system of notations
51calendar — calendrical /keuh len dri keuhl/, calendric, calendarial /kal euhn dair ee euhl/, calendarian, calendaric, adj. /kal euhn deuhr/, n. 1. a table or register with the days of each month and week in a year: He marked the date on his calendar. 2. any …
52Nucleic acid notation — The nucleic acid notation currently in use was first formalized by the International Union of Pure and Applied Chemistry (IUPAC) in 1970.[1] This universally accepted notation uses the Roman characters G, C, A, and T, to represent the four… …
53Large numbers — This article is about large numbers in the sense of numbers that are significantly larger than those ordinarily used in everyday life, for instance in simple counting or in monetary transactions. The term typically refers to large positive… …
54Pen spinning — A combination of pen spinning tricks. Pen spinning is a form of object manipulation that involves the deft manipulation of a writing instrument with one s hands. Although it is often considered a form of self entertainment (usually in a… …
55Sergeyev Collection — The Sergeyev Collection is a collection of choreographic notation, music, photos, and set and costume designs that document with varying degrees of detail twenty four ballets and twenty four dances from various operas that made up the repertory… …
56History of mathematics — A proof from Euclid s Elements, widely considered the most influential textbook of all time.[1] …
57Wave function — Not to be confused with the related concept of the Wave equation Some trajectories of a harmonic oscillator (a ball attached to a spring) in classical mechanics (A B) and quantum mechanics (C H). In quantum mechanics (C H), the ball has a wave… …
58Vector notation — This page is an overview of the common notations used when working with vectors, which may be spatial or more abstract members of vector spaces.The common typographic convention for representing a vector is upright boldface type, as in v for a… …
59Pierre Hérigone —  Ne doit pas être confondu avec Érigone. Une démonstration de l Optique d Euclide traduite par Hérigone (Tome V) Pierre Hérigone, d origine basque …
60Oracle bone — For Chinese characters found on bones, see Oracle bone script. A Shang Dynasty oracle bone from the Shanghai Museum Oracle bones (Chinese: 甲骨; pinyin: jiǎgǔ) are pieces of bone normally from ox scapula or turtle plastron (underside) which were… …
