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Home » UC Berkeley Topology Seminar: On a nilpotence conjecture of J.P. May


UC Berkeley Topology Seminar: On a nilpotence conjecture of J.P. May April 02, 2014 (04:10 PM PDT - 05:00 PM PDT)
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Location: 3 Evans Hall
Speaker(s) Justin Noel (Universit├Ąt Regensburg)
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In 1986 Peter May made the following conjecture:

Suppose that R is a ring spectrum with power operations (e.g., an E∞ ring spectrum/ commutative S-algebra). Then the torsion elements in the kernel of the integral Hurewicz homomorphism π∗ R → H∗(R;𝕫) are nilpotent.

If R is the sphere spectrum, this is Nishida's nilpotence theorem. If we strengthen the condition on the integral homology to a condition about the complex bordism of R, then this is a special case of the nilpotence theorem of Devinatz, Hopkins, and Smith.

The proof is short and simple, using only results that have been around since the late 90's. As a corollary we obtain results on the non-existence of commutative S-algebra structures on various quotients of MU. For example MU / (pi) or ku / (pi v) for i > 0. We also obtain new results about the behavior of the Adams spectral sequence for Thom and THH spectra.

This project is joint with Akhil Mathew and Niko Naumann.

I will fill any remaining time with some fun results about ring spectra with power operations.

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