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math-ph2008
Time-periodic universes
De-Xing Kong, Kefeng Liu, Ming Shen
In this letter we construct a new time-periodic solution of the vacuum Einstein's field equations whose Riemann curvature norm takes the infinity at some points. We show that this…
math-ph2007★ 2 cited
Localization and Conjectures from String Duality
Kefeng Liu
We describe the applications of localization methods, in particular the functorial localization formula, in the proofs of several conjectures from string theory. Functorial localiz…