# HG changeset patch # User kevin@6e1638ff-ae45-0410-89bd-df963105f760 # Date 1266904152 0 # Node ID ef127ac682bd54b3bfe0e6bd69f7d100a9382e8a # Parent 5200a0eac737204261f29b0e75b958557d7dca0f ... diff -r 5200a0eac737 -r ef127ac682bd text/a_inf_blob.tex --- a/text/a_inf_blob.tex Mon Feb 22 15:32:27 2010 +0000 +++ b/text/a_inf_blob.tex Tue Feb 23 05:49:12 2010 +0000 @@ -251,6 +251,28 @@ \medskip + +The next theorem shows how to reconstruct a mapping space from local data. +Let $T$ be a topological space, let $M$ be an $n$-manifold, +and recall the $A_\infty$ $n$-category $\pi^\infty_{\leq n}(T)$ +of Example \ref{ex:chains-of-maps-to-a-space}. +Think of $\pi^\infty_{\leq n}(T)$ as encoding everything you would ever +want to know about spaces of maps of $k$-balls into $T$ ($k\le n$). +To simplify notation, let $\cT = \pi^\infty_{\leq n}(T)$. + +\begin{thm} \label{thm:map-recon} +$\cB^\cT(M) \simeq C_*(\Maps(M\to T))$. +\end{thm} +\begin{proof} +\nn{obvious map in one direction; use \ref{extension_lemma_b}; ...} +\end{proof} + +\nn{should also mention version where we enrich over +spaces rather than chain complexes; should comment on Lurie's (and others') similar result +for the $E_\infty$ case, and mention that our version does not require +any connectivity assumptions} + +\medskip \hrule \medskip diff -r 5200a0eac737 -r ef127ac682bd text/ncat.tex --- a/text/ncat.tex Mon Feb 22 15:32:27 2010 +0000 +++ b/text/ncat.tex Tue Feb 23 05:49:12 2010 +0000 @@ -572,9 +572,10 @@ Define $\pi^\infty_{\leq n}(T)(X; c)$ for an $n$-ball $X$ and $c \in \pi^\infty_{\leq n}(T)(\bdy X)$ to be the chain complex $$C_*(\Maps_c(X\times F \to T)),$$ where $\Maps_c$ denotes continuous maps restricting to $c$ on the boundary, and $C_*$ denotes singular chains. +\nn{maybe should also mention version where we enrich over spaces rather than chain complexes} \end{example} -See ??? below, recovering $C_*(\Maps{M \to T})$ as (up to homotopy) the blob complex of $M$ with coefficients in $\pi^\infty_{\le n}(T)$. +See \ref{thm:map-recon} below, recovering $C_*(\Maps{M \to T})$ as (up to homotopy) the blob complex of $M$ with coefficients in $\pi^\infty_{\le n}(T)$. \begin{example}[Blob complexes of balls (with a fiber)] \rm