text/ncat.tex
changeset 879 cf26fcc97d85
parent 877 651d16126999
child 881 c3cc526965a9
equal deleted inserted replaced
878:937214896458 879:cf26fcc97d85
  2115 First we explain the remark about derived hom above.
  2115 First we explain the remark about derived hom above.
  2116 Let $L$ be a marked 1-ball and let $\cl{\cX}(L)$ denote the local homotopy colimit construction
  2116 Let $L$ be a marked 1-ball and let $\cl{\cX}(L)$ denote the local homotopy colimit construction
  2117 associated to $L$ by $\cX$ and $\cC$.
  2117 associated to $L$ by $\cX$ and $\cC$.
  2118 (See \S \ref{ss:ncat_fields} and \S \ref{moddecss}.)
  2118 (See \S \ref{ss:ncat_fields} and \S \ref{moddecss}.)
  2119 Define $\cl{\cY}(L)$ similarly.
  2119 Define $\cl{\cY}(L)$ similarly.
  2120 For $K$ an unmarked 1-ball let $\cl{\cC(K)}$ denote the local homotopy colimit
  2120 For $K$ an unmarked 1-ball let $\cl{\cC}(K)$ denote the local homotopy colimit
  2121 construction associated to $K$ by $\cC$.
  2121 construction associated to $K$ by $\cC$.
  2122 Then we have an injective gluing map
  2122 Then we have an injective gluing map
  2123 \[
  2123 \[
  2124 	\gl: \cl{\cX}(L) \ot \cl{\cC}(K) \to \cl{\cX}(L\cup K) 
  2124 	\gl: \cl{\cX}(L) \ot \cl{\cC}(K) \to \cl{\cX}(L\cup K) 
  2125 \]
  2125 \]
  2223 
  2223 
  2224 The $0$-marked balls can be cut into smaller balls in various ways.
  2224 The $0$-marked balls can be cut into smaller balls in various ways.
  2225 We only consider those decompositions in which the smaller balls are either
  2225 We only consider those decompositions in which the smaller balls are either
  2226 $0$-marked (i.e. intersect the $0$-marking of the large ball in a disc) 
  2226 $0$-marked (i.e. intersect the $0$-marking of the large ball in a disc) 
  2227 or plain (don't intersect the $0$-marking of the large ball).
  2227 or plain (don't intersect the $0$-marking of the large ball).
  2228 We can also take the boundary of a $0$-marked ball, which is $0$-marked sphere.
  2228 We can also take the boundary of a $0$-marked ball, which is a $0$-marked sphere.
  2229 
  2229 
  2230 Fix $n$-categories $\cA$ and $\cB$.
  2230 Fix $n$-categories $\cA$ and $\cB$.
  2231 These will label the two halves of a $0$-marked $k$-ball.
  2231 These will label the two halves of a $0$-marked $k$-ball.
  2232 
  2232 
  2233 An $n$-category $0$-sphere module $\cM$ over the $n$-categories $\cA$ and $\cB$ is 
  2233 An $n$-category $0$-sphere module $\cM$ over the $n$-categories $\cA$ and $\cB$ is 
  2616 \end{tikzpicture}
  2616 \end{tikzpicture}
  2617 \end{equation*}
  2617 \end{equation*}
  2618 \caption{Moving $B$ from bottom to top}
  2618 \caption{Moving $B$ from bottom to top}
  2619 \label{jun23c}
  2619 \label{jun23c}
  2620 \end{figure}
  2620 \end{figure}
  2621 Let $D' = B\cap C$.
       
  2622 It is not hard too show that the above two maps are mutually inverse.
  2621 It is not hard too show that the above two maps are mutually inverse.
  2623 
  2622 
  2624 \begin{lem} \label{equator-lemma}
  2623 \begin{lem} \label{equator-lemma}
  2625 Any two choices of $E$ and $E'$ are related by a series of modifications as above.
  2624 Any two choices of $E$ and $E'$ are related by a series of modifications as above.
  2626 \end{lem}
  2625 \end{lem}