Théorie et applications des équipollences, par C. A. Laisant.

Ji 6 SECONDE PARTIE. - CHAPITRE III. Posons comme ci-dessus BA'= aBC, CB'= P CA, AC'=y AB; soient, en outre, AM = xAA', AN = uAA', BN = yBB', BL = vBB', CL = zCC', CM = wCC'. Fig. 37. A N B A' L'equipollence AB + BN = AN nous donne AB -4-y(BC + pCA) = u(AB - aBC) ou ( —y)AB (I-P)y AC = (i — AB -- aJ iAC. De la, en yjoignant les relations symetriques, (I —a)u=i-y, (I- )V -- I-Z, (I -- )V = I - X, XU = (I - ( )Y P, = (I- Y)Z, Y W = (I — a)x. Ces formules donnent tres aisement z - v+ w 3- (cx ~- py -4- az), x y+4 = a(u 4-ix)+- (v- y)+- (w4- z), 2(u 4- - w) + (x - y -1- z) = 6 + (u - x)+ p(- ( — y)+ -- 7(w -- ).

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Title
Théorie et applications des équipollences, par C. A. Laisant.
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Laisant, C.-A. (Charles-Ange), 1841-1920.
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Paris,: Gauthier-Villars,
1887.
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"Théorie et applications des équipollences, par C. A. Laisant." In the digital collection University of Michigan Historical Math Collection. https://name.umdl.umich.edu/abn7895.0001.001. University of Michigan Library Digital Collections. Accessed June 14, 2025.
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