Tools

• Mathematica: You will need Mathematica run the following notebooks. If you don't have Mathematica you can still view the notebooks using Mathreader. Get your free copy here.
• FT series method
  • Schmidt H-J and Bröcker T 2015, Fourier-Taylor series for the figure eight solution of the three body problem
    • FT for anharmonic oscillator, Mathematica(10.1) notebook file
    • FT for generalized Mathieu equation, Mathematica(10.1) notebook file
    • FT for figure eight solution, Mathematica(10.1) notebook file
• spin dimer
  • autocorrelation function of the classical and quantum Heisenberg spin dimer
    • version 1, Mathematica(3.0) notebook file
    • version 2, Mathematica(3.0) notebook file
• Structure and relevant dimension of the Heisenberg model and applications to spin rings
  • Diagonalization of the Hamiltonian in the magnon basis representation
    • eigenvalues and degeneracies, Mathematica(3.0) notebook file
• Planetenbewegung, Keplersche Gesetze
  • Rückläufigkeit der Planetenbewegung im geozentrischen System

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