• Publications
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Skein theory and Turaev-Viro invariants
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Classical 6j-symbols and the tetrahedron
A classical 6j-symbol is a real number which can be associated to a labelling of the six edges of a tetrahedron by irreducible representations of SU(2). This abstract association is traditionallyExpand
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Irreducibility of some quantum representations of mapping class groups
The SU(2) TQFT representation of the mapping class group of a closed surface of genus g, at a root of unity of prime order, is shown to be irreducible. Some examples of reducible representations areExpand
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On central extensions of mapping class groups
The mapping class group representations related to quanttttn invariants (/~ la Jones, Witten [35], Reshetikhin-Turaev [26], Lickorish [17, tS], Blanchet et aL [5~, Wenz! ~34~, T~r~ev-Wenz~ ~3~, ~ndExpand
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Release characteristics of selected carbon nanotube polymer composites
Abstract Multi-walled carbon nanotubes (MWCNTs) are commonly used in polymer formulations to improve strength, conductivity, and other attributes. A developing concern is the potential for carbonExpand
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Everyone knows that the Euler characteristic of a combinatorial manifold is given by the alternating sum of its numbers of simplices. It is shown that there are other linear combinations of theExpand
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Rozansky-Witten theory
Rozansky and Witten proposed in 1996 a family of new three-dimensional topological quantum field theories, indexed by compact (or asymptotically flat) hyperkaehler manifolds. As a byproduct theyExpand
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Surrendering Surinam: The Barbadian Diaspora and the Expansion of the English Sugar Frontier, 1650–75
Abstract:Before 1667, Surinam was the next major frontier for Barbadians who wanted to expand the sugar plantation complex. A proprietary colony under the control of Francis Willoughby, governor ofExpand
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Kirby calculus in manifolds with boundary
Suppose there are two framed links in a compact, connected 3-manifold (possibly with boundary, or non-orientable) such that the associated 3-manifolds obtained by surgery are homeomorphic (relativeExpand
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