Browsing by Author "Iftimie, Viorel"

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    • Commutator Criteria for Magnetic Pseudodifferential Operators 
      Iftimie, Viorel; Mǎntoiu, Marius; Purice, Radu (2009-03-12)
      The gauge covariant magnetic Weyl calculus has been introduced and studied in previous works. We prove criteria in terms of commutators for operators to be magnetic pseudodifferential operators of suitable symbol classes. ...
    • Estimating the number of negative eigenvalues of a relativistic Hamiltonian with regular magnetic field 
      Iftimie, Viorel; Mantoiu, Marius; Purice, Radu (Institute of Mathematics ``Simion Stoilow'' of the Romanian Academy, 2008-01-02)
      We prove the analog of the Cwickel-Lieb-Rosenblum estimation for the number of negative eigenvalues of a relativistic Hamiltonian with magnetic field B 2 C1 pol(Rd) and an electric potential V 2 L1 loc(Rd), V− 2 ...