例句與造句

1. It has a flat metric outside the set \ Sigma images of the vertices.
2. Finally, Akito Futaki showed that strongly scalar-flat metrics ( as defined above ) are extremely special.
3. By far the hardest part of proving the equivalences between the various properties above is proving the existence of Ricci-flat metrics.
4. Under normalized Ricci flow, compact manifolds with this geometry converge to "'R "'2 with the flat metric.
5. where " f " is the conformal factor of the metric with respect to a unit area flat metric in its conformal class.
6. It's difficult to find flat metric in a sentence. 用flat metric造句挺難的
7. The geometric structure obtained in this way is a flat metric outside of a finite number of singular points with cone angles positive multiples of \ pi.
8. It's because I'm actually interested in the ( unit volume ) flat metrics on the torus, so rotating / scaling are irrelevant.
9. They were originally defined as compact K鋒ler manifolds with a vanishing first Chern class and a Ricci-flat metric, though many other similar but inequivalent definitions are sometimes used.
10. Although an arbitrarily curved space is very complex to describe, the curvature of a space which is locally isotropic and cylinder can both be given flat metrics, but differ in their topology.
11. There are 17 compact 2-dimensional orbifolds with flat metric ( including the torus and Klein bottle ), listed in the article on orbifolds, that correspond to the 17 wallpaper groups.
12. Liouville's equation appears in the study of isothermal coordinates in differential geometry : the independent variables are the coordinates, while can be described as the conformal factor with respect to the flat metric.
13. Enriques surfaces give examples of complex manifolds that have Ricci-flat metrics, but their canonical bundles are not trivial so they are Calabi & ndash; Yau manifolds according to the second but not the first definition above.
14. where Var is the probabilistic variance while " f " is the conformal factor expressing the metric " g " in terms of the flat metric of unit area in the conformal class of " g ".
15. However, requiring stratified-conformally flat metrics rules out the possibility of recovering the weak-field Kerr metric, and is certainly inconsistent with the claim that PV can give a " general " " approximation " of the general theory of relativity.
16. The borderline case ( 2 ) can be described as the class of manifolds with a "'strongly scalar-flat metric "', meaning a metric with scalar curvature zero such that " M " has no metric with positive scalar curvature.
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