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most citedThe Widom-Sobolev formula for discontinuous matrix-valued symbols

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math.SP2025

An enhanced term in the Szegő-type asymptotics for the free massless Dirac operator

Leon Bollmann

We consider a regularised Fermi projection of the Hamiltonian of the massless Dirac equation at Fermi energy zero. The matrix-valued symbol of the resulting operator is discontinuo…