He next devoted himself to medicine, but his natural inclination proved too strong for him, and within a year he resolved to give his whole time to mathematics. Prove definition is - to establish the existence, truth, or validity of (as by evidence or logic). They do not represent the opinions of YourDictionary.com. The campaign of 1771, which opened with a gleam of success in the capture of Giurgevo, proved yet more disastrous to the Turks, the Russians passing the Danube and completing the conquest of the Crimea. But Boleslaus's first Bohemian war proved unsuccessful, and was terminated by the marriage of his sister Swatawa with the Czech king Wratyslaus II. Sefstrom definitely proved the existence of a metallic element vanadium, which had been previously detected (in 1801) in certain lead ores by A. Schneider and others, have proved the existence of " colloidal silver "; similar forms of the metals gold, copper, and of the platinum metals have been described. Alex wouldn't approve, but it was her land and her phone. Now if n be any finite cardinal number, it can be proved that the class of those serial relations, which have a field whose cardinal number is n, is a relation-number. In diplomacy he proved fully the equal of all - white or black - with whom he had to deal, while he ruled with a rare combination of vigour and moderation over the nation which he had created. It can be proved by geometry that (aA-H3B) +yC = aA+(aB+- y C) = (a + 1 3+ 7) P, where P is in fact the centroid of masses a, 13, y placed at A, B, C respectively. But nothing has yet been proved from these facts as to the effect "futures" are having upon the steadiness of prices. The Lateran council of 1139 restored peace to the Church, excommunicating Roger of Sicily, against whom Innocent undertook an expedition which proved unsuccessful. This, after long and serious labour, he effected; the dog thus inoculated proved to be immune when bitten by a rabid animal. Another place which proved attractive to colonists of that race was the curious narrow strip of ground, called the Thracian Chersonese, that intervened between the Hellespont and the Bay of Melas, which penetrates far into the land on its northern side. The chief concern of the Natal government was to remodel their native policy where it proved inadequate, especially in view of the growth of the movement for the federation of the South African colonies. 178+65 sentence examples: 1. Dodgson periodically published mathematical works - An Elementary Treatise on Determinants (1867); Euclid, Book V., proved Algebraically (1874); Euclid and his Modern Rivals (1879), the work on which his reputation as a mathematician largely rests; and Curiosa Mathematica (1888). The work of Marco Polo is the most valuable narrative of travels that appeared during the middle ages, and despite a cold reception and many denials of the accuracy of the record, its substantial truthfulness has been abundantly proved. In November 1580 Ivan in a fit of ungovernable fury at some contradiction or reproach, struck his eldest surviving son Ivan, a prince of rare promise, whom he passionately loved, a blow which proved fatal. Newcomb: "At the present time we can only say that the nebular hypothesis is indicated by the general tendencies of the laws of nature, that it has not been proved to be inconsistent with any fact, that it is almost a necessary consequence of the only theory by which we can account for the origin and conservation of the sun's heat, but that it rests on the assumption that this conservation is to be explained by the laws of nature as we now see them in operation.