

Seminar on the History of Mathematics
June 6, 2019 18:00, St. Peterburg






On Gregory’s coefficients
Ià. V. Blagouchine^{} 
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Abstract:
Gregory coefficients are decreasing rational numbers 1/2, 1/12, 1/24, 19/720, ..., which are similar in their role to the Bernoulli numbers and appear in a large number of problems, especially in those related to the numerical analysis and to the number theory. They first appeared in the works of the Scottish mathematician James Gregory in 1671 and were subsequently rediscovered many times. Among the famous mathematicians who rediscovered them, we find Laplace, Mascheroni, Fontana, Bessel, Clausen, Hermite, Pearson and Fisher. Furthermore, Gregory's coefficients can rightly be considered one of the most frequently rediscovered in mathematics (the last rediscovery dates back
to our century), the reason for which in literature we can find them
under various names (e.g. reciprocal logarithmic numbers, Bernoulli
numbers of the second kind, δBernoulli numbers, Cauchy numbers, etc.).
For the same reason, their authorship is often attributed to various mathematicians. In this talk, we will discuss the history of these
coefficients, their discovery and subsequent rediscoveries, as well as
their role in some interesting mathematical problems.

