Home About us Products Services Contact us Bookmark
:: wikimiki.org ::
Бинарная операция

Бинарная операция

Бина́рной опера́цией или двуме́стной опера́цией на множестве M называется отображение M\times M \to M, которое каждым двум элементам множества M, называемых операндами, ставит в соответствие некоторый элемент того же множества, называемый результатом. Бинарную операцию принято обозначать знаком действия, который ставится между операндами. Например, для бинарной операции «\cdot» результат её применения к двум элементам x\,\! и y\,\! записывается в виде x\cdot y. Бинарная операция «\cdot» называется коммутативной, если её результат не зависит от перестановки операндов, т. е. x\cdot y = y\cdot x для любых x,y\in M. Бинарная операция «\cdot» называется ассоциативной, если (x\cdot y)\cdot z = x\cdot (y\cdot z) для любых x,y,z\in M. Для ассоциативной операции «\cdot» результат вычисления x_1\cdot x_2 \cdot\dots\cdot x_n не зависит от порядка вычисления (расстановки скобок), и потому позволяется опускать скобки в записи. Для неассоциативной операции выражение x_1\cdot x_2 \cdot\dots\cdot x_n при n>2\,\! не определено. Примерами бинарных операций могут служить сложение, умножение и вычитание чисел. Причём сложение и умножение чисел являются коммутативными и ассоциативными операциями, а вычитание — нет.

См. также


- арность
- унарная операция
- тернарная операция Category:Абстрактная алгебра ja:二項演算

Nøklebåndfamilien

Nøkleblomfamilien eller nøklebåndfamilien (Primulaceae) er en plantefamilie i ordenen Ericales. Den omfatter ca. 1000 arter fordelt på 20 planteslekter. Ca. 14 arter vokser i Norge, og mest kjent er marianøkleblom (Primula veris).

Kjente slekter


- Anagallis
- Androsace
- Cyclamen
- Glaux
- Hottonia
- Fredløs (Lysimachia)
- Primula
- Trientalis ja:サクラソウ科

House sylwester rozstpy Szkolenia bhp Granada accommodation










































:: RELATED NEWS ::
Unterseeboot 262
Unterseeboot 262 (U-262) was a Type VIIC submarine of the Kriegsmarine. Laid down on 29 May, 1941 at Bremer Vulkan, Bremen-Vegesack, Commissioned on 15 Apr, 1942 Kptlt. Günther Schiebusch

Commanders


- 15 Apr, 1942 - 26 Oct, 1942 Günter Schiebusch
- Sep, 1942 - Oct, 1942 Oblt. Siegfried Atzinger
- 26 Oct, 1942 - 25 Jan, 1944 Kptlt. Heinz Franke (Knights Cross)
- 25 Jan, 1944 - 24 Nov, 1944 Oblt. Helmu
Canada's
Canada is the second largest country in the world in terms of area, extending from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean with claims extending to the North Pole. The northern-most country on the mainland of
Ravens
See text Many large black birds of the genus Corvus are called ravens. Other birds in the same genus are the smaller crows, jackdaws, and rooks. In much of Europe and North America,
Arches
An arch is a curved structure capable of spanning a space while supporting significant weight (e.g. a doorway in a stone wall). The arch was developed in Mesopotamia, Assyria, Egypt and Etruria. It was later refined in Ancient Rome. The arch became an importa
Hungarian Football Federation
The Hungarian Football Federation (MLSZ) (Hungarian: Magyar Labdarúgó Szövetség) is the governing body of football in Hungary. It organizes the football league, Arany Aszok Liga, and the Hungary national football team. It is based in Budapest.

External l
Skeletons
In biology, the skeleton or skeletal system is the biological system providing support in living organisms. (By extension, non-biological outline structures such as gantries or buildings may also acquire skeletons.) Skeletal systems are commonly divided into three types - external (an exoskeleton), internal (an endoskeleton), and fluid based (a 21 September 1998 in Woodland Hills, California) Nikolas is a quadruplet, his siblings are Lorenzo, Zachary and Myrinda Brino. When the quadruplets were a few months old, they were cast as twins Sam & David Camden on 7
Petre S. Aurelian
Petre S. Aurelian (13 December 1833-24 January 1909) was a Romanian politician who served as a Prime Minister of Romania between 2 December 1896 and 12 April 1897. He studied at
Torpedoed
A modern torpedo, historically called a locomotive torpedo, is a self-propelled guided projectile that (after being launched above or below the water surface) operates underwater and is designed to detonate on contact or in proximity to a target. Torpedoes are weapons that may be launched from submarines, surface ships, helicopters and fixed-wing invertebrates, and sometimes to the hairs of the leaves of some insectivorous plants. Usually, they are used for feeding and grasping. Anatomically, they work like other muscular hydrostats.

Tentacles in marine animals

The phylum mollusca includes many species with
All Rights Reserved 2005 wikimiki.org