The connected generalized Cayley graphs

In this paper, we provide the sufficient and necessary conditions for generalized Cayley graphs to be connected and bipartite, respectively. As a consequence, we determine the groups whose all generalized Cayley cubic graphs are connected and integral

Causal Dynamics of Discrete Surfaces

We formalize the intuitive idea of a labelled discrete surface which evolves in time, subject to two natural constraints: the evolution does not propagate information too fast; and it acts everywhere the same.Comment: In Proceedings DCM 2013, arXiv:1403.768