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・ Positive psychotherapy
・ Positive Reaction
・ Positive Reaction (album)
・ Positech Games
・ Positif
・ Positif (album)
・ Positif (magazine)
・ POSITIF (project)
・ Positio
・ Position
・ Position (finance)
・ Position (music)
・ Position (obstetrics)
・ Position (poker)
・ Position (team sports)
Position (vector)
・ Position Among the Stars
・ Position analysis questionnaire
・ Position and momentum space
・ Position angle
・ Position circle
・ Position Correction
・ Position effect
・ Position error
・ Position fixing
・ Position Ignition
・ Position line
・ Position of Lebanon in the 2006 Lebanon War
・ Position of the arms in ballet
・ Position of the media on the Armenian Genocide


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Position (vector) : ウィキペディア英語版
Position (vector)
In geometry, a position or position vector, also known as location vector or radius vector, is a Euclidean vector that represents the position of a point ''P'' in space in relation to an arbitrary reference origin ''O''. Usually denoted x, r, or s, it corresponds to the straight-line distance from ''O'' to ''P'':
:\bold=\overrightarrow.
The term "position vector" is used mostly in the fields of differential geometry, mechanics and occasionally in vector calculus.
Frequently this is used in two-dimensional or three-dimensional space, but can be easily generalized to Euclidean spaces in any number of dimensions.〔Keller, F. J, Gettys, W. E. et al. (1993), p 28–29〕
==Definition==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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