Several mathematicians, including Maclaurin and d ' Alembert, attempted to prove the soundness of using limits, but it would be 150 years later, through the work of Augustin Louis Cauchy and Karl Weierstrass, where a means was finally found to avoid mere " notions " of infinitely small quantities, that the foundations of differential and integral calculus were made firm.

Several teams of mathematicians have verified that Perelman's proof is correct.

Several later mathematicians complained about his imprecise use of probability and the unsupported derivation of his formula.

Several mathematicians have demonstrated workable procedures based on a variety of approximations.

Several mathematicians who have made contributions to the development of mathematics have hailed from the country of Wales.

Several of Loew's pupils at Posen became scientific celebrities, the most notable being the philosopher Kuno Fischer ( 1824 – 1907 ) and the mathematicians Leo Konigsberge ( 1837 – 1921 ) and Lazarus Immanuel Fuchs ( 1835 – 1902 ).

Several Central Committee members, who were members of the Workers Opposition, offered their resignation to Lenin but their resignations were not accepted, and they were instead asked to submit to party discipline.

Several such theories have been proposed, but none is currently universally accepted.

Several other paintings, such as Veneto's fanciful portrait, have also been said to depict her but none has been accepted by scholars at present.

Several have issued coins, flags, postage stamps, passports, medals, and other items, which are rarely accepted outside of their own community.

Several communities accepted and the government, in partnership with the state, bought 25, 000 properties which they converted into wetlands.

Several historians have accepted the figure of 6, 000 Genoese mercenary crossbowmen.

Several of these remotes may need to be used sequentially but, as there are no accepted interface guidelines, the process is increasingly cumbersome.

Several weeks later, however, Pilgrim's Pride accepted an $ 80 million offer from Foster Farms of California to purchase the operations.

Several weeks later, however, Pilgrim's Pride accepted an $ 80 million offer from Foster Farms of California to purchase the operations.

Several weeks later, however, Pilgrim's Pride accepted an $ 80 million offer from Foster Farms of California to purchase the operations.

Several councils were held, confutations were published, ex-communications were pronounced, ambiguous explanations were by turns accepted and refused, treaties were concluded and violated.

Several days later, Jimmy Chamberlin accepted Billy Corgan's offer for a reunion.

Several historians have argued that Lamarck's name is linked somewhat unfairly to the theory that has come to bear his name, and that Lamarck deserves credit for being an influential early proponent of the concept of biological evolution, far more than for the mechanism of evolution, in which he simply followed the accepted wisdom of his time.

Several self-propelled guns, the IT-28 bridging tank, and an engineering vehicle with mine rollers were tested on the T-28 tank chassis, but none was accepted for production.

Several generally accepted tenets have emerged:

Several species of Anolis are occasionally ascribed to the genus Norops, but the validity of the Norops genus is not widely accepted.

Several weeks later Cameron returned to Scotland where in the meantime a Third Indulgence had been granted and accepted by a vote in the General Assembly.

Several universities were eager to obtain his services, and he had accepted a post offered him by the elector palatine at Heidelberg, when he died suddenly.

Several leading Peelites ( including Gladstone, Herbert, Cardwell, and Newcastle, but notably not Graham, who was one of the driving forces behind the coalition ) accepted cabinet posts in this ministry, though some Peelites became independents or returned to the Conservatives.

Several expressed interest and about three accepted it, but they could not convince their sales staff that it was marketable.

Several subspecies have been described and about four or five are widely accepted ( the race poikila is invalid and refers to Aegolius funereus A. b. fryi of southern India described by Stuart Baker and A. b. mayri described by Deignan from northern Thailand are not usually recognized .).

Several of their preachers, including John Brainerd, accepted military positions and urged Presbyterians to enlist in the army.

Several of Ibadism's founding figures – in particular Jabir ibn Zayd – were noted for their hadith research, and Jabir ibn Zayd is accepted as a reliable narrator by Sunni scholars as well as by Ibadi ones.

Several sports and events adopted cricket's Ashes " concept " and by the beginning of the 20th century it was an " accepted principle " that a series had to have at least three matches to be a true test of which side was the best.

Several factors contributed to the success of Keating ’ s second challenge in December 1991.

Several German princes abandoned the Catholic Church and formed the Schmalkaldic League in order to challenge Charles ' authority with military force.

Several events fueled suspicion and distrust between the western powers and the Soviet Union: the Bolsheviks ' challenge to capitalism ; the Polish – Soviet War ; the 1926 Soviet funding of a British general workers strike causing Britain to break relations with the Soviet Union ; Stalin's 1927 declaration that peaceful coexistence with " the capitalist countries.

Several unaddressed envelopes are to be found with similar combinations of Portuguese India and Union of India stamps in this time frame, the challenge being to obtain a postmark from each of the different days.

Several U. S. states, including California, Georgia, and Texas impose a " tender " condition precedent upon borrowers seeking to challenge a wrongful foreclosure, which is rooted in the maxim of equity that " he who seeks equity must first do equity ," as well as the common law rule that the party seeking rescission of a contract must first return all benefits received under the contract.

Several wrestlers charged the ring in response to the challenge, including the 3Live Kru ( Ron Killings, Konnan, and B. G.

Several R / C companies rose to the challenge, especially four Southern California companies: MRP, Pro-Line, Thorp Corporation and Robinson Racing.

Several horses attempted to challenge, with the filly Egyptband looking the biggest threat to the leader, but Sinndar stayed on to win by one and a half lengths.

Several of Scratch ’ s most exciting scenes involve artists playing with one another: Mix Master Mike ( perhaps most famous for his work with the Beastie Boys, and also a member of Invisibl Skratch Piklz ) and the popular Filipino DJ Qbert ( also of Invisibl Skratch Piklz ); Shadow and Cut Chemist working with Steinski ; and Jurassic 5 on stage with Cut Chemist and DJ Nu-Mark ( who says of working with these pioneering MCs, " It's fun, but it's always a challenge ").

Several complex fault systems add to the challenge for geology students to unravel the area's history.

Several teams chose to combat Kinkladze's playmaking skill with robust tackles ; in one such match on 11 January 1997, against Crystal Palace, Kinkladze had to be stretchered off following a challenge by David Hopkin.

Several stories tell of his ambitious plans and indirect challenge to Qianlong.

Several areligious scientists told me privately that they did not want to challenge the beliefs of religious speakers for fear of offending them and the Templeton hosts.

Several factors challenge the spread of camelina cultivation in Canada: it does not have government crop classification, and camelina meal is not approved as livestock feed.

Several different modes of play are available and include Tour ( full season of tournaments ), Tournament ( plug and play instant action mode ), VS Mode ( challenge golfers to unlock new characters / costumes ) and Training ( in game tutorial mode ).

Several other options also strangely missing, such as SOLO ( arrow ) and challenge difficulty.

Several years later, SMASH is faced with a new challenge when former SMASH member Captain Future returns.

Several rounds of efforts to liven up City Hall Plaza have yielded only minimal changes, with the challenge being, in part, the numerous approvals required at the city, state and federal level.

Several great matches took place, particularly the challenge by Kent to take on All-England at the Artillery Ground on Monday 18 June.