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Robert Bartnik é um matemático australiano, professor da Universidade Monash, conhecido por suas contribuições ao estudo rigoroso da relatividade geral.
, Robert Bartnik is an Australian mathematic … Robert Bartnik is an Australian mathematician based at Monash University. He is known for his contributions to the rigorous mathematical study of general relativity. He received his bachelor's and master's degrees from Melbourne University and a PhD in mathematics from Princeton University in 1983, where his advisor was Shing-Tung Yau. In 2004 he was elected to the Australian Academy of Science, with citation: Professor Bartnik is renowned internationally for the application of geometric analysis to mathematical problems arising in Einstein's theory of general relativity. His work is characterised by his ability to uncover new and anticipated phenomena in space-time geometry, often employing sophisticated tools from linear and nonlinear partial differential equations as well as elaborate numerical computations. He has contributed greatly to our understanding of the properties of the Einstein equations and gravitation. His work with John McKinnon has been widely studied in the physics literature. They show that there is a discrete set of static solutions to the coupled Einstein/Yang-Mills equations which are geodesically complete and asymptotically flat. This is interesting since such solutions are known not to exist in the cases of the Einstein vacuum equations, the coupled Einstein/Maxwell equations, and the Yang-Mills equations. Although Bartnik and McKinnon's work was numerical, their observed phenomena has been mathematically justified by Joel Smoller, Arthur Wasserman, Shing-Tung Yau, and Joel McLeod. In the mathematics literature, he is known for his work with Leon Simon on solving the Dirichlet problem for prescribed mean curvature, in the setting of spacelike hypersurfaces of Minkowski space. His most widely cited work is on the geometric and analytic study of the ADM mass. He shows that it is geometrically defined by constructing "optimal" asymptotically flat coordinates, and gives an extension of Edward Witten's proof of the time-symmetric positive energy theorem to the higher-dimensional spin setting. He was a visiting scholar at the Institute for Advanced Study in 1980-81.e Institute for Advanced Study in 1980-81.
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, https://projecteuclid.org/journals/communications-in-mathematical-physics/volume-94/issue-2/Existence-of-maximal-surfaces-in-asymptotically-flat-spacetimes/cmp/1103941280.full%7Cmr=0761792%7Cs2cid=120000484 +
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Robert Bartnik é um matemático australiano, professor da Universidade Monash, conhecido por suas contribuições ao estudo rigoroso da relatividade geral.
, Robert Bartnik is an Australian mathematic … Robert Bartnik is an Australian mathematician based at Monash University. He is known for his contributions to the rigorous mathematical study of general relativity. He received his bachelor's and master's degrees from Melbourne University and a PhD in mathematics from Princeton University in 1983, where his advisor was Shing-Tung Yau. In 2004 he was elected to the Australian Academy of Science, with citation: He was a visiting scholar at the Institute for Advanced Study in 1980-81.e Institute for Advanced Study in 1980-81.
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Robert Bartnik
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