text/hochschild.tex
changeset 221 77b0cdeb0fcd
parent 220 d31a9c505f29
child 230 ebdcbb16f55e
equal deleted inserted replaced
220:d31a9c505f29 221:77b0cdeb0fcd
   182 is always a labeled point in $K_*(C)$, while in $\bc_*(S^1)$ it may or may not be.
   182 is always a labeled point in $K_*(C)$, while in $\bc_*(S^1)$ it may or may not be.
   183 In particular, there is an inclusion map $i: K_*(C) \to \bc_*(S^1)$.
   183 In particular, there is an inclusion map $i: K_*(C) \to \bc_*(S^1)$.
   184 
   184 
   185 We want to define a homotopy inverse to the above inclusion, but before doing so
   185 We want to define a homotopy inverse to the above inclusion, but before doing so
   186 we must replace $\bc_*(S^1)$ with a homotopy equivalent subcomplex.
   186 we must replace $\bc_*(S^1)$ with a homotopy equivalent subcomplex.
   187 Let $J_* \sub \bc_*(S^1)$ be the subcomplex where * does not lie to the boundary
   187 Let $J_* \sub \bc_*(S^1)$ be the subcomplex where * does not lie on the boundary
   188 of any blob.  Note that the image of $i$ is contained in $J_*$.
   188 of any blob.  Note that the image of $i$ is contained in $J_*$.
   189 Note also that in $\bc_*(S^1)$ (away from $J_*$) 
   189 Note also that in $\bc_*(S^1)$ (away from $J_*$) 
   190 a blob diagram could have multiple (nested) blobs whose
   190 a blob diagram could have multiple (nested) blobs whose
   191 boundaries contain *, on both the right and left of *.
   191 boundaries contain *, on both the right and left of *.
   192 
   192