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Algebraic and topological K-theory, relations with topology, commutative algebra, and operator algebras

28 votes

Does Milnor K-Theory arise from Waldhausen K-Theory

Bob Thomason proved that there is no Milnor K-theory functor for schemes, with a reasonable map to Quillen K-theory, in: Le principe de scindage et l'inexistence d'une $K$-theorie de Milnor gl …
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16 votes

Is there a simple relationship between K-theory and Galois theory?

A simpler statement may be that if $F \to E$ is a $G$-Galois extension, then there is a map $K(F) \to K(E)^{hG}$ from the algebraic $K$-theory space of $F$ to the $G$-homotopy fixed points of the alge …
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13 votes

Morava on Shafarevich conjecture

(3) The statement is that the map of ring spectra $S \to HZ$ induces a rational equivalence $K(S) \to K(Z)$. A reference is Proposition 2.2 in: Waldhausen, Friedhelm: Algebraic $K$-theory of to …
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8 votes

Good reference for topological Hochschild homology

Ib Madsen's survey MR1474979 (98g:19004) Madsen, Ib Algebraic K-theory and traces. Current developments in mathematics, 1995 (Cambridge, MA), 191–321, Int. Press, Cambridge, MA, 1994. was written to …
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7 votes

The complex $K$-theory of the Thom spectrum $MU$

You can learn about this, and more, in Part II of Adams' "Stable Homotopy and Generalised Homology" (1974), especially section 4, in the special case $E = KU$.
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5 votes
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Torsion In $K$ theory on simply connected manifolds

Let $X$ be a $2$-connected closed $7$-manifold with $H_3(X) = H^4(X) = \mathbb{Z}/2$. Then $\tilde K(X) = \widetilde{KU}^0(X)$ equals $\mathbb{Z}/2$. This follows from the Atiyah--Hirzebruch spectra …
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4 votes

Injectivity of assembly in A-theory for $BC_2 = \mathbb R P^\infty$ in degree $4$

Not an answer, but a possible approach: Using Dundas' cartesian square with corners $A(*)$, $K(Z)$, $TC(*)$ and $TC(Z)$ you can see that $Wh^{Diff}_3(*) = Z/2$ comes from $TC_4(Z) = Z/8$ (plus odd tor …
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