Isaac Joachim Schwatt

1867

• An introduction to the operations with series
• A geometrical treatment of curves which are isogonal conjugate to a straight line with respect to a triangle
• Elements of the theory of functions of a complex variable
• An introduction to the operations with series
• Certain expansion involving the Bernoulli numbers
• Expressions for the Euler numbers obtained by expanding sec x by means of Maclaurins Theorem
• Methods for the summation of certain families of series
• The sum of the powers of a series of numbers forming an arithmetical progression and the Bernoulli numbers
• The summation of a general type of Fourier's Series