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1.
Armin Herzer 《Journal of Geometry》1979,12(2):104-131
Every affine central collineation of a translation plane induces a special collineation of the projective space spanned by the spreadF belonging to . Here the relations between these special collineations of and certain incidence propositions inF are investigated; so new proofs are given for some characterisations of (A,B)-regular spreads included in [7]. 相似文献
2.
Ohne ZusammenfassungAlle Bezeichnungen und Literatur wie dort. 相似文献
3.
4.
A. Herzer 《Archiv der Mathematik》1979,33(1):294-304
Ohne Zusammenfassung 相似文献
5.
It is shown that an affine chain geometry over a Jordan algebra can be constructed in a nearly classical manner. Conversely, such chain geometries are characterized as systems of rational normal curves having a group of automorphisms with certain properties.
Herrn Prof. Dr. Heinz Lüneburg zu seinem 60. Geburtstag 相似文献
6.
Armin Herzer 《Geometriae Dedicata》1972,1(1):47-64
Ohne Zusammenfassung 相似文献
7.
Armin Herzer 《Mathematische Zeitschrift》1979,164(3):215-238
Ohne Zusammenfassung 相似文献
8.
Armin Herzer 《Journal of Geometry》1979,13(1):26-30
This is the proof of a theorem which states a relation between some regularity conditions for spreads. 相似文献
9.
The soft magnetic properties and the domain patterns of optimized nanocrystalline FeCuNbSiB-alloys are typically comparable to those of highly permeable Co-based amorphous alloys. Yet the nanocrystalline alloys show some specific peculiarities absent in the amorphous case. The most prominent example is patchy magnetization patterns which reflect the residual contribution of the averaged random magneto-crystalline anisotropy to the magnetization process. The article surveys the typical characteristics and the consequences for the magnetization process. 相似文献
10.
T. Graf G. Hampel J. Korus M. Fricke J. Hesse G. Herzer S. Chatzibasiliou J. Tsoukalas 《Hyperfine Interactions》1994,94(1):2207-2211
Depending on different Nb and Cu concentration, we studied the formation of nano- and microcrystalline phases in differently annealed samples of FeCuNbSiB. First, the kinetics of crystallization was explored by measuring the temperature-dependent electrical resistivity and magnetization. After this, we collected Mössbauer spectra and did an X-ray diffraction analysis of annealed samples at chosen temperatures to discover the different crystalline phases. It was found how the onset of crystallization had been shifted towards other temperatures. The analysis of Mössbauer spectra shows that building up the well-known DO3 structure of Fe3Si is disturbed in the alloy without Cu. At higher Nb content, we resolve two different crystallization steps in the formation of Fe3Si and a new crystalline phase, probably being a structure like Fe23B6. 相似文献