Uber disputed the Gridwise findings to Business Insider, saying the report is based on “a very small fraction” of workers. In January, Uber asserted in a blog post that the portion of fares going to the company had stayed largely consistent or declined year-over-year, even as prices increased.
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# With both confidence and spans
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\(f\) is continuous (preimages of open sets are open),
The complexity of determining the minimum number of flips that transform one triangulation of a convex point set into another remained a tantalizing open question for many decades. We settle this question by proving that computing shortest flip sequences between triangulations of convex polygons, and therefore also computing the rotation distance of binary trees, is NP-hard.，详情可参考电影