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Strahler number. In mathematics, the Strahler number or Horton–Strahler number of a mathematical tree is a numerical measure of its branching complexity. These numbers were first developed in hydrology, as a way of measuring the complexity of rivers and streams, by Robert E. Horton ( 1945) and Arthur Newell Strahler ( 1952, 1957 ).
Released: 7 November 1994. "1963-95". Released: 9 January 1995. The Best of New Order (stylised as (the best of) NewOrder) is a greatest hits album by English band New Order. It was released in the United Kingdom on 21 November 1994 by London Records and, with a different track listing, in the United States on 14 March 1995 by Qwest Records and ...
An average order of σ(n), the sum of divisors of n, is nπ 2 / 6; An average order of φ(n), Euler's totient function of n, is 6n / π 2; An average order of r(n), the number of ways of expressing n as a sum of two squares, is π; The average order of representations of a natural number as a sum of three squares is 4πn / 3;
The sales order, sometimes abbreviated as SO, is an order issued by a business or sole trader to a customer. A sales order may be for products and/or services. Given the wide variety of businesses, this means that the orders can be fulfilled in several ways. Broadly, the fulfillment modes, based on the relationship between the order receipt and ...
Sprint medley relay. The sprint medley relay ( SMR) is a track and field event in which teams of four athletes compete over sprinting distances as part of a relay race. Unlike most track relays, each member of the team runs a different distance. The sprint medley is rather uncommon, run most frequently at non-championship track meets which are ...
Amazon was founded on July 5, 1994, by Jeff Bezos in Bellevue, Washington. [6] The company originally started as an online marketplace for books but gradually expanded its offerings to include a wide range of product categories. This diversification led to it being referred to as "The Everything Store". [7]
The Satellite Catalog Number ( SATCAT, also known as NORAD (North American Aerospace Defense) Catalog Number, NORAD ID, USSPACECOM object number or simply catalog number, among similar variants) is a sequential nine-digit number assigned by the United States Space Command (USSPACECOM) in the order of launch or discovery to all artificial ...
The Damköhler numbers ( Da) are dimensionless numbers used in chemical engineering to relate the chemical reaction timescale ( reaction rate) to the transport phenomena rate occurring in a system. It is named after German chemist Gerhard Damköhler, who worked in the fields of chemical engineering, thermodynamics, and fluid dynamics. [1]