# Twisted Tensor Products Related to the Cohomology of the Classifying Spaces of Loop Groups (Memoirs of the American Mathematical Society)

By: Mamoru Mimura (editor), Tetsu Nishimoto (editor), Katsuhiko Kuribayashi (editor)Paperback

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### Description

Let $G$ be a compact, simply connected, simple Lie group. By applying the notion of a twisted tensor product in the senses of Brown as well as of Hess, we construct an economical injective resolution to compute, as an algebra, the cotorsion product which is the $E_2$-term of the cobar type Eilenberg-Moore spectral sequence converging to the cohomology of classifying space of the loop group $LG$. As an application, the cohomology $H^*(BLSpin(10); \mathbb{Z}/2)$ is explicitly determined as an $H^*(BSpin(10); \mathbb{Z}/2)$-module by using effectively the cobar type spectral sequence and the Hochschild spectral sequence, and further, by analyzing the TV-model for $BSpin(10)$.

### Contents

Introduction The mod 2 cohomology of $BLSO(n)$ The mod 2 cohomology of $BLG$ for $G=Spin(n)\ (7\leq n\leq 9)$ The mod 2 cohomology of $BLG$ for $G=G 2,F 4$ A multiplication on a twisted tensor product The twisted tensor product associated with $H^*(Spin(N);\mathbb{Z}/2)$ A manner for calculating the homology of a DGA The Hochschild spectral sequence Proof of Theorem 1.6 Computation of a cotorsion product of $H^*(Spin(10);\mathbb{Z}/2)$ and the Hochschild homology of $H^*(BSpin(10);\mathbb{Z}/2)$ Proof of Theorem 1.7 Proofs of Proposition 1.9 and Theorem 1.10 Appendix Bibliography.

### Product Details

• ISBN13: 9780821838563
• Format: Paperback
• Number Of Pages: 85
• ID: 9780821838563
• ISBN10: 0821838563

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