His style is perfectly **perspicuous**, and its "strong home-touch" compensates for what is lacking in elasticity and grace.

A profound mathematician, Cauchy exercised by his **perspicuous** and rigorous methods a great influence over his contemporaries and successors.

Moritz Cantor has suggested that at one time there existed two schools, one in sympathy with the Greeks, the other with the Hindus; and that, although the writings of the latter were first studied, they were rapidly discarded for the more **perspicuous** Grecian methods, so that, among the later Arabian writers, the Indian methods were practically forgotten and their mathematics became essentially Greek in character.

His treatises and contributions to scientific journals (to the number of 789) contain investigations on the theory of series (where he developed with **perspicuous** skill the notion of convergency), on the theory of numbers and complex quantities, the theory of groups and substitutions, the theory of functions, differential equations and determinants.