12 Nov
2001
12 Nov
'01
2:30 p.m.
Keith Williamson asked about the above. Stefano Kasangian and I have written something on this: S. Kasangian and Max Kelly, A bicategorical approach to information flow and security, in Categorical Studies in Italy, = Rendiconti del Circolo Matematico di Palermo, 64 (2000), 99 -- 122. Max Kelly (= G.M. Kelly)