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Bessel-type operators and a refinement of Hardy’s inequality. (English) Zbl 07456826

Gesztesy, Fritz (ed.) et al., From operator theory to orthogonal polynomials, combinatorics, and number theory. A volume in honor of Lance Littlejohn’s 70th birthday. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 285, 143-172 (2021).
MSC:  47-XX 33-XX
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Critical magnetic field for 2D magnetic Dirac-Coulomb operators and Hardy inequalities. (English) Zbl 1480.81044

Exner, Pavel (ed.) et al., Partial differential equations, spectral theory, and mathematical physics. The Ari Laptev anniversary volume. Berlin: European Mathematical Society (EMS). EMS Ser. Congr. Rep., 41-63 (2021).
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A non-existence result for a generalized radial Brezis-Nirenberg problem. (English) Zbl 1480.35204

Exner, Pavel (ed.) et al., Partial differential equations, spectral theory, and mathematical physics. The Ari Laptev anniversary volume. Berlin: European Mathematical Society (EMS). EMS Ser. Congr. Rep., 1-15 (2021).
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Extinction in a finite time for parabolic equations of fast diffusion type on manifolds. (English) Zbl 1478.35026

Kusraev, Anatoly G. (ed.) et al., Operator theory and differential equations. Selected papers based on the presentations at the 15th conference on order analysis and related problems of mathematical modeling, Vladikavkaz, Russia, July 15–20, 2019. Cham: Birkhäuser. Trends Math., 1-6 (2021).
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