# Publishing house / Banach Center Publications / All volumes

## The $p_1$-central extension of the Mapping Class Group of orientable surfaces

### Volume 42 / 1998

Banach Center Publications 42 (1998), 111-117 DOI: 10.4064/-42-1-111-117

#### Abstract

Topological Quantum Field Theories are closely related to representations of Mapping Class Groups of surfaces. Considering the case of the TQFTs derived from the Kauffman bracket, we describe the central extension coming from this representation, which is just a projective extension.

#### Authors

• Sylvain Gervais

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