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Search name	Searched On	Run search
Keyword: Lie Commutators (1)	28 Mar 2025	Run
Keyword: Symbolicc++ (2)	28 Mar 2025	Run
Keyword: Unicyclic Graph (21)	28 Mar 2025	Run
Keyword: Point Of Impact (1)	28 Mar 2025	Run
Keyword: Dissipativeness (1)	28 Mar 2025	Run

articleNo Access
ENERGY EIGENVALUE LEVEL MOTION AND A SYMBOLICC++ IMPLEMENTATION
- WILLI-HANS STEEB and
- YORICK HARDY
International Journal of Modern Physics C01 Oct 2000
Preview Abstract
We consider the Hamilton operator . We assume that has a discrete spectrum. We show that the energy eigenvalues and eigenvectors obey an autonomous system of ordinary differential equations. An implementation of this system of differential equations is given using SymbolicC++.
articleNo Access
FERMI SYSTEMS, HUBBARD MODEL AND A SYMBOLICC++ IMPLEMENTATION
- YORICK HARDY and
- WILLI-HANS STEEB
International Journal of Modern Physics C01 Feb 2001
Preview Abstract
We show how the anticommutation relations for Fermi operators can be implemented with computer algebra using SymbolicC++. We describe applications to the Hubbard model. An important identity for Fermi operators is proved. Then, we test for higher order constants of motion for the Hubbard model. Finally, the matrix representation for the four point Hubbard model is calculated.

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