Operations and co-operations in Morava -theory.
Semisimple ring spectra.
Injective comodules and Landweber exact homology theories
We classify the indecomposable injective E(n)⁎E(n)-comodules, where E(n) is the Johnson-Wilson homology theory. They are suspensions of the , where 0 ≤ r ≤ n, with the endomorphism ring of being , where denotes the completion of E(r).
Bounds on the distinguishing chromatic number.
Spin bordism and elliptic homology.
Spin cobordism determines real K-theory.
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