descending sets
51Meagre set — In the mathematical fields of general topology and descriptive set theory, a meagre set (also called a meager set or a set of first category) is a set that, considered as a subset of a (usually larger) topological space, is in a precise sense… …
52Marc Chagall — In Paris, 1921 Birth name Moishe Shagal Born 6 July 1887 (NS) Liozna, near Vite …
53eastern Africa — ▪ region, Africa Introduction part of sub Saharan Africa comprising two traditionally recognized regions: East Africa, made up of Kenya, Tanzania, and Uganda; and the Horn of Africa, made up of Somalia, Djibouti, Eritrea, and Ethiopia.… …
54Outline of algebraic structures — In universal algebra, a branch of pure mathematics, an algebraic structure is a variety or quasivariety. Abstract algebra is primarily the study of algebraic structures and their properties. Some axiomatic formal systems that are neither… …
55Spinal cord — Latin medulla spinalis The spinal cord nested in the vertebral column …
56Algebraic structure — In algebra, a branch of pure mathematics, an algebraic structure consists of one or more sets closed under one or more operations, satisfying some axioms. Abstract algebra is primarily the study of algebraic structures and their properties. The… …
57George Mallory — George Herbert Leigh Mallory George Mallory Born 18 June 1886(1886 06 18) Mobberley, Cheshire, England Died …
58Timeline of climbing Mount Everest — Contents 1 Timeline 1.1 1921: Reconnaissance expedition 1.2 1922: First attempt …
59List of algebraic structures — In universal algebra, a branch of pure mathematics, an algebraic structure is a variety or quasivariety. Abstract algebra is primarily the study of algebraic structures and their properties. Some axiomatic formal systems that are neither… …
60December 2010 lunar eclipse — Total lunar eclipse 2010/12/21 [1] Saros (member) 125 (48) Recent <S <T < > T> S> …
