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Статья

Asymptotics of determinants of 4-th order operators at zero

Mathematische Nachrichten. 2020. Vol. 293. P. 210-225.
Переводчик: A. Badanin.

We consider fourth order ordinary differential operators on the half-line and on the
line, where the perturbation has compactly supported coefficients. The Fredholm
determinant for this operator is an analytic function in the whole complex plane without
zero.We describe the determinant at zero.We show that in the generic case it has
a pole of order 4 in the case of the line and of order 1 in the case of the half-line.