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The figure-eight knot has played an important role historically (and continues to do so) in the theory of 3-manifolds.Sometime in the mid-to-late 1970s, William Thurston showed that the figure-eight was hyperbolic, by decomposing its complement into two ideal hyperbolic tetrahedra.
80 is: the sum of Euler's totient function φ( x ) over the first sixteen integers. a semiperfect number , since adding up some subsets of its divisors (e.g., 1 , 4 , 5 , 10 , 20 and 40 ) gives 80.
Unicode originally included a limited set of such letter forms in its Letterlike Symbols block before completing the set of Latin and Greek letter forms in this block beginning in version 3.1. Unicode expressly recommends that these characters not be used in general text as a substitute for presentational markup ; [ 3 ] the letters are ...
With a government shutdown narrowly avoided late Friday into Saturday morning, the House and Senate sent a funding bill to President Joe Biden's desk. An initial bipartisan deal was tanked earlier ...
The National Weather Service predicted that there was a moderate risk of "hazardous cold" across the Northern Plains, with low temperatures that could get down to -10 degrees and feel even colder ...
Related: Dick Van Dyke, 98, Says He's 'Not Afraid' of Dying: 'I'm Acutely Aware I Could Go Any Day Now' The film was adapted from the 1964 children's novel Chitty-Chitty-Bang-Bang: The Magical Car ...
3 Feb [2] Những tháng năm yêu dấu (The Dearest Time) 1 VTV Center in Mekong Delta Châu Huế (director); Nguyễn Khắc Phục (writer) Drama Airs 20:15, 28th Tet holiday on VTV3: 4 Feb [3] [4] Nơi cơn lũ đi qua (Where the Flood Crossed) 1 (75′) VTV Film Prod.
CDC expects hospitalizations for flu and COVID-19 to start increasing in the coming weeks. It also sees increased RSV activity, particularly in young children, in the southern and eastern U.S. As ...