Create a Want BookSleuth Can't remember the title or the author of a book? Greene's second book, Space. The most important of these shapes are so-called Calabi-Yau manifolds; when the extra dimensions take on those particular form, physics in three dimensions exhibits an abstract symmetry known as supersymmetry. He is also known for his research on the flop transition, a mild form of topology change, showing that topology in string theory can change at the conifold point. Michael Shermer
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