}
  2032 \qquad \qquad \qquad
  2038 \qquad \qquad \qquad
  2033 \begin{tikzpicture}
  2039 \begin{tikzpicture}
  2034 \draw (2,2.5) -- (0,2.5) -- (0,1.5) -- (2,1.5);
  2040 \draw (2,2.5) -- (0,2.5) -- (0,1.5) -- (2,1.5);
  2035 \draw[line width=2pt] (2,1.5) -- (2,2.5);
  2041 \draw[marked] (2,1.5) -- (2,2.5);
  2036 \draw (0,0) -- (2,0) node[circle,fill,inner sep=2pt] {};
  2042 \draw (0,0) -- (2,0) node[red,circle,fill,inner sep=2pt] {};
  2037 \draw[->] (1,1.2) -- (1,0.25);
  2043 \draw[->] (1,1.2) -- (1,0.25);
       
  2044 % fibres
       
  2045 \path[clip] (2,2.5) -- (0,2.5) -- (0,1.5) -- (2,1.5);
       
  2046 \foreach \x in {0, 0.25, ..., 1.75} {
       
  2047 	\draw[green!50!brown] (\x,1) -- (\x,3);
       
  2048 }
  2038 \end{tikzpicture}
  2049 \end{tikzpicture}
  2039 \end{equation*}
  2050 \end{equation*}
  2040 \caption{Two examples of marked pinched products.}
  2051 \caption{Two examples of marked pinched products.}
  2041 \label{fig:marked-pinched-products}
  2052 \label{fig:marked-pinched-products}
  2042 \end{figure}
  2053 \end{figure}
  2047 \begin{figure}[ht]
  2058 \begin{figure}[ht]
  2048 \begin{equation*}
  2059 \begin{equation*}
  2049 \begin{tikzpicture}
  2060 \begin{tikzpicture}
  2050 \draw (0,2) -- (2,2.5);
  2061 \draw (0,2) -- (2,2.5);
  2051 \draw (0,2) -- (2,1.5);
  2062 \draw (0,2) -- (2,1.5);
  2052 \draw[dashed] (1.333,2.333) -- (1.333,1.666);
  2063 \draw[marked] (2,1.5) -- (2,2.5);
  2053 \draw[line width=2pt] (2,1.5) -- (2,2.5);
  2064 \draw (0,0) -- (2,0) node[red,circle,fill,inner sep=2pt] {};
  2054 \draw (0,0) -- (2,0) node[circle,fill,inner sep=2pt] {};
       
  2055 \draw[->] (1,1.5) -- (1,0.25);
  2065 \draw[->] (1,1.5) -- (1,0.25);
       
  2066 % fibres
       
  2067 \path[clip] (0,2) -- (2,2.5) -- (2,1.5) -- cycle;
       
  2068 \draw[dashed] (1.4,2.5) -- (1.4,1.5);
       
  2069 \foreach \x in {0, 0.25, ..., 1.75} {
       
  2070 	\draw[green!50!brown] (\x,1) -- (\x,3);
       
  2071 }
  2056 \end{tikzpicture}
  2072 \end{tikzpicture}
  2057 \qquad \qquad \qquad
  2073 \qquad \qquad \qquad
  2058 \begin{tikzpicture}
  2074 \begin{tikzpicture}
  2059 \draw (0,2) -- (2,2.5);
  2075 \draw (0,2) -- (2,2.5);
  2060 \draw (0,2) -- (2,1.5);
  2076 \draw (0,2) -- (2,1.5);
  2061 \draw[dashed] (0.666,2.166) -- (2,1.833);
  2077 \draw[dashed] (0.666,2.166) -- (2,1.833);
  2062 \draw[line width=2pt] (2,1.5) -- (2,2.5);
  2078 \draw[marked] (2,1.5) -- (2,2.5);
  2063 \draw (0,0) -- (2,0) node[circle,fill,inner sep=2pt] {};
  2079 \draw (0,0) -- (2,0) node[red,circle,fill,inner sep=2pt] {};
  2064 \draw[->] (1,1.5) -- (1,0.25);
  2080 \draw[->] (1,1.5) -- (1,0.25);
       
  2081 % fibres
       
  2082 \path[clip] (0,2) -- (2,2.5) -- (2,1.5) -- cycle;
       
  2083 \foreach \x in {0, 0.25, ..., 1.75} {
       
  2084 	\draw[green!50!brown] (\x,1) -- (\x,3);
       
  2085 }
  2065 \end{tikzpicture}
  2086 \end{tikzpicture}
  2066 \end{equation*}
  2087 \end{equation*}
  2067 \caption{Two examples of decompositions of marked pinched products.}
  2088 \caption{Two examples of decompositions of marked pinched products.}
  2068 \label{fig:decomposing-marked-pinched-products}
  2089 \label{fig:decomposing-marked-pinched-products}
  2069 \end{figure}
  2090 \end{figure}