diff -r d363611b1f59 -r 5ab0e6f0d89e blob1.tex --- a/blob1.tex Fri Jun 05 00:38:41 2009 +0000 +++ b/blob1.tex Fri Jun 05 16:10:37 2009 +0000 @@ -876,122 +876,16 @@ \label{sec:hochschild} \input{text/hochschild} + + + \section{Action of $\CD{X}$} \label{sec:evaluation} - -Let $CD_*(X, Y)$ denote $C_*(\Diff(X \to Y))$, the singular chain complex of -the space of diffeomorphisms -\nn{or homeomorphisms} -between the $n$-manifolds $X$ and $Y$ (extending a fixed diffeomorphism $\bd X \to \bd Y$). -For convenience, we will permit the singular cells generating $CD_*(X, Y)$ to be more general -than simplices --- they can be based on any linear polyhedron. -\nn{be more restrictive here? does more need to be said?} -We also will use the abbreviated notation $CD_*(X) \deq CD_*(X, X)$. - -\begin{prop} \label{CDprop} -For each $n$-manifold $X$ there is a chain map -\eq{ - e_X : CD_*(X, Y) \otimes \bc_*(X) \to \bc_*(Y) . -} -On $CD_0(X, Y) \otimes \bc_*(X)$ it agrees with the obvious action of $\Diff(X, Y)$ on $\bc_*(X)$ -(Proposition (\ref{diff0prop})). -For any splittings $X = X_1 \cup X_2$ and $Y = Y_1 \cup Y_2$, -the following diagram commutes up to homotopy -\eq{ \xymatrix{ - CD_*(X, Y) \otimes \bc_*(X) \ar[r]^{e_X} & \bc_*(Y) \\ - CD_*(X_1, Y_1) \otimes CD_*(X_2, Y_2) \otimes \bc_*(X_1) \otimes \bc_*(X_2) - \ar@/_4ex/[r]_{e_{X_1} \otimes e_{X_2}} \ar[u]^{\gl \otimes \gl} & - \bc_*(Y_1) \otimes \bc_*(Y_2) \ar[u]_{\gl} -} } -Any other map satisfying the above two properties is homotopic to $e_X$. -\end{prop} - -\nn{need to rewrite for self-gluing instead of gluing two pieces together} - -\nn{Should say something stronger about uniqueness. -Something like: there is -a contractible subcomplex of the complex of chain maps -$CD_*(X) \otimes \bc_*(X) \to \bc_*(X)$ (0-cells are the maps, 1-cells are homotopies, etc.), -and all choices in the construction lie in the 0-cells of this -contractible subcomplex. -Or maybe better to say any two choices are homotopic, and -any two homotopies and second order homotopic, and so on.} - -\nn{Also need to say something about associativity. -Put it in the above prop or make it a separate prop? -I lean toward the latter.} -\medskip - -The proof will occupy the remainder of this section. -\nn{unless we put associativity prop at end} - -Without loss of generality, we will assume $X = Y$. - -\medskip - -Let $f: P \times X \to X$ be a family of diffeomorphisms and $S \sub X$. -We say that {\it $f$ is supported on $S$} if $f(p, x) = f(q, x)$ for all -$x \notin S$ and $p, q \in P$. Equivalently, $f$ is supported on $S$ if there is a family of diffeomorphisms $f' : P \times S \to S$ and a `background' -diffeomorphism $f_0 : X \to X$ so that -\begin{align} - f(p,s) & = f_0(f'(p,s)) \;\;\;\; \mbox{for}\; (p, s) \in P\times S \\ -\intertext{and} - f(p,x) & = f_0(x) \;\;\;\; \mbox{for}\; (p, x) \in {P \times (X \setmin S)}. -\end{align} -Note that if $f$ is supported on $S$ then it is also supported on any $R \sup S$. - -Let $\cU = \{U_\alpha\}$ be an open cover of $X$. -A $k$-parameter family of diffeomorphisms $f: P \times X \to X$ is -{\it adapted to $\cU$} if there is a factorization -\eq{ - P = P_1 \times \cdots \times P_m -} -(for some $m \le k$) -and families of diffeomorphisms -\eq{ - f_i : P_i \times X \to X -} -such that -\begin{itemize} -\item each $f_i$ is supported on some connected $V_i \sub X$; -\item the sets $V_i$ are mutually disjoint; -\item each $V_i$ is the union of at most $k_i$ of the $U_\alpha$'s, -where $k_i = \dim(P_i)$; and -\item $f(p, \cdot) = g \circ f_1(p_1, \cdot) \circ \cdots \circ f_m(p_m, \cdot)$ -for all $p = (p_1, \ldots, p_m)$, for some fixed $g \in \Diff(X)$. -\end{itemize} -A chain $x \in CD_k(X)$ is (by definition) adapted to $\cU$ if it is the sum -of singular cells, each of which is adapted to $\cU$. - -(Actually, in this section we will only need families of diffeomorphisms to be -{\it weakly adapted} to $\cU$, meaning that the support of $f$ is contained in the union -of at most $k$ of the $U_\alpha$'s.) - -\begin{lemma} \label{extension_lemma} -Let $x \in CD_k(X)$ be a singular chain such that $\bd x$ is adapted to $\cU$. -Then $x$ is homotopic (rel boundary) to some $x' \in CD_k(X)$ which is adapted to $\cU$. -Furthermore, one can choose the homotopy so that its support is equal to the support of $x$. -\end{lemma} - -The proof will be given in Section \ref{sec:localising}. - -\medskip - -Before diving into the details, we outline our strategy for the proof of Proposition \ref{CDprop}. - -Let $p$ be a singular cell in $CD_*(X)$ and $b$ be a blob diagram in $\bc_*(X)$. -Suppose that there exists $V \sub X$ such that -\begin{enumerate} -\item $V$ is homeomorphic to a disjoint union of balls, and -\item $\supp(p) \cup \supp(b) \sub V$. -\end{enumerate} - -\medskip - -\nn{to be continued....} +\input{text/evmap} -%\nn{say something about associativity here} + + \input{text/A-infty.tex}