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比利时vs摩洛哥足彩
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比利时vs摩洛哥足彩
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university of california san diego
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differential geometry seminar
yuxin ge
university paris 12 \\ university of washington
on the $\sigma_2$-scalar curvature and its application
abstract:
in this talk, we establish an analytic foundation for a fully non-linear equation $\frac{\sigma_2}{\sigma_1}=f$ on manifolds with positive scalar curvature. this equation arises from conformal geometry. as application, we prove that, if a compact 3-dimensional manifold $m$ admits a riemannian metric with positive scalar curvature and $\int \sigma_2\ge 0$, then topologically $m$ is a quotient of sphere.
hosts: ben chow and lei ni
march 10, 2008
4:00 pm
ap&m 6402
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