Please note: In order to keep Hive up to date and provide users with the best features, we are no longer able to fully support Internet Explorer. The site is still available to you, however some sections of the site may appear broken. We would encourage you to move to a more modern browser like Firefox, Edge or Chrome in order to experience the site fully.

Formality of the Little N-disks Operad, Paperback / softback Book

Formality of the Little N-disks Operad Paperback / softback

Part of the Memoirs of the American Mathematical Society series

Paperback / softback

Description

The little N-disks operad, B, along with its variants, is an important tool in homotopy theory.

It is defined in terms of configurations of disjoint N-dimensional disks inside the standard unit disk in Rn and it was initially conceived for detecting and understanding N-fold loop spaces.

Its many uses now stretch across a variety of disciplines including topology, algebra, and mathematical physics.

In this paper, the authors develop the details of Kontsevich's proof of the formality of little N-disks operad over the field of real numbers.

More precisely, one can consider the singular chains C* (BR) on B as well as the singular homology H*((BR) on B.

These two objects are operads in the category of chain complexes.

The formality then states that there is a zig-zag of quasi-isomorphisms connecting these two operads.

The formality also in some sense holds in the category of commutative differential graded algebras.

The authors additionally prove a relative version of the formality for the inclusion of the little m-disks operad in the little N-disks operad when N³ 2m 1.

Information

Other Formats

Information