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most citedA Gravitational Lens need not produce an Odd Number of Images

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math-ph2004

Maxwell's Equations

Daniel Henry Gottlieb

We express Maxwell's equations as a single equation, first using the divergence of a special type of matrix field to obtain the four current, and then the divergence of a special m…

math.AT2004

Transfers and Periodic Orbits

Daniel Henry Gottlieb

Bo Ju Jiang applied Neilsen theory to the study of periodic orbits of a homeomorphism. His method employs a certain loop in the mapping torus of the homeomorphism. Our interest con…