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Chromatic homotopy theory
In mathematics, chromatic homotopy theory is a subfield of stable homotopy theory that studies complex-oriented cohomology theories from the "chromatic" point of view, which is based on Quillen's work relating cohomology theories to formal groups. In this picture, theories are classified in terms of their "chromatic levels"; i.e., the heights of the formal groups that define the theories via the Landweber exact functor theorem. Typical theories it studies include: complex K-theory, elliptic cohomology, Morava K-theory and tmf.
See also
Redshift conjecture
Ravenel conjectures
Moduli stack of formal group laws
References
J. Lurie, Chromatic Homotopy Theory (252x)
External links
http://ncatlab.org/nlab/show/chromatic+homotopy+theory
Undergraduate Texts in Mathematics
Graduate Studies in Mathematics
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