6 citations · 12 across the 8 of their papers we have counts for
8 papers
An Astronomical Interpretation of the Nebra Sky Disc
Bernd Fiedler
We agree with the interpretation of W. Schlosser, that the Nebra Sky Disc is a reminder of a method of determining a start date (and possibly also an end date) of the farming year.…
Self-adjoint symmetry operators connected with the magnetic Heisenberg ring
Bernd Fiedler
We consider symmetry operators a from the group ring C[S_N] which act on the Hilbert space H of the 1D spin-1/2 Heisenberg magnetic ring with N sites. We investigate such symmetry…
Symmetry classes connected with the magnetic Heisenberg ring
Bernd Fiedler
We define symmetry classes and commutation symmetries in the Hilbert space H of the 1D spin-1/2 Heisenberg magnetic ring with N sites and investigate them by means of tools from th…
Stationary or static space-times and Young tableaux
Bernd Fiedler
Algebraic curvature tensors possess generators which can be formed from symmetric or alternating tensors S, A or tensors θwith an irreducible (2,1)-symmetry. In differential geomet…
Methods for the construction of generators of algebraic curvature tensors
Bernd Fiedler
We demonstrate the use of several tools from Algebraic Combinatorics such as Young tableaux, symmetry operators, the Littlewood-Richardson rule and discrete Fourier transforms of s…
Generators of algebraic curvature tensors based on a (2,1)-symmetry
Bernd Fiedler
We consider generators of algebraic curvature tensors R which can be constructed by a Young symmetrization of product tensors U*w or w*U, where U and w are covariant tensors of ord…