# HG changeset patch # User Kevin Walker # Date 1294382826 28800 # Node ID 72a1d5014abc07c51ca181429ba2042558da4eea # Parent e0bd7c5ec86419a30d59bda73b24586a3f32bafe compatibility of first and last n-cat axioms; mention stricter variant of last axiom diff -r e0bd7c5ec864 -r 72a1d5014abc text/ncat.tex --- a/text/ncat.tex Mon Dec 27 11:29:54 2010 -0800 +++ b/text/ncat.tex Thu Jan 06 22:47:06 2011 -0800 @@ -629,6 +629,8 @@ a diagram like the one in Theorem \ref{thm:CH} commutes. %\nn{repeat diagram here?} %\nn{restate this with $\Homeo(X\to X')$? what about boundary fixing property?} +On $C_0(\Homeo_\bd(X))\ot \cC(X; c)$ the action should coincide +with the one coming from Axiom \ref{axiom:morphisms}. \end{axiom} We should strengthen the above $A_\infty$ axiom to apply to families of collar maps. @@ -639,6 +641,8 @@ weak identities. We will not pursue this in detail here. +A variant on the above axiom would be to drop the ``up to homotopy" and require a strictly associative action. + Note that if we take homology of chain complexes, we turn an $A_\infty$ $n$-category into a plain $n$-category (enriched over graded groups). In a different direction, if we enrich over topological spaces instead of chain complexes,