Iranians crowd the main square in Tehran in August 1954 to celebrate the first anniversary of the arrest of former Premier Mohammad Mossadegh. Bettmann/Contributor/Getty Images
Екатерина Ештокина。业内人士推荐PDF资料作为进阶阅读
ASCII row 0 = image row 0, left half，推荐阅读同城约会获取更多信息
The same decomposition works in higher dimensions. For NNN random points on a sphere, the probability they all lie in a hemisphere is also N/2N−1N / 2^{N-1}N/2N−1. The argument is identical: anchor a hemisphere at each point, observe that each event has probability 1/2N−11/2^{N-1}1/2N−1, and verify that at most one anchor can work (the complementary cap is at least a full hemisphere, so no other anchor's hemisphere can straddle it). TODO: If I figure out how to add 3d visualizations to this website, I'll cover the 3D case。业内人士推荐WPS官方版本下载作为进阶阅读