These older Neujahrsgaben are available:
Emil du Bois-Reymond
Über Geschichte der Wissenschaft
Neujahrsgabe 1989
Du Bois-Reymond's speech of 1872 treats the
significance of the history of science.
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This title is available as a PDF file:
Johannes Kepler
De coni sectionibus / Über die Kegelschnitte
Latin and German
Edited and translated by Thomas Dittert
Neujahrsgabe 1990
62 pages, paper binding, thread stitching • 12,00 €
ISBN 978-3-927423-90-9
Kepler was the first mathematician to discuss the hyperbola, the parabola, the ellipse, and the circle as curves transforming continuously from one into another.
„Kepler's invention of points at infinity made it possible to regard the projective plane as the affine plane plus the line at infinity." H.S.M. Coxeter
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The series of Neujahrsgaben will be continued in the future (from New Year 2026 on).
