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Riemann-Hilbert problems, Toeplitz operators. and ergosurfaces. M. Cristina Câmara and Gabriel Lopes Cardoso. ... The previous results can be reformulated in terms of Toeplitz operators as follows.

20 Nov 2023: For A , where is an appropriate domain of operators, we define theproblem functions. ... Given the different domains, we can now state the main theorem for bounded operators.

17 Mar 2010: Widom, Two remarks on spectral approximations forWiener–Hopf operators. J. Integral Equations Appl. ... P. Nørsett, The computation of the spectra ofhighly oscillatory Fredholm integral operators.

2 Nov 2018: 2011), ‘The computation of the spectra of highly. oscillatory Fredholm integral operators’, J.

17 Jun 2019: eiu2du =. πeiπ/4.]. Part II 2002. 26. A3/17 Mathematical Methods. (i) State the Fredholm alternative for Fredholm integral equations of the second kind.

AN OVERVIEW OF PERIODIC ELLIPTIC OPERATORS 15. Figure 9. Lattices and fundamental domains (shaded). ... differential operators (ΨDOs) (see [171] and [261]). 4. Floquet transform and direct integral decomposition.

1 Feb 2023: with prescribed zero Fourier modes. Chapter 99 discusses inversion formulas up to a Fredholm error and the. ... The theory of pseudodifferential operators (i.e. microlocal anal-ysis) then immediately yields that the singularities of f are uniquely.

15 Jun 2020: The new lower bounds demonstrate that the finite section method for compact operators isoptimal. ... Remark 2.5 (The solutions to the computational spectral problem for Schrödinger operators).

17 Jun 2019: ii) The Lie algebra su(2) of generators of SU(2) is spanned by the operators{J+,J,J3} satisfying the commutator algebra [J+,J] = 2J3 and [J3,J] = J.

22 Oct 2016: We then discuss compact operators and show thatthe spectrum can be computed using algorithms with index 1. ... We omitthe details. This gives us the obvious corollary for operators on finite dimensional Hilbert spaces.