He was the Lucasian Professor of Mathematics at the University of Cambridge between 1979 and 2009. His scientific works included a collaboration with Roger Penrose on gravitational singularity theorems in the framework of general relativity and the theoretical prediction that black holes emit radiation, ...
In view of Theorems 3.4 and 3.6, it is natural to seek the exact values for 𝑃𝑛Pn and 𝐶𝑛Cn. Problem 2. 𝜒(ℒ2(𝑃𝑛))=?χ(L2(Pn))=? Problem 3. 𝜒(ℒ2(𝐶𝑛))=?χ(L2(Cn))=? The following conjectures seem to be true. Conjecture 1. For any tree T of...
MAM. I will have all my beds blown up, not stuft; Down is too hard: and then, mine oval room Fill'd with such pictures as Tiberius took From Elephantis, and dull Aretine But coldly imitated. Then, my glasses Cut in more subtle angles, to disperse And multiply the figures, as I ...
We put the program transformation method known as supercompilation in the context of works on counter systems, well-structured transition systems, Petri nets, etc. Two classic versions of the supercompilation algorithm are formulated for counter systems,