diff -r 9fc815360797 -r daf58017eec5 text/evmap.tex --- a/text/evmap.tex Sat Apr 10 18:03:36 2010 -0700 +++ b/text/evmap.tex Sun Apr 11 10:38:38 2010 -0700 @@ -5,20 +5,13 @@ \nn{should comment at the start about any assumptions about smooth, PL etc.} -\noop{Note: At the moment this section is very inconsistent with respect to PL versus smooth, etc -We expect that everything is true in the PL category, but at the moment our proof -avails itself to smooth techniques. -Furthermore, it traditional in the literature to speak of $C_*(\Diff(X))$ -rather than $C_*(\Homeo(X))$.} - - Let $CH_*(X, Y)$ denote $C_*(\Homeo(X \to Y))$, the singular chain complex of the space of homeomorphisms between the $n$-manifolds $X$ and $Y$ (extending a fixed homeomorphism $\bd X \to \bd Y$). -For convenience, we will permit the singular cells generating $CH_*(X, Y)$ to be more general +We also will use the abbreviated notation $CH_*(X) \deq CH_*(X, X)$. +(For convenience, we will permit the singular cells generating $CH_*(X, Y)$ 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 $CH_*(X) \deq CH_*(X, X)$. +\nn{be more restrictive here? does more need to be said?}) \begin{prop} \label{CHprop} For $n$-manifolds $X$ and $Y$ there is a chain map @@ -204,7 +197,9 @@ The larger $i$ is (i.e.\ the smaller $\ep_i$ is), the better $G_*^{i,m}$ approximates all of $CH_*(X)\ot \bc_*(X)$ (see Lemma \ref{Gim_approx}). -Next we define a chain map (dependent on some choices) $e: G_*^{i,m} \to \bc_*(X)$. +Next we define a chain map (dependent on some choices) $e_{i,m}: G_*^{i,m} \to \bc_*(X)$. +(When the domain is clear from context we will drop the subscripts and write +simply $e: G_*^{i,m} \to \bc_*(X)$). Let $p\ot b \in G_*^{i,m}$. If $\deg(p) = 0$, define \[ @@ -309,8 +304,9 @@ \end{proof} Note that on $G_*^{i,m+1} \subeq G_*^{i,m}$, we have defined two maps, -call them $e_{i,m}$ and $e_{i,m+1}$. -An easy variation on the above lemma shows that $e_{i,m}$ and $e_{i,m+1}$ are $m$-th +$e_{i,m}$ and $e_{i,m+1}$. +An easy variation on the above lemma shows that +the restrictions of $e_{i,m}$ and $e_{i,m+1}$ to $G_*^{i,m+1}$ are $m$-th order homotopic. Next we show how to homotope chains in $CH_*(X)\ot \bc_*(X)$ to one of the @@ -435,6 +431,7 @@ If we replace $\ebb^n$ above with an arbitrary compact Riemannian manifold $M$, the same result holds, so long as $a$ is not too large: +\nn{what about PL? TOP?} \begin{lemma} \label{xxzz11} Let $M$ be a compact Riemannian manifold.