# An Etymological Dictionary of Astronomy and AstrophysicsEnglish-French-Persian

## فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

### M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 6 Search : operation
 binary operation   آپارش ِ درین   âpâreš-e dorinFr.: opération binaire   A mathematical operation that combines two numbers, quantities, sets, etc., to give a third. For example, multiplication of two numbers is a binary operation. A binary operation * on a set S is → commutative if a * b = b * a for all a, b∈ S. A binary operation * on a set S is → associative if (a * b) * c = a * (b * c) for all a, b, c∈ S.→ binary; → operation. operation   آپارش   âpârešFr.: opération   1) General: An act or instance, process, or manner of functioning or operating. 2a) Math.: A mathematical process, as addition, multiplication, or differentiation. 2b) The action of applying a mathematical process to a quantity or quantities. 3) Computers: An action resulting from a single instruction.Verbal noun of → operate operational   آپارشی   âpârešiFr.: opérationnel   Pertaining to a process or series of actions for achieving a result.Adj. of → operation. operational calculus   افماریکِ آپارشی   afmârik-e âpârešiFr.: calcul opérationnel   A method of mathematical analysis which in many cases makes it possible to reduce the study of differential operators, pseudo-differential operators and certain types of integral operators, and the solution of equations containing them, to an examination of simpler algebraic problems. It is also known as operational analysis.→ operational; → calculus. operationalism   آپارش‌باوری   âpârešbâvariFr.: opérationalisme   In the philosophy of science, the view that → concepts are defined in terms of measuring operations which determine their applicability. Same as operationism.→ operation; → -ism. real-time operation   آپارش در زمان ِ هسیا   âpâreš dar zamân-e hasyâFr.: opération en temps réel   The operation of a computer during the actual time that the related physical processes take place so that the results can be used to guide the physical processes.→ real; → time; → operation.