minor - Section 4
authorKevin Walker <kevin@canyon23.net>
Thu, 08 Dec 2011 17:41:42 -0800
changeset 940 04079a7aeaef
parent 939 e3c5c55d901d
child 941 ee0c940fce59
child 942 598085348dd1
minor - Section 4
text/hochschild.tex
--- a/text/hochschild.tex	Thu Dec 08 15:57:34 2011 -0800
+++ b/text/hochschild.tex	Thu Dec 08 17:41:42 2011 -0800
@@ -212,7 +212,7 @@
 (a) the point * is not on the boundary of any blob or
 (b) there are no labeled points or blob boundaries within distance $\ep$ of *,
 other than blob boundaries at * itself.
-Note that all blob diagrams are in $F_*^\ep$ for $\ep$ sufficiently small.
+Note that all blob diagrams are in some $F_*^\ep$ for $\ep$ sufficiently small.
 Let $b$ be a blob diagram in $F_*^\ep$.
 Define $f(b)$ to be the result of moving any blob boundary points which lie on *
 to distance $\ep$ from *.
@@ -228,6 +228,7 @@
 Otherwise, define $s(y)$ to be the result of adding a label 1 (identity morphism) at *.
 Extending linearly, we get the desired map $s: J_* \to K_*(C)$.
 It is easy to check that $s$ is a chain map and $s \circ i = \id$.
+What remains is to show that $i \circ s$ is homotopic to the identity.
 
 Let $N_\ep$ denote the ball of radius $\ep$ around *.
 Let $L_*^\ep \sub J_*$ be the subcomplex