Copyright © 2012 Toshihiro Yamaguchi. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
There is a CW complex , which gives a
rational homotopical classification of almost free toral actions on spaces in the
rational homotopy type of X associated with rational toral ranks and also
presents certain relations in them. We call it the rational toral rank complex
of X. It represents a variety of toral actions. In this note, we will give effective
2-dimensional examples of it when X is a finite product of odd spheres. This
is a combinatorial approach in rational homotopy theory.