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The motivic Thom spectrum MG and the algebraic cobordism Ayoub Joseph
 

Summary: The motivic Thom spectrum MG and the algebraic cobordism
(-)
Ayoub Joseph
This is a report on a "work in progress" of F. Morel and M. J. Hopkins.
Their work is a step toward the identification of the motivically defined theory
MG 2,
(-) with the geometrically defined one
(-). Namely, they prove:
Theorem 1. For any smooth k-variety X the natural graded homomorphism
MG 2,
(X) -
(X) is surjective.
The plan of the lecture was:
(1) Some basic properties of MG .
(2) The computation of MG 2,
(k).
(3) Proof of the main theorem.
From now one, the base field k is fixed and all our varieties will be k-varieties.
For simplicity we shall assume k to be of characteristic zero.
1. Some basic properties of MG

  

Source: Ayoub, Joseph - Institut für Mathematik, Universität Zürich

 

Collections: Mathematics