Mathematics and Mathematicians : Mathematics in Sweden before 1950
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Algebraic Q-Groups as Abstract Groups
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Differential Geometry of Singular Spaces and Reduction of Symmetry
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Gromov, Cauchy and Causal Boundaries for Riemannian, Finslerian and Lorentzian Manifolds
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Quaternionic Contact Einstein Structures and the Quaternionic Contact Yamabe Problem
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Influence of Solomon Lefschetz in Geometry and Topology : 50 Years of Mathematics at CINVESTAV
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