GR1

	Developments in geometry (in particular, the corformal diagrams for dealing with infinities) originated from Penrose and Carter have turned out to be of great help to study solutions of interest in cosmology and other gravitational systems.

	Besides the contributions by Hawking, our works on black holes are very much indebted to the seminal developments done by the three scientists who appear in the drowing on the left.

	Hartle is perhaps the physicist who has contributed most to the development of Quantum Cosmology. Besides his rather decisive works with Hawking y Halliwell on the wave function of the universe, Hartle has conducted most of the work that led to constructing the "Sum-over-Histories " method and the "generalized Quantum Theory", both of decisive importance for the quantum treatment of nonfoliating manifolds that characterize the systems containing CTCs.

R. Penrose, The Emperor's New Mind (Vintage, London, 1990): Apart his rather immense contributions in mathematics and physics, I remark here this extraordinary book because it is an excellent example of cleverly combining the advances in general relativity with other modern topics, including artificial intelligence, consciousness, cosmology, philosophy and ultimately an interpretation of what human mind actually may be.

J.B. Hartle, Generalized Quantum Theory, Phys. Rev. D49, 6543 (1994); Int. J. Mod. Phys. A16, 1 (2001): Starting with the sum-over-histories approach to quantum theory, a general and detailed treatment is provided for the formulation of the Decoherence Function and its applications to nonfoliating manifolds.