für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

All sets of lines providing a partition of the set of internal points to a conic C in PG(2, q), q odd, are determined. There exist only three such linesets up to projectivities, namely the set of all nontangent lines to C through an external point to C, the set of all nontangent lines to C through a point in C, and, for square q, the set of all nontangent lines to C belonging to a Baer subplane...

Authors/Task Force Members: Alec Vahanian (Chairperson) (France)*, Ottavio Alfieri (Chairperson)* (Italy), Felicita Andreotti (Italy), Manuel J. Antunes (Portugal), Gonzalo Barón-Esquivias (Spain), Helmut Baumgartner (Germany), Michael Andrew Borger (Germany), Thierry P. Carrel (Switzerland), Michele De Bonis (Italy), Arturo Evangelista (Spain), Volkmar Falk (Switzerland), Bernard Iung (France)...

Zaslavsky conjectures that the bounded complex of a simple hyperplane arrangement is homeomorphic to a ball. We prove this conjecture for the more general uniform affine oriented matroids.

We construct minimal blocking sets with respect to generators on the Hermitian surfaces H(n, q) when n and q are both odd. A blocking set arises from q + 1 quadrics in PG(n, q) whose polarities commute with a unitary polarity, constructed from the union of Baer sub-quadrics with the common intersections deleted.

Galois theory translates questions about fields into questions about groups. The fundamental theorem of Galois theory states that there is a bijection between the intermediate fields of a field extension and the subgroups of the corresponding Galois group. After a basic introduction to category and Galois theory, this project recasts the fundamental theorem of Galois theory using categorical la...

Además de una introducción dedicada a la figura Bleherís y los orígenes leyenda Tristán, el artículo contiene traducción varios episodios del Tristan Thomas, que son comentados por autores. Los en cuestión se refieren al desenlace obra: Tristán herido, Kaherdín, Kaherdín Inglaterra, La tempestad, Muerte Iseo, Despedida Thomas. El trabajo cierra con unas conclusiones sobre las características es...

This is a major contribution to the expanding field of the history of alternative medicine in Germany. Martin Dinges, historian and archivist of the Homeopathy Archives of the Robert Bosch Institute for the History of Medicine, demands a new approach towards the history of homeopathy in order to overcome the traditional interest, which concentrated mainly on Samuel Hahnemann and the effect of c...