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e. In mathematics, a differential-algebraic system of equations ( DAE) is a system of equations that either contains differential equations and algebraic equations, or is equivalent to such a system. The set of the solutions of such a system is a differential algebraic variety, and corresponds to an ideal in a differential algebra of ...
Stiff equation. In mathematics, a stiff equation is a differential equation for which certain numerical methods for solving the equation are numerically unstable, unless the step size is taken to be extremely small. It has proven difficult to formulate a precise definition of stiffness, but the main idea is that the equation includes some terms ...
A performance indicator or key performance indicator ( KPI) is a type of performance measurement. [1] KPIs evaluate the success of an organization or of a particular activity (such as projects, programs, products and other initiatives) in which it engages. [2] KPIs provide a focus for strategic and operational improvement, create an analytical ...
979 – Universal International Premium Rate Service (UIPRS); (formerly assigned to Abu Dhabi, now part of 971 United Arab Emirates) 98 – Iran. 990 – unassigned. 991 – unassigned (formerly used for International Telecommunications Public Correspondence Service) 992 – Tajikistan.
An ode (from Ancient Greek: ᾠδή, romanized : ōdḗ) is a type of lyric poetry, with its origins in Ancient Greece. Odes are elaborately structured poems praising or glorifying an event or individual, describing nature intellectually as well as emotionally. A classic ode is structured in three major parts: the strophe, the antistrophe, and ...
e. In mathematics, an ordinary differential equation ( ODE) is a differential equation (DE) dependent on only a single independent variable. As with other DE, its unknown (s) consists of one (or more) function (s) and involves the derivatives of those functions. [1] The term "ordinary" is used in contrast with partial differential equations ...
The Symphony No. 9 in D minor, Op. 125, is a choral symphony, the final complete symphony by Ludwig van Beethoven, composed between 1822 and 1824. It was first performed in Vienna on 7 May 1824. The symphony is regarded by many critics and musicologists as a masterpiece of Western classical music and one of the supreme achievements in the ...
Alan Wilder came up with the title, noting that it was the 101st and final performance of the tour. [citation needed] On 7 September 1988, Depeche Mode performed "Strangelove" at the 1988 MTV Video Music Awards at the Universal Amphitheatre in Los Angeles. Violator (1989–1990)