# Stability of order and type under perturbation of the spectral measure

@article{Baranov2019StabilityOO, title={Stability of order and type under perturbation of the spectral measure}, author={A. D. Baranov and Harald Woracek}, journal={Revista Matem{\'a}tica Iberoamericana}, year={2019} }

t is known that the type of a measure is stable under perturbations consisting of exponentially small redistribution of mass and exponentially small additive summands. This fact can be seen as stability of de~Branges chains in the corresponding L2-spaces.

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