Holmstrom Topological Hochschild homology

Topological Hochschild homology

A homology theory for ring spectra.


Topological Hochschild homology

Introduced by Bokstedt in the early 80s.


Topological Hochschild homology

See Ostvaer for an introduction to maps from algebraic K-theory to Hochschild homology (Dennis trace map), topological Hochschild homology, and topological cyclic homology (cyclotomic trace map). These fit into a commutative diagram with maps from TC to THH and from THH to HH.


Topological Hochschild homology

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Topological Hochschild homology

CT (Category theory)?, AT (Algebraic topology)?, AG (Algebraic geometry)?, NCG (Algebra and noncommutative geometry)?

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Topological Hochschild homology

A brief and nice introduction is found in Hesselholt’s chapter in the K-theory handbook.

Bokstedt: Topological Hochshild homology. Preprint, 1985.

Waldhausen et al in JLMS: THH article

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Topological Hochschild homology

Rognes: http://www.math.uiuc.edu/K-theory/118, http://www.math.uiuc.edu/K-theory/119, http://www.math.uiuc.edu/K-theory/120

Ausoni

[arXiv:1006.4347] Topological Hochschild Homology of K/pK/p as a K p K_p^\wedge module from arXiv Front: math.AT by Samik Basu Let RR be an E E_\infty-ring spectrum. Given a map ζ\zeta from a space XX to BGL 1RBGL_1R, one can construct a Thom spectrum, X ζX^\zeta, which generalises the classical notion of Thom spectrum for spherical fibrations in the case R=S 0R=S^0, the sphere spectrum. If XX is a loop space (ΩY\simeq \Omega Y) and ζ\zeta is homotopy equivalent to Ωf\Omega f for a map ff from YY to B 2GL 1RB^2GL_1R, then the Thom spectrum has an A A_\infty-ring structure. The Topological Hochschild Homology of these A A_\infty-ring spectra is equivalent to the Thom spectrum of a map out of the free loop space of YY

This paper considers the case X=S 1X=S^1, R=K p R=K_p^\wedge, the p-adic KK-theory spectrum, and ζ=1pπ 1BGL 1K p \zeta = 1-p \in \pi_1BGL_1K_p^\wedge. The associated Thom spectrum (S 1) ζ(S^1)^\zeta is equivalent to the mod p KK-theory spectrum K/pK/p. The map ζ\zeta is homotopy equivalent to a loop map, so the Thom spectrum has an A A_\infty-ring structure. I will compute π *THH K p (K/p)\pi_*THH^{K_p^\wedge}(K/p) using its description as a Thom spectrum.


Topological Hochschild homology

An interesting paper by Shipley

Page 33 of Weibel

Greenlees: Spectra for commutative algebraists (Homotopy theory folder). Applications: Section 6A discussion Topological HH, section 6B discusses trace maps.


Topological Hochschild homology

Preprint in progress of Rognes: On the Tate construction of topological Hochschild homology and its relation to the construction of Singer

Preprint in progress of Rognes: Topological Hochschild homology of topological modular forms

Localization for THH(ku) and the topological Hochschild and cyclic homology of Waldhausen categories, by Blumberg and Mandell: Link. Abstract: We prove a conjecture of Hesselholt and Ausoni-Rognes, establishing localization cofiber sequences of spectra for THH(ku) and TC(ku). These sequences support Hesselholt’s view of the map l to ku as a “tamely ramified” extension of ring spectra, and validate the hypotheses necessary for Ausoni’s simplified computation of V(1)_* K(KU). In order to make sense of the relative term THH(ku|KU) in the cofiber sequence and prove these results, we develop a theory of THH and TC of Waldhausen categories and prove the analogues of Waldhausen’s theorems for K-theory. We resolve the longstanding confusion about localization sequences in THH and TC, and establish a specialized devissage theorem.

nLab page on Topological Hochschild homology

Created on June 10, 2014 at 21:14:54 by Andreas Holmström