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math-ph2003
Quasiperiodic packings of G-clusters and Baake-Moody sets
Nicolae Cotfas
The diffraction pattern of a quasicrystal admits as symmetry group a finite group G, and there exists a G-cluster C (a union of orbits of G) such that the quasicrystal can be regar…
quant-ph2003
Special functions, raising and lowering operators
Nicolae Cotfas
The Schrodinger equations which are exactly solvable in terms of associated special functions are directly related to some self-adjoint operators defined in the theory of hypergeom…