Ross Duncan |

Tue 02 Feb 2016, 16:00 - 17:00 |

IF 4.31/4.33 |

If you have a question about this talk, please contact: Rik Sarkar (rsarkar)

Theories featuring the interaction between a Frobenius algebra and a Hopf algebra have recently appeared in several areas in computer science: concurrent programming, control theory, and quantum computing, among others. Bonchi, Sobocinski, and Zanasi (2014) have shown that, given a suitable distributive law, a pair of Hopf algebras forms two Frobenius algebras. Here we take the opposite approach, and show that interacting Frobenius algebras form Hopf algebras. We generalise (BSZ 2014) by including non-trivial dynamics of the underlying object---the so-called phase group---and investigate the effects of finite dimensionality of the underlying model. We recover the system of Bonchi et al as a subtheory in the prime power dimensional case, but the more general theory does not arise from a distributive law.

The talk is based on: http://arxiv.org/abs/1601.04964

Brief Bio: Ross Duncan is a lecturer at Strathclyde since October 2013. He completed BSc Hons Edinburgh 2001; DPhil from Oxford 2007; Following which he was a post-doc ion Oxford, then in Brussels. He likes category theory, graphical languages and quantum computing.