diff -r e0b304e6b975 -r e1d24be683bb text/basic_properties.tex --- a/text/basic_properties.tex Wed Oct 28 00:54:35 2009 +0000 +++ b/text/basic_properties.tex Wed Oct 28 02:44:29 2009 +0000 @@ -27,7 +27,7 @@ we have a splitting $s: H_0(\bc_*(B^n, c)) \to \bc_0(B^n; c)$ of the quotient map $p: \bc_0(B^n; c) \to H_0(\bc_*(B^n, c))$. -For example, this is always the case if you coefficient ring is a field. +For example, this is always the case if the coefficient ring is a field. Then \begin{prop} \label{bcontract} For all $c \in \cC(\bd B^n)$ the natural map $p: \bc_*(B^n, c) \to H_0(\bc_*(B^n, c))$ @@ -66,14 +66,14 @@ \begin{prop} For fixed fields ($n$-cat), $\bc_*$ is a functor from the category -of $n$-manifolds and diffeomorphisms to the category of chain complexes and +of $n$-manifolds and homeomorphisms to the category of chain complexes and (chain map) isomorphisms. \qed \end{prop} In particular, \begin{prop} \label{diff0prop} -There is an action of $\Diff(X)$ on $\bc_*(X)$. +There is an action of $\Homeo(X)$ on $\bc_*(X)$. \qed \end{prop} @@ -106,16 +106,16 @@ The above map is very far from being an isomorphism, even on homology. This will be fixed in Section \ref{sec:gluing} below. -\nn{Next para not need, since we already use bullet = gluing notation above(?)} +%\nn{Next para not needed, since we already use bullet = gluing notation above(?)} -An instance of gluing we will encounter frequently below is where $X = X_1 \du X_2$ -and $X\sgl = X_1 \cup_Y X_2$. -(Typically one of $X_1$ or $X_2$ is a disjoint union of balls.) -For $x_i \in \bc_*(X_i)$, we introduce the notation -\eq{ - x_1 \bullet x_2 \deq \gl(x_1 \otimes x_2) . -} -Note that we have resumed our habit of omitting boundary labels from the notation. +%An instance of gluing we will encounter frequently below is where $X = X_1 \du X_2$ +%and $X\sgl = X_1 \cup_Y X_2$. +%(Typically one of $X_1$ or $X_2$ is a disjoint union of balls.) +%For $x_i \in \bc_*(X_i)$, we introduce the notation +%\eq{ +% x_1 \bullet x_2 \deq \gl(x_1 \otimes x_2) . +%} +%Note that we have resumed our habit of omitting boundary labels from the notation.