Some notes about
, and some
showing that the Stasheff operad cannot be constructed in various ways that one might hope for.
Two notes giving examples related to number fields and elliptic curves: one about
points of order 5
, and one about
points of order 9
A conjecture about
spectra of units
An expository account of
The Steinberg module and the Hecke algebra
introduction to the stable category
Finite subgroups of formal groups
: a version of my published paper of the same title, but with more expository material.
of results about the topology of spaces related to linear algebra.
model structures for chain complexes
Brief notes on
and infinite Grassmannians.