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[11] [12] The company operates stores dedicated to selling college textbooks, both on and off campus. [ 13 ] In June 2016, Barnes & Noble Education completed the acquisition of Promoversity, a custom merchandise supplier and e-commerce business that works with the collegiate bookstore business and its customers.
In August 2010, concurrently with introducing a web-based textbook rental service, Barnes and Noble—"one of the largest textbook retailers in the US" [59] —introduced the NOOK Study app "for the PC or Mac that lets users buy or rent e-book versions of their textbooks for use on the computer. [60]
Comic book drawings: Guido Crepax with Histoire d'O (1975), Justine (1979) and Venere in Pelliccia (1984); inspired by the work of Pauline Réage, the Marquis de Sade and Leopold von Sacher-Masoch. John Willie and The Adventures of Sweet Gwendoline (1984) which was the basis for the film The Perils of Gwendoline in the Land of the Yik-Yak .
A different technique, which goes back to Laplace (1812), [3] is the following. Let = =. Since the limits on s as y → ±∞ depend on the sign of x, it simplifies the calculation to use the fact that e −x 2 is an even function, and, therefore, the integral over all real numbers is just twice the integral from zero to infinity.
Fermat's Last Theorem considers solutions to the Fermat equation: a n + b n = c n with positive integers a, b, and c and an integer n greater than 2. There are several generalizations of the Fermat equation to more general equations that allow the exponent n to be a negative integer or rational, or to consider three different exponents.
The approximation ( +) and its equivalent form + ( + ( +)) can be obtained by rearranging Stirling's extended formula and observing a coincidence between the resultant power series and the Taylor series expansion of the hyperbolic sine function.
Exponential functions with bases 2 and 1/2. In mathematics, the exponential function is the unique real function which maps zero to one and has a derivative equal to its value. . The exponential of a variable is denoted or , with the two notations used interchangeab
The Basel problem is a problem in mathematical analysis with relevance to number theory, concerning an infinite sum of inverse squares.It was first posed by Pietro Mengoli in 1650 and solved by Leonhard Euler in 1734, [1] and read on 5 December 1735 in The Saint Petersburg Academy of Sciences. [2]