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math.FA2003
On the Determinant of a Certain Wiener-Hopf + Hankel Operator
Estelle L. Basor, Torsten Ehrhardt, Harold Widom
We establish an asymptotic formula for determinants of truncated Wiener-Hopf+Hankel operators with symbol equal to the exponential of a constant times the characteristic function o…
math-ph2003
The X-ray problem revisited
Estelle L. Basor, Yang Chen
In this letter we re-visit the X-ray problem. Assuming point interaction between the conduction electrons and the first instantaneously created core-hole, the latter's Green's func…