In 1978, Alexander Schrijver defined the stable Kneser graphs as a vertex critical subgraphs of graphs. early 2000s, Günter M. Ziegler generalized Schrijver’s construction and s-stable Thereafter Frédéric Meunier determined chromatic number for special cases formulated conjecture on this paper we study generalization For some specific values parameter show that neighborhood complex < s, t &g...

Kervaire and Milnor's germinal paper [15], in which they used the newly-discovered techniques of surgery to begin the classification of smooth closed manifolds homotopy equivalent to a sphere (homotopy-spheres), was intended to be the first of two papers in which this classification would be essentially completed (in dimensions > 5). Unfortunately , the second part never appeared. As a result, ...

We construct the algebraic stack of formal groups and use it to provide a new perspective onto a recent result of M. Hovey and N. Strickland on comodule categories for Landweber exact algebras. This leads to a geometric understanding of their results as well as to a generalisation.

One striking difference between nonequivariant and equivariant stable homotopy is that, in the equivariant context, one must specify those representations with respect to which spectra are to be stable. One may specify stability with respect only to trivial representations (thereby obtaining what is often called the naive equivariant stable category), with respect to all representations (thereb...