Argand diagram

Math.a Cartesian coordinate system consisting of two perpendicular axes for graphing complex numbers, the real part of a number being plotted along the horizontal axis and the imaginary part along the vertical axis. Cf. imaginary axis, real axis.[190510; named after JeanRobert Argand (17681822), Swiss mathematician]
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graphic portrayal of complex numbers (complex number), those of the form x + yi, in which x and y are real numbers (real number) and i is the square root of −1. It was devised by the Swiss mathematician Jean Robert Argand about 1806. A similar representation had been proposed by the Danish surveyor Caspar Wessel in 1797, but this was not generally known until later. One axis represents the pure imaginary numbers (those consisting of the yi portion only); the second represents the real numbers (xvalues only). This permits the complex numbers to be plotted as points in the plane defined by the two axes, as shown in the figure—>.* * *
Universalium. 2010.
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argand diagram — noun Usage: usually capitalized A Etymology: after Jean Robert Argand died 1825 French mathematician : a conventional diagram or graph in which the complex number x + iy is represented by the point whose rectangular coordinates are x and y … Useful english dictionary
Argand diagram — noun Etymology: Jean Robert Argand died 1825 Swiss mathematician Date: 1908 a system of rectangular coordinates in which the complex number x + iy is represented by the point whose coordinates are x and y … New Collegiate Dictionary
Argand diagram — [ α:gənd] noun Mathematics a graph on which complex numbers can be represented, the horizontal coordinate representing the real part of the number and the vertical coordinate the imaginary participle Origin early 20th cent.: named after the… … English new terms dictionary
Argand diagram — /ˈagænd ˌdaɪəgræm/ (say ahgand .duyuhgram) noun Mathematics 1. a plane geometrical representation of the complex number z=x+iy, the point having rectangular coordinates (x, y). 2. a graph or figure obtained by the above method expressing some… … Australian English dictionary
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