A survey of results of St.Petersburg State University research school on nonlinear partial differential equations I

Authors

  • Darya E. Apushkinskaya RUDN University, 6, ul. Miklukho-Maklaya, Moscow, 117198, Russian Federation; St. Petersburg Department of Steklov Mathematical Institute of the Russian Academy of Sciences (POMI RAS), 27, nab. r. Fontanki, St. Petersburg, 191023, Russian Federation
  • Arina A. Arkhipova St. Petersburg State University, 7-9, Universitetskaya nab., St. Petersburg, 199034, Russian Federation
  • Alexander I. Nazarov St. Petersburg Department of Steklov Mathematical Institute of the Russian Academy of Sciences (POMI RAS), 27, nab. r. Fontanki, St. Petersburg, 191023, Russian Federation; St. Petersburg State University, 7-9, Universitetskaya nab., St. Petersburg, 199034, Russian Federation
  • Victor G. Osmolovskii St. Petersburg State University, 7-9, Universitetskaya nab., St. Petersburg, 199034, Russian Federation https://orcid.org/0000-0003-0591-3741
  • Nina N. Uraltseva St. Petersburg State University, 7-9, Universitetskaya nab., St. Petersburg, 199034, Russian Federation

DOI:

https://doi.org/10.21638/spbu01.2024.101

Abstract

The article contains a review of the most important results obtained in the framework of the St.Petersburg State University research school on nonlinear PDEs (the O.A. Ladyzhenskaya - N.N. Uraltseva school). The main attention is paid to the works carried out at our university over the past 50 years. The first part of the review concerns the solvability and qualitative properties of solutions to boundary value problems for the second order scalar quasilinear elliptic and parabolic equations, as well as variational problems. The planned second part of the review will include sections on fully nonlinear equations and systems of equations and on free boundary problems.

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References

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Kozlov V., Nazarov A. Oblique derivative problem for non-divergence parabolic equations with time-discontinuous coefficients. Proceedings of the St. Petersburg Mathematical Society. Vol. XV. Advances in mathematical analysis of partial differential equations. Amer. Math. Soc., Providence, RI. Vol. 232. Оf Amer. Math. Soc. Transl. Ser. 2, 177–191 (2014). https://doi.org/10.1090/trans2/232/10

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Nazarov A. I., Uraltseva N. N. The Harnack inequality and related properties for solutions of elliptic and parabolic equations with divergence-free lower-order coefficients. Algebra i analiz 23 (1), 136–168 (2011). (In Russian) [Eng. transl.: St. Petersburg Math. J. 23 (1), 93–115 (2012). https://doi.org/10.1090/S1061-0022-2011-01188-4].

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Ibraguimov A., Nazarov A. I. On Phragmen—Lindel¨of principle for non-divergence type elliptic equations and mixed boundary conditions. Mat. Fiz. Komp’yut. Model. 3 (40), 65–76 (2017). https://doi.org/10.15688/mpcm.jvolsu.2017.3.5

Cao D., Ibraguimov A., Nazarov A. I. Mixed boundary value problems for nondivergence type elliptic equations in unbounded domains. Asymptot. Anal. 109 (1–2), 75–90 (2018). https://doi.org/10.3233/asy-181469

Kozlov V., Nazarov A. A comparison theorem for nonsmooth nonlinear operators. Potentia Anal. 54 (3), 471–481 (2021). https://doi.org/10.1007/s11118-020-09834-8

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Osmolovskii V.G. Quasistationary phase transition problem in two-phase media. Onedimensional case. The zero surface stress coefficient. Probl. mat. anal. 82, 99–110 (2015). (In Russian) [Eng. transl.: J. Math. Sci. 210 (5), 664–676 (2015). https://doi.org/10.1007/s10958-015-2585-0].

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Osmolovskii V.G. One-dimensional problem of phase transitions in the mechanics of a continuous medium at a variable temperature. Zapiski nauchnykh seminarov POMI 508, 134–146 (2021). (In Russian)

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Nazarov A. I. On solutions to the Dirichlet problem for an equation with p-Laplacian in a spherical layer. Trudy SPbMO 10, 33–62 (2004). (In Russian) [Eng. transl.: Proc. St.Petersburg Math. Soc. Vol. X. Providence, AMS Transl. Ser. 2. Vol. 214, 29–57 (2005). https://doi.org/10.1090/trans2/214/03].

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Kolonitskii S.B., Nazarov A. I. Multiplicity of solutions to the Dirichlet problem for generalized Henon equation. Probl. mat. anal. 35, 91–110. (2007). (In Russian) [Eng. transl.: J. Math. Sci. 144 (6), 4624–4644 (2007). https://doi.org/10.1007/s10958-007-0299-7].

Kolonitskii S.B. Multiplicity of solutions of the Dirichlet problem for an equation with the p-Laplacian in a three-dimensional spherical layer. Algebra i analiz 22 (3), 206–221 (2010). (In Russian) [Eng. transl.: St.Petersburg Math. J. 22 (3), 485–495.(2011). https://doi.org/10.1090/S1061-0022-2011-01154-9].

Kolonitskii S.B. Multiplicity of 1D-concentrated positive solutions to the Dirichlet problem for an equation with p-Laplacian. Funkts. anal. prilozh. 49 (2), 88–92 (2015). https://doi.org/10.4213/faa3193 (In Russian) [Eng. transl.: Funct. Anal. Appl. 49 (2), 151–154 (2015). https://doi.org/10.1007/s10688-015-0099-7].

Enin A. I., Nazarov A. I. Multiplicity of solutions to the quasilinear Neumann problem in the 3-Dimensional case. Probl. Mat. Anal. 78, 85–94. (2015). (In Russian) [Eng. transl.: J. Math. Sci. 207 (2), 206–217 (2015). https://doi.org/10.1007/s10958-015-2366-9].

Nazarov A. I., Neterebskii B.O. The multiplicity of positive solutions to a quasilinear equation generated by the Il’in-Caffarelli-Cohn-Nirenberg inequality. Zapiski nauchnykh seminarov POMI 444, 98–109 (2016). (In Russian) [Eng. transl.: J. Math. Sci. 224 (3), 448–455 (2017). https://doi.org/10.1007/s10958-017-3427-z].

Enin A. Multiplicity of positive solutions for a critical quasilinear Neumann problem. Arch. Math. 109 (3), 263–272 (2017). https://doi.org/10.1007/s00013-017-1064-x.

Shcheglova A.P. The Neumann problem for the generalized Henon equation. Probl. Mat. Anal. 95, 103–114 (2018). (In Russian) [Eng. transl.: J. Math. Sci. 128 (5), 360–373 (2018). https://doi.org/10.1007/s10958-018-4078-4].

Lerman L.M., Naryshkin P. E., Nazarov A. I. Abundance of entire solutions to nonlinear elliptic equations by the variational method. Nonlinear Anal. 190, 111590 (2020). https://doi.org/10.1016/j.na.2019.111590

Buslaev A.P., Kondrat’ev V.A., Nazarov A. I. On a family of extremal problems and related properties of an integral. Mat. zametki. 64 (6), 830–838 (1998). (In Russian) [Eng. transl.: Math. Notes 64 (6), 719–725 (1998). https://doi.org/10.1007/BF02313029].

Nazarov A. I. On an exact constant in the generalized Poincar˚ALe inequality. Probl. Mat. Anal. 24, 155–180 (2002). (In Russian) [Eng. transl.: J. Math. Sci. 112 (1), 4029–4047 (2002). https://doi.org/10.1023/A:1020006108806].

Gerasimov I.V., Nazarov A. I. Best constant in a three-parameter Poincare inequality. Probl. Mat. Anal. 61, 69–86 (2011). (In Russian) [Eng. transl.: J. Math. Sci. 179 (1), 80–99 (2007). https://doi.org/10.1007/s10958-011-0583-4].

Nazarov A. I. On the “one-dimensionality” of the extremal for the Poincare inequality in a square. Zapiski nauchnykh seminarov POMI 259, 167–181 (1999). (In Russian) [Eng. transl.: J. Math. Sci. 109 (5), 1928–1939 (2002). https://doi.org/10.1023/A:1014496325564].

Nazarov A. I. The one-dimensional character of an extremum point of the Friedrichs inequality in spherical and plane layers. Probl. Mat. Anal. 20, 171–190 (2000). (In Russian) [Eng. transl.: J. Math. Sci. 102 (5), 4473–4486 (2000). https://doi.org/10.1007/BF02672901].

Nazarov A. I. On the symmetry of extremals in the weight embedding theorem. Probl. Mat. Anal. 23, 50–75 (2001). (In Russian) [Eng. transl.: J. Math. Sci. 107 (3), 3841–3859 (2001). https://doi.org/10.1023/A:1012336127123].

Nazarov A. I., Shcheglova A.P. On some properties of extremals in a variational problem generated by the Sobolev embedding theorem. Probl. Mat. Anal. 27, 109–136 (2004). (In Russian) [Eng. transl.: J. Math. Sci. 120 (2), 1125–1144 (2004). https://doi.org/10.1023/B:JOTH.0000014842.55031.98].

Shcheglova A.P. The Neumann problem for semilinear elliptic equation in thin cylinder. The least energy solutions. Zapiski nauchnykh seminarov POMI 348, 272–302 (2007). (In Russian) [Eng. transl.: J. Math. Sci. 152 (5), 780–798 (2008) https://doi.org/10.1007/s10958-008-9089-0].

Mukoseeva E.V., Nazarov A. I. On the symmetry of the extremal in some embedding theorems. Zapiski nauchnykh seminarov POMI 425, 35–45 (2014). (In Russian) [Eng. transl.: J. Math. Sci. 210 (6), 779–786 (2015). https://doi.org/10.1007/s10958-015-2589-9]. Correction in: Zapiski nauchnykh seminarov POMI 489, 225 (2020). (In Russian) [Eng. transl.: J. Math. Sci. (2022). 260 (1), 155].

Nazarov A. I., Shcheglova A.P. Steklov-type 1D inequalities (a survey) (2021). arxiv: math.AP/2101.10752v1.

Nazarov A. I. The eigenfunctions of a Sturm-Liouville problem related to generalized Lyapunov sines. Differenz. uravneniya 36 (7), 1000 (2000). (In Russian) [Eng. transl.: Differ. Equ. 36 (7), 1112–1113 (2000). https://doi.org/10.1007/BF02754516].

Nazarov A. I. On sharp constants in one-dimensional embedding theorems of arbitrary order. In: Problems of contemporary approximation theory. St. Petersburg, St. Рetersburg University Press 146–158 (2004). (In Russian) [Eng. transl.: arxiv: math.CA/1308.2259v1].

Nazarov A. I., Petrova A.N. On exact constants in some embedding theorems of high order. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy 53 (4), 16–20 (2008). (In Russian) [Eng. transl.: Vestnik St. Petersburg University. Mathematics 41 (4), 298–302 (2008). https://doi.org/10.3103/S1063454108040031].

Nazarov A. I., Repin S. I. Exact constants in Poincare type inequalities for functions with zero mean boundary traces. Math. Methods Appl. Sci. 38 (15), 3195–3207 (2015). https://doi.org/10.1002/mma.3290

Nazarov A. I., Ustinov N. S. A generalization of the Hardy inequality. Zapiski nauchnykh seminarov POMI 477, 112–118 (2018). (In Russian) [Eng. transl.: J. Math. Sci. 244 (6), 998–1002 (2020). https://doi.org/10.1007/s10958-020-04669-5].

Nazarov A. I., Shcheglova A.P. On the sharp constant in the “magnetic” 1D embedding theorem. Russ. J. Math. Phys. 25 (1), 67–72 (2018). https://doi.org/10.1134/S1061920818010065

Musina R., Nazarov A. I. A weighted estimate for generalized harmonic extensions. Math. Inequal. Appl. 23 (2), 419–424 (2020). https://doi.org/10.7153/mia-2020-23-32

Cora G., Musina R., Nazarov A. I. Hardy type inequalities with mixed weights in cones (2023). arxiv: math.AP/2305.05034v1.

Kuznetsov N., Nazarov A. Sharp constants in the Poincare, Steklov and related inequalities (a survey). Mathematika 61 (2), 328–344 (2015). https://doi.org/10.1112/S0025579314000229

Bankevich S.V., Nazarov A. I. A generalization of the Polya—Szeg¨o inequality for onedimensional functionals. Doklady Akad. Nauk 438 (1), 11–13 (2011). (In Russian) [Eng. transl.: Doklady Math. 83 (3), 287–289 (2011). https://doi.org/10.1134/S1064562411030021].

Bankevich S.V., Nazarov A. I. On monotonicity of some functionals under rearrangements. Calc. Var. Partial Differential Equations 53 (3–4), 627–647 (2015). https://doi.org/10.1007/s00526-014-0761-6

Bankevich S.V. On monotonicity of some functionals under monotone rearrangement with respect to one variable. Zapiski nauchnykh seminarov POMI 444, 5–14 (2016). (In Russian) [Eng. transl.: J. Math. Sci. 224, 385–390 (2017). https://doi.org/10.1007/s10958-017-3423-3].

Bankevich S.V. On the Polya—Szeg¨o inequality for functionals with variable exponent. Funkts. Anal. Prilozh. 52 (1), 56–60 (2018). https://doi.org/10.4213/faa3523 (In Russian) [Eng. transl.: Funct. Anal. Appl. 52 (1), 45–48 (2018). https://doi.org/10.1007/s10688-018-0205-8].

Bankevich S. V., Nazarov A. I. On monotonicity of some functionals with variable exponent under symmetrisation. Appl.Anal. 98 (1–2), 362–373 (2019). https://doi.org/10.1080/00036811.2018.1437420

Nazarov A. I. Hardy—Sobolev inequalities in a cone. Probl. Mat. Anal. 31, 39–46 (2005). (In Russian) [Eng. transl.: J. Math. Sci. 132 (4), 419–427 (2006). https://doi.org/10.1007/s10958-005-0508-1].

Demyanov A.V., Nazarov A. I. On the existence of an extremal function in Sobolev embedding theorems with limit exponent. Algebra i analyz 17 (5), 105–140 (2005). (In Russian) [Eng. transl.: St. Petersburg Math. J. 17 (5), 773–796 (2006). https://doi.org/10.1090/S1061-0022-06-00929-0].

Demyanov A. V., Nazarov A. I. On the solvability of the Dirichlet problem for the semilinear Schr¨odinger equation with a singular potential. Zapiski nauchnykh seminarov POMI 336, 25–45 (2006). (In Russian) [Eng. transl.: J. Math. Sci. 143 (2), 2857–2868 (2007). https://doi.org/10.1007/s10958-007-0171-9].

Nazarov A., Reznikov A. Attainability of infima in the critical Sobolev trace embedding theorem on manifolds. Nonlinear partial differential equations and related topics. Amer. Math. Soc., Providence, RI 229 of Amer. Math. Soc. Transl. Ser. 2 197–210. (2010). https://doi.org/10.1090/trans2/229/12.

Nazarov A. I., Reznikov A.B. On the existence of an extremal function in critical Sobolev trace embedding theorem. J. Funct. Anal. 258 (11), 3906–3921 (2010). https://doi.org/10.1016/j.jfa.2010.02.018

Nazarov A. I. Trace Hardy—Sobolev inequalities in cones. Algebra i analiz. 22 (6), 200–213 (2010). (In Russian) [Eng. transl.: St. Petersburg Math. J. 22 (6), 997–1006 (2011). https://doi.org/10.1090/S1061-0022-2011-01180-X].

Nazarov A. I. On the Dirichlet problem generated by the Maz’ya-Sobolev inequality. Calc. Var. Partial Differential Equations 49 (1–2), 369–389 (2014). https://doi.org/10.1007/s00526-012-0586-0

Nazarov A. I. Dirichlet and Neumann problems to critical Emden-Fowler type equations. J. Global Optim. 40 (1–3), 289–303 (2008). https://doi.org/10.1007/s10898-007-9193-6

Nazarov A. I., Nikitin Ya.Yu. Some extremal problems for Gaussian and empirical random fields. Trudy SPbMO. Vol. 8. Novosibirsk, Nauchnaya kniga Publ. (2000). (In Russian) [Eng. transl.: St. Petersburg Math. Soc. Vol.VIII. Providence, AMS Transl. Ser. 2. Vol. 205, 189–202 (2002). https://doi.org/10.1090/trans2/205].

Lifshits M., Nazarov A., Nikitin Ya. Tail behavior of anisotropic norms for Gaussian random fields. C.R. Math. Acad. Sci. Paris. 336 (1), 85–88 (2003). https://doi.org/10.1016/S1631-073X(02)00013-4

Nazarov A. I., Tchirina A.V. On the available local asymptotic efficiency of some goodnessof-fit criteria. Zapiski nauchnykh seminarov POMI 501, 218–235 (2021). (In Russian) [Eng. transl.: J. Math. Sci. 273 (5), 804–815 (2023). https://doi.org/10.1007/s10958-023-06543-6].

Musina R., Nazarov A. I. On fractional Laplacians. Comm. Partial Differential Equations 39 (9), 1780–1790 (2014). https://doi.org/10.1080/03605302.2013.864304

Musina R., Nazarov A. I. On fractional Laplacians — 2. Ann. Inst. H. Poincare Anal. Non Lineaire 33 (6), 1667–1673 (2016). https://doi.org/10.1016/j.anihpc.2015.08.001

Musina R., Nazarov A. I. On fractional Laplacians — 3. ESAIM Control Optim. Calc. Var. 22 (3), 832–841 (2016). https://doi.org/10.1051/cocv/2015032

Musina R., Nazarov A. I. Strong maximum principles for fractional Laplacians. Proc. Roy. Soc. Edinburgh Sect. A. 149 (5), 1223–1240 (2019). https://doi.org/10.1017/prm.2018.81

Musina R., Nazarov A. I. A note on truncations in fractional Sobolev spaces. Bull. Math. Sci. 9 (1), 1950001, 7 (2019). https://doi.org/10.1142/S1664360719500012

Musina R., Nazarov A. I. A note on higher order fractional Hardy—Sobolev inequalities. Nonlinear Anal. 203, 112168, 3 (2021). https://doi.org/10.1016/j.na.2020.112168

Musina R., Nazarov A. I. Fractional operators as traces of operator-valued curves (2022). arxiv: math.AP/2208.06873v1

Nazarov A. I. On comparison of fractional Laplacians. Nonlinear Anal. 218, 112790 (2022). https://doi.org/10.1016/j.na.2022.112790

Musina R., Nazarov A. I. Non-critical dimensions for critical problems involving fractional Laplacians. Rev. Mat. Iberoam. 32 (1), 257–266 (2016). https://doi.org/10.4171/RMI/885

Musina R., Nazarov A. I., Sreenadh K. Variational inequalities for the fractional Laplacian. Potential Anal. 46 (3), 485–498 (2017). https://doi.org/10.1007/s11118-016-9591-9

Musina R., Nazarov A. I. Variational inequalities for the spectral fractional Laplacian. Comp. Math. and Math. Phys. 57 (3), 373–386 (2017). https://doi.org/10.1134/S0965542517030113

Musina R., Nazarov A. I. A tool for symmetry breaking and multiplicity in some nonlocal problems. Math. Methods Appl. Sci. 43 (16), 9345–9357 (2020). https://doi.org/10.1002/mma.6220

Musina R., Nazarov A. I. Complete classification and nondegeneracy of minimizers for the fractional Hardy—Sobolev inequality, and applications. J. Differential Equations 280, 292–314 (2021). https://doi.org/10.1016/j.jde.2021.01.022

Musina R., Nazarov A. I. On the Sobolev and Hardy constants for the fractional Navier Laplacian. Nonlinear Anal. 121, 123–129 (2015). https://doi.org/10.1016/j.na.2014.09.021

Musina R., Nazarov A. I. Fractional Hardy-Sobolev inequalities on half spaces. Nonlinear Anal. 178, 32–40 (2019). https://doi.org/10.1016/j.na.2018.07.002

Musina R., Nazarov A. I. Sobolev inequalities for fractional Neumann Laplacians on half spaces. Adv. Calc. Var. 14 (1), 127–145 (2021). https://doi.org/10.1515/acv-2018-0020

Ustinov N. S. Multiplicity of positive solutions to the boundary value problems for fractional Laplacians Zapiski nauchnykh seminarov POMI 459, 104–126 (2017). (In Russian) [Eng. transl.: J. Math. Sci. 236 (4), 446-460 (2019). https://doi.org/10.1007/s10958-018-4124-2].

Ustinov N. S. On the attainability of the best constant in fractional Hardy—Sobolev inequalities involving the spectral Dirichlet Laplacian. Funkts. Anal. Prilozh. 53 (4), 93–98 (2019). https://doi.org/10.4213/faa3673 (In Russian) [Eng. transl.: Funct. Anal. Appl. 53 (4), 317–321 (2019). https://doi.org/10.1134/S0016266319040105].

Ustinov N. The effect of curvature in fractional Hardy—Sobolev inequality involving the spectral Dirichlet Laplacian. Trans. Amer. Math. Soc. 373 (11), 7785–7815 (2020). https://doi.org/10.1090/tran/8124

Ustinov N. S. On the constancy of the extremal function in the embedding theorem of fractional order. Funkts. Anal. Prilozh. 54 (4), 85–97 (2020). https://doi.org/10.4213/faa3828 (In Russian) [Eng. transl.: Funct. Anal. Appl. 54 (4), 295–305 (2020). https://doi.org/10.1134/S0016266320040073].

Shcheglova A.P. Multiplicity of positive solutions for the generalized Henon equation with fractional Laplacian. Zapiski nauchnykh seminarov POMI 489, 207–224 (2020). (In Russian) [Eng. transl.: J. Math. Sci. 260 (1), 142–154 (2022). https://doi.org/10.1007/s10958-021-05678-8].

Nazarov A. I., Shcheglova A.P. New classes of solutions to semilinear equations in Rn with fractional Laplacian. Zapiski nauchnykh seminarov POMI 508, 124–133 (2021). (In Russian)

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Published

2024-05-10

How to Cite

Apushkinskaya, D. E., Arkhipova, A. A., Nazarov, A. I., Osmolovskii, V. G., & Uraltseva, N. N. (2024). A survey of results of St.Petersburg State University research school on nonlinear partial differential equations I. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 11(1), 3–37. https://doi.org/10.21638/spbu01.2024.101

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Section

To the 300th anniversary of SPSU