Closed+conic
71Normal distribution — This article is about the univariate normal distribution. For normally distributed vectors, see Multivariate normal distribution. Probability density function The red line is the standard normal distribution Cumulative distribution function …
72Felix Klein — Born 25 April 1849(1849 04 25) Düsseldorf, Rhine, P …
73Rocky Mountain Douglas-fir — Taxobox name = Rocky Mountain Douglas fir status = LR/lc image width = 280px image caption = Rocky Mountain Douglas fir foliage regnum = Plantae divisio = Pinophyta classis = Pinopsida ordo = Pinales familia = Pinaceae genus = Pseudotsuga species …
74Riemann sphere — The Riemann sphere can be visualized as the complex number plane wrapped around a sphere (by some form of stereographic projection – details are given below). In mathematics, the Riemann sphere (or extended complex plane), named after the 19th… …
75St. John's College, U.S. — Infobox University name = St. John s College image size =135px motto = Facio liberos ex liberis libris libraque ( I make free men from children by means of books and a balance ) established = 1696, King William s School 1784, St. John s College… …
76Constantin Carathéodory — Born 13 September 1873 …
77Observational astronomy — Mayall telescope at Kitt Peak National Observatory Observational astronomy is a division of the astronomical science that is concerned with getting data, in contrast with theoretical astrophysics which is mainly concerned with finding out the… …
78Cubic surface — A cubic surface is a projective variety studied in algebraic geometry. It is an algebraic surface in three dimensional projective space defined by a single polynomial which is homogeneous of degree 3 (hence, cubic). Cubic surfaces are del Pezzo… …
79Great Basin Bristlecone Pine — Taxobox name = Great Basin Bristlecone Pine status = VU status system = iucn2.3 image width = 240px image caption = A Great Basin Bristlecone Pine in the White Mountains, California regnum = Plantae divisio = Pinophyta classis = Pinopsida ordo =… …
80Del Pezzo surface — In mathematics, a del Pezzo surface or Fano surface is a two dimensional Fano variety, in other words a non singular projective algebraic surface with ample anticanonical divisor class. They are in some sense the opposite of surfaces of general… …
