was explaining to an actuary what was the chance that a certain proportion of some group of people would at the end of a given time be alive; and quoted the actuarial formula, involving p [pi], which, in answer to a question, he explained stood for t...
Foreshadowings of the principles and even of the language of [the infinitesimal] calculus can be found in the writings of , , , , , and . It was 's good luck to come at a time when everything was ripe for the discovery, and his ability enabled him to...
The manner of 's death has a certain interest for psychologists. Shortly before it, he declared that it was necessary for him to sleep some ten minutes or a quarter of an hour longer each day than the preceding one: the day after he had thus reached ...
For other great mathematicians or philosophers, used the epithets magnus, or clarus, or clarissimus; for alone he kept the prefix summus.
, who assisted in revising it [ ] for the press, says that himself was frequently unable to recover the details in the chain of reasoning, and if satisfied that the conclusions were correct, he was content to insert the constantly recurring formula, ...
...and analysis proved to be the first of theoretical astronomers no less than the greatest of 'arithmeticians.
The great masters of modern analysis are , , and , who were contemporaries. It is interesting to note the marked contrast in their styles. is perfect both in form and matter, he is careful to explain his procedure, and though his arguments are genera...
took no exercise, indulged in no amusements, and worked incessantly, often spending eighteen or nineteen hours out of the twenty-four in writing.
