Arbeitsgruppe Prof. S. Rjasanow Institut für angewandte Mathematik

## PD Dr. Darya Apushkinskaya

Gebäude E1.1, Zimmer 3.23.2

FR 6.1 Mathematik
Universität des Saarlandes
Postfach 15 11 50
D-66041 Saarbrücken

 Tel.: +49 (0)681 / 302 2956 Fax: +49 (0)681 / 302 3028 E-Mail: darya (at) math.uni-sb.de

##### Research interests
• free boundary problems,
• hysteresis,
• boundary value problems with singularities,
• variational problems with nonstandard growth conditions,
• boundary value problems with Venttsel conditions.
##### Collaborations
• St. Petersburg State University
• Free University, Berlin
• V.A.Steklov Math. Institute, St. Petersburg Branch
• Royal Institute of Technology, Stockholm
• St. Petersburg State Polytechnical University
• People's Friendship University of Russia (RUDN)
##### Teaching
• WS 2018/2018 Compact Course PDEs and Boundary Value Problems
• SS 2017 Compact Course by Dian Palagachev: Harmonic analysis methods and the regularity problem for PDEs with discontinuous data. Script: erasmus_corrected.pdf
• SS 2015 Calculus of Variations
• WS 2014/2015 Frauen in der Mathematik
• WS 2014/2015 PDEs and Boundary Value Problems
• SS 2014 Calculus of Variations
• WS 2013/2014 Differentialgeometrie II (Flächentheorie)
• WS 2013/2014 PDEs and Boundary Value Problems
• SS 2013 Differentialgeometrie I (Kurventheorie)
• SS 2013 Calculus of Variations
• WS 2012/2013 PDEs and Boundary Value Problems
• SS 2012 Darstellungsmethoden für Lösungen partieller Differentialgleichungen
• SS 2011 Elementarkurs Partielle Differentialgleichungen
• WS 2010/2011 Freie Randwertprobleme
• SS 2010 Mathematik für Naturwissenschaftler II
• WS 2009/2010 Mathematik für Naturwissenschaftler I
• SS 2009 Höhere Mathematik für Ingenieure IV
• WS 2008/2009 Höhere Mathematik für Ingenieure III
• SS 2008 Höhere Mathematik für Ingenieure II
• WS 2007/2008 Höhere Mathematik für Ingenieure I
• SS 2007 Free Boundary Problems in Financial Mathematics
• WS 2006/2007 Elementarkurs Partielle Differentialgleichungen
• SS 2006 Mathematik für Naturwissenschaftler II
• WS 2005/2006 Mathematik für Naturwissenschaftler I
• SS 2005 Elementarkurs Partielle Differentialgleichungen
• WS 2004/2005 Elementarkurs Partielle Differentialgleichungen
• WS 2004/2005 Proseminar: Differentialgeometrie von Kurven und Flächen
• SS 2003 Proseminar: Variational Calculus with Elementary Convexity
##### Preprints
1. The Queen of Rhymes and the Queen of Formulas (around the poem „In Vyborg“), (with A.I. Nazarov), UdS Math. Department Preprint, No. 403 (2019), 1–16. https://www.math.uni-sb.de/service/preprints/preprint403.pdf.
##### Book
1. Free Boundary Problems: Regularity Properties Near the Fixed Boundary, Lecture Notes in Mathematics. vol. 2218. Springer, Berlin-Heidelberg-New York, 2018.https://doi.org/10.1007/978-3-319-97079-0.
##### Book chapters
1. The Queen of Rhymes and the Queen of Formulas (around the poem „In Vyborg“), (with A.I. Nazarov), in book: Mathematics and Literature, CIM Series in Mathematical Sciences, Springer (to appear).
2. V.I. Smirnov (1887-1974), (with A.I. Nazarov), in book: Mathematical St. Petersburg, History, Science, Sightseeing. 2018.
3. O.A. Ladyzhenskaya (1922-2004), (with A.I. Nazarov), in book: Mathematical St. Petersburg, History, Science, Sightseeing. 2018.
4. Chapter 23. Geometric and electromagnetic aspects of fusion pore making, (with E. Apushkinsky, B. Booß-Bavnbek and M. Koch), Systems Biology (Springer Book Series), vol. 2, Systems biology of regulated exocytosis in pancreatic ß-cells, Springer Verlag, 2011.
##### Edited book
1. Advances in Mathematical Analysis of Partial Differential Equations, (D. Apushkinskaya, A.I. Nazarov eds.), Proceedings of the St. Petersburg Mathematical Society, Vol. XV, AMS Transl. Ser.2, 232, AMS, 2014.
##### Translated book
1. Estimates for Differential Operators in Half-space, I.V. Gel'man and V.G.Maz'ya, (Translated from the German by D. Apushkinskaya), EMS Tracts in Mathematics, vol. 31, EMS Publishing House, Switzerland, 2019.
##### Edited Special Journal Issues
1. Special issue on occasion of jubilee of Nina N. Uraltseva, (D.E. Apushkinskaya, A.I. Nazarov Guest eds.), St. Petersburg Math. J., 32 (2020), no.3-4.
2. Special issue „Boundary value problems, singular integrals and variational methods“, (D.E. Apushkinskaya, A.I. Nazarov, and S.I. Repin: guest eds.), St. Petersburg Math. J., 31 (2019), no.3.
3. Special issue „PDEs and Complex Analysis“, (D. Apushkinskaya, A. Baranov, and A. Nazarov: guest eds.), Complex Variables and Elliptic Equations, 63 (2018), no.7-8.
4. Special issue on occasion of jubilee of Nina N. Uraltseva, (D.E. Apushkinskaya, A.I. Nazarov Guest eds.), St. Petersburg Math. J., 27 (2015), no.3.
##### Articles in international scientific journals
1. Venttsel boundary value problems with discontinuous data, (with A. Nazarov, D.K. Palagachev, and L. Softova), SIAM J. Math. Analysis, 53 (2021), no.1, 221-252.
2. Biharmonic obstacle problem: guaranteed and computable error bounds for approximate solutions, (with S.I. Repin), Comput. Math. Math. Phys., 60 (2020), no.11, 1881-1897.
3. Elliptic Venttsel problems with VMO coefficients, (with A. Nazarov, D.K. Palagachev, and L. Softova), Atti Accad. Naz. Lincei Rend. Lincei Mat. Appl., 31 (2020), 389-397. https://www.ems-ph.org/journals/show_abstract.php?issn=1120-6330&vol=31&iss=2&rank=7&p403=1
4. The Ties That Bind: Olga Alexandrovna Ladyzhenskaya and the 2022 ICM in St. Petersburg, (with D. Dumbaugh, P. Daskalopoulos, A. Vershik, L. Kapitanski, N. Reshetikhin, and A. Nazarov), Notices of the AMS, 67 (2020), no.3, 373-381.https://doi.org/10.1090/noti2047
5. In Search of Shadows: the First Topological Conference, Moscow 1935, (with A.I. Nazarov and G.I. Sinkevich), Math. Intelligencer, 41 (2019), no.4, 37-42. https://link.springer.com/article/10.1007/s00283-019-09907-6.
6. On the Boundary Point Principle for divergence-type equations, (with A.I. Nazarov), Atti Accad. Naz. Lincei Rend. Lincei Mat. Appl., 30 (2019), no.4, 677-699. https://www.ems-ph.org/journals/show_abstract.php?issn=1120-6330&vol=30&iss=4&rank=2.
7. Thin obstacle problem: estimates of the distance to the exact solution, (with S.I. Repin), Interfaces and Free Boundaries, 20 (2018), no.4, 511-531. https://www.ems-ph.org/journals/show_issue.php?issn=1463-9963&vol=20&iss=4.
8. To the anniversary of Vladimir Gilelevich Maz'ya, (with M.V. Anolik, A.A. Arkhipova, Yu.D. Burago, et al., Vestnik St. Petersburg. Univ. (Ser. Mat. Mekh. Astronom., vyp.3), 5(63) (2018), 524-526. http://vestnik.spbu.ru/html18/s01/s01v3/15.pdf.
9. Two-dimensional numerical simulation of tungsten melting in exposure to pulsed electron beam, (with A.S. Arakcheev, I.V. Kandaurov, A.A. Kasatov, V.V. Kurkuchekov, G.G. Lazareva, A.G. Maksimova, V.A. Popov, A.V. Snytnikov, Yu. A. Trunev, A.A. Vasilyev, L.N Vyacheslavov), Fusion Engineering and Design, 132 (2018), 13-17. https://doi.org/10.1016/j.fusengdes.2018.05.008.
10. Monotonicity formula for a problem with hysteresis, (with N.N. Uraltseva), Doklady Mathematics, 97 (2018), no.1, 49-51.
11. Protect the traces of Man in a sand of time, (with A.I. Nazarov), St. Petersburg Math. J., 30 (2018), no.2, 1-15.
12. Vladimir Ivanovich Smirnov (1887-1974), (with A.I. Nazarov), Complex Variables and Elliptic Equations, 63 (2018), no.7-8, 897-906. http://dx.doi.org/10.1080/17476933.2017.1391800.
13. A counterexample to the Hopf-Oleinik lemma (elliptic case), (with A.I. Nazarov), Analysis & PDE, 9 (2016), no. 2, 439-458. http://msp.org/apde/2016/9-2/p05.xhtml.
14. Free boundaries in problems with hysteresis, (with N.N. Uraltseva), Philosophical Transactions of the Royal Society A, 373 (2015), 20140271. http://dx.doi.org/10.1098/rsta.2014.0271.
15. Nina Nikolaevna Uraltseva. On the occasion of her jubilee, (with A.I. Nazarov), Algebra and Analysis, 27 (2015), no. 3, 3-5.
16. On regularity properties of solutions to hysteresis-type problems, (with N.N. Uraltseva), Interfaces and Free Boundaries, 17 (2015), no.1, 93-115. http://www.ems-ph.org/journals/show_abstract.php?issn=1463-9963&vol=17&iss=1&rank=5.
17. Uniform estimates near the initial state for solutions of the two-phase parabolic problems, (with N.N. Uraltseva), Algebra and Analysis, 25 (2013), no. 2, 63-74.
18. On local generalized minimizers and the local stress tensor for variational problems with linear growth, (with M. Bildhauer and M. Fuchs), Probl. Mat. Anal., 44 (2010), 39-54 [Russian]; English transl. in J. Math. Sciences, 165 (2010), no.1, 42-59.http://link.springer.com/article/10.1007/s10958-010-9779-2.
19. Interior gradient bounds for local minimizers of variational integrals under nonstandard growth conditions, (with M. Bildhauer and M. Fuchs), Probl. Mat. Anal., 43 (2009), 35-50 [Russian]; English transl. in J. Math. Sciences, 164 (2010), no.3, 345-363. http://link.springer.com/article/10.1007/s10958-009-9751-1.
20. The behavior of the free boundary close to a fixed boundary in a parabolic problem, (with N. Matevosyan and N.N. Uraltseva), Indiana Univ. Math. J. 58 (2009), no. 2, 583-604. http://www.iumj.indiana.edu/IUMJ/ABS/2009/3457.
21. Boundary estimates for solutions to the two-phase parabolic obstacle problem, (with N.N. Uraltseva), Probl. Mat. Anal., 38 (2008), 3-9 [Russian];
English transl. in J. Math. Sciences, 156 (2009), no.4, 569-576. http://link.springer.com/article/ 10.1007/s10958-009-9284-7.
22. Partial regularity for higher order variational problems under anisotropic growth conditions, (with M. Fuchs), Ann. Acad. Sci. Fenn. Math. 32 (2007), no. 1, 199-214. http://www.acadsci.fi/mathematica/Vol32/vol32pp199-214.pdf.
23. Boundary estimates for solutions of two-phase obstacle problems, (with N.N. Uraltseva), Probl. Mat. Anal., 34 (2006), 3-11 [Russian];
English transl. in J. Math. Sciences, 142 (2007), no.1, 1723-1732.http://link.springer.com/article/10.1007/s10958-007-0083-8.
24. Steady states of anisotropic generalized Newtonian fluids, (with M. Bildhauer and M. Fuchs), J. Math. Fluid Mech., 7 (2005), no. 2, 261-297. http://link.springer.com/article/10.1007/s00021-004-0118-6.
25. Lipschitz property of the free boundary in the parabolic obstacle problem, (with H. Shahgholian and N.N. Uraltseva), Algebra i Analiz, 15 (2003), no. 3, 78-103 [Russian]; English transl. in St. Petersburg Math. J., 15 (2004), no. 3, 375-391. http://www.ams.org/journals/spmj/2004-15-03/S1061-0022-04-00813-1/S1061-0022-04-00813-1.pdf.
26. Quasilinear elliptic two-phase Venttsel's problems in the transversal case, (with A.I. Nazarov), Probl. Mat. Anal., 24 (2002), 3-28 [Russian];
English transl. in J. Math. Sciences, 112 (2002), no.1, 3927-3943. http://link.springer.com/article/10.1023/A%3A1020000522010.
27. The Dirichlet problem in weight spaces, (with A.I. Nazarov), Zap. Nauchn. Sem. St.-Petersburg Otdel. Math. Inst. Steklov (POMI), 288 (2002), 14-33 [Russian]; English transl. in J. Math. Sciences, 123 (2004), no. 6, 4527-4538. http://link.springer.com/article/10.1023/B%3AJOTH.0000041472.40491.f1.
28. On global solutions of a parabolic problem with an obstacle, (with H. Shahgholian and N.N. Uraltseva), Algebra i Analiz, 14 (2002), 3-25 [Russian]; English transl. in St. Petersburg Math. J., 14 (2003), no. 1, 1-17.
29. Linear two-phase Venttsel problems, (with A.I. Nazarov), Arkiv Math., 39 (2001), no.2, 201-222. http://link.springer.com/article/10.1007/BF02384554.
30. The Dirichlet problem for quasilinear elliptic equations in domains with smooth closed edges, (with A.I. Nazarov), Probl. Mat. Anal., 21 (2000), 3-29 [Russian]; English transl. in J. Math. Sciences, 105 (2001), no. 5, 654-673. http://link.springer.com/article/10.1023/A%3A1011362311390.
31. Boundary estimates for solutions to the parabolic free boundary problem, (mit H. Shahgholian and N.N. Uraltseva), Zap. Nauchn. Sem. St.-Petersburg Otdel. Math. Inst. Steklov (POMI), 271 (2000), 39-55.
http://www.pdmi.ras.ru/znsl/2000/v271.html.
32. Quasilinear two-phase Venttsel' problems, (with A.I. Nazarov), Zap. Nauchn. Sem. St.-Petersburg Otdel. Math. Inst. Steklov (POMI), 271 (2000), 11-38 [Russian]; English transl. in J. Math. Sciences, 115 (2003), no. 6, 2704-2719. http://link.springer.com/article/10.1023/A%3A1023305432516.
33. A survey of results on nonlinear Venttsel problems, (with A.I. Nazarov), Appl. Math., 45 (2000), no.1, 69-80.
34. The Venttsel' problem for nonlinear elliptic equations, (with A.I. Nazarov), Probl. Mat. Anal., 19 (1999), 3-26 [Russian]; English transl. in J. Math. Sciences, 101 (2000), no. 2, 2861-2880. http://link.springer.com/article/10.1007/BF02672175.
35. Estimates for the gradient of solutions to stationary degenerate Venttsel’ problems, (with A.I. Nazarov), Probl. Mat. Anal., 18 (1998), 43-69 [Russian];
English transl. in J. Math. Sciences, 98 (2000), no. 6, 654-673. http://link.springer.com/article/10.1007/BF02355382.
36. Hölder estimates for solutions to the degenerate boundary-value Venttsel’ problem for parabolic and elliptic equations of nondivergence type, (with A.I. Nazarov), Probl. Mat. Anal., 17 (1997), 3-19 [Russian];
English transl. in J. Math. Sciences, 97 (1999), no. 4, 4177-4188. http://link.springer.com/article/10.1007/BF02365038.
37. The nonstationary Venttsel' problem with quadratic growth with respect to the gradient, (with A.I. Nazarov), Probl. Mat. Anal., 15 (1995), 33-46 [Russian]; English transl. in J. Math. Sciences, 80 (1996), no. 6, 2197-2207. http://link.springer.com/article/10.1007/BF02362382.
38. On the quasilinear stationary Ventzel boundary-value problem, (with A.I. Nazarov), Zap. Nauchn. Sem. St.-Petersburg Otdel. Math. Inst. Steklov (POMI), 221 (1995), 20-29 [Russian]; English transl. in J. Math. Sciences, 87 (1997), no. 2, 3277-3283. http://link.springer.com/article/10.1007/BF02355580.
39. On the behavior of the free boundary near the boundary of the domain, (with N.N. Uraltseva), Zap. Nauchn. Sem. St.-Petersburg Otdel. Math. Inst. Steklov (POMI), 221 (1995), 5-19 [Russian]; English transl. in J. Math. Sciences, 87 (1997), no. 2, 3267-3276. http://link.springer.com/article/10.1007/BF02355579.
40. Boundary estimates for the first-order derivatives of a solution to a nondivergent parabolic equation with composite right-hand side and coefficients of lower-order derivatives, (with A.I. Nazarov), Probl. Mat. Anal., 14 (1995), 3-27 [Russian]; English transl. in J. Math. Sciences, 77 (1995), no. 4, 3257-3276. http://link.springer.com/article/10.1007/BF02364860.
41. Hölder estimates of solutions to initial-boundary value problems for parabolic equations of nondivergent form with Wentzel boundary condition, (with A.I. Nazarov), Amer. Math. Soc. Transl. (2), 64 (1995), 1-13.
42. An initial-boundary value problem with a Venttsel boundary condition for parabolic equations not in divergence form, (with A.I. Nazarov), Algebra i Analiz, 6 (1994), No.6, 1-29 [Russian]; English transl. in St. Petersburg Math. J., 6 (1995), No.6, 1127-1149.
43. On estimates on the boundary of the domain for the Hölder norms of derivatives of the solutions of linear parabolic equations with singularities of a special form, (with A.I. Nazarov), Vestnik S.-Peterburg. Univ. (Ser. Mat. Mekh. Astronom., vyp.3), (1993), 134-136 [Russian]; English transl. in Vestnik Leningrad Univ. Math., 26 (1993), No.3, 55-57.
44. A solution of the Bloch equations as a polynomial product, (with E.G. Apushkinsky and V.V.Moskalev), Vestnik Leningrad. Univ. (Ser. Phys. Chem., vyp.3), (1991), 16-22 [Russian].
45. An estimate for the maximum of solutions of parabolic equations with the Venttsel' condition, Vestnik Leningrad. Univ. (Ser. Mat. Mekh. Astronom., vyp.2), (1991), 3-12 [Russian]; English transl. in Vestnik Leningrad Univ. Math., 24 (1991), No.2, 1-11.
##### Contributions to conferences/proceedings
1. Effect of temperature on the energy gap in a superconductivity model using U-centers, (with E. Apushkinskiy, B. Popov, V. Saveliev, V. Sobolevskiy, and L. Krukovskaya), IOP J. Phys.: Conf. Ser., to appear.
2. $L^p$-theory of Venttsel BVPs with discontinuous data, (with A. Nazarov, D.K. Palagachev, and L. Softova), Atti della Accademia Peloritana dei Pericolanti, Classe di Science Fisice, Matematiğe e Naturali. (to appear).
3. Prediction of echo from noise signals by means of nonlinear transform of signal spectra, (with E.G. Apushkinskiy), In: Chaos and Complex Systems, Springer Proceedings in Complexity, S.G. Stavrinides and M. Ozer (eds.), Chapter 3, Springer (2020), 29–36.
4. Moscow 1935: Topological Puzzles, (with A.I. Nazarov and G.I. Sinkevich), Science and Technique, Proceedings of XL International Annual Scientific Conference of the St. Petersburg Branch of Russian National Committee on History and Philosophy of Science and Technique, Russian Academy of Sciences. (2019), p.263.
5. Venttsel problems with discontinuous data, Proc. XXX Crimean Fall Mathematical School-Symposium on Spectral and Evolutional Problems, Simferopol, Polyprint, 2019, 147-148. [Russian].
6. Some estimates for the thin obstacle problem, Book of Abstracts, International Conference on Mathematical Modelling and Computational Methods in Applied Sciences and Engineering: „Modelling 2019“, Olomouz, Czech Republic, September 16-20, 2019, eds.R. Blaheta, J. Stary, S. Sysala. Institute of Geonics of the Czech Academy of Sciences, 2019, p.54.
8. Regularity issues in the obstacle-type problems: a short survey, Book of Abstracts, International Conference on Differential Equations and Dynamical Systems, Suzdal, 6-11 July 2018, Vladimir, Izd. “Arkaim” (2018), p.226.
9. Numerical simulation in nonlinear dynamic systems with retiming of motions of individual components, (with E. Apushkinskiy), J. Phys.: Conf. Ser., 936 (2017), 012043.
10. Two portraits on a background of era, (with A. Nazarov), Science and Technique, Proceedings of XXXVIII International Annual Scientific Conference of the St. Petersburg Branch of Russian National Committee on History and Philosophy of Science and Technique, Russian Academy of Sciences. (2017), p.219. [Russian].
11. Error estimates for solutions of lower dimensional obstacle problems, The 8th International Conference on Differential and Functional Differential Equations. Moscow, Russia, August 13-20, 2017. International Workshop “Differential Equations and Interdisciplinary Investigations” . Moscow, Russia, August 17-19, 2017: Book of Abstracts, p.10-11.
12. Movement of a vortex filament near oscillating pinning centers in the hard superconductor, (with E. Apushkinskiy and M. Astrov), J. Phys.: Conf. Ser., 633 (2015), 012114.
http://iopscience.iop.org/article/10.1088/1742-6596/633/1/012114/meta.
13. Analysis of paramagnetic centers for threevalent iron in aluminosilicates, (with E. Apushkinskiy, B. Popov, V. Romanov, V. Saveliev and V. Sobolevski), J. Phys.: Conf. Ser., 633 (2015), 012115. http://iopscience.iop.org/article/10.1088/1742-6596/633/1/012115/meta.
14. On regularity properties of solutions to hysteresis-type problems, Book of Abstracts of the Seventh International Conference on Differential and Functional Differential Equations, Moscow, Russia, August 22-29, 2014, p.7.
15. Regularity properties in hysteresis-type problems, MURPHYS-HSFS-2014, 7th International Workshop on Multi-Rate Processes & Hysteresis and 2nd International Workshop on Hysteresis and Slow-Fast Systems, WIAS Berlin, April 7-11, 2014, Book of Abstracts, p.16.
16. L∝-estimates for derivatives of solutions to some parabolic free boundary problem, Deutsche Mathematiker-Vereinigung Jahrestagung in Saarbrücken, 17.-20. September 2012, Book of Abstracts, p.137.
17. Parabolic obstacle type problems - a survey, Book of Program and Abstracts of the International Workshop on Hysteresis and Slow-Fast Systems, Wittenberg, Germany, December 12-14, 2011.
18. Parabolic obstacle problem with contact points, Book of Abstracts of the Sixth International Conference on Differential and Functional Differential Equations, Moscow, Russia, August 14-21, 2011.
19. Free boundary problems in exocytosis, REx Workshop: Systems Biology of Regulated Exocytosis in Pancreatic ß-cells, Copenhagen, February 17-18, 2009, CD-ROM.
20. Regularity of free boundaries in parabolic obstacle type problems, Report No. 33, Oberwolfach Reports, Vol. 2 (2005), issue 3, 1913.
21. Free boundary regularity for parabolic obstacle problem, (with H. Shahgholian und N.N. Uraltseva) Deutshe Mathematiker-Vereinigung Jahrestagung 2003, 14.-19. September in Rostock, Vortragsauszüge.
22. Quasilinear elliptic Dirichlet problem in nonregular domains, (with A.I. Nazarov), Czechoslovak International Conference on Differential Equations and Their Applications, Prague, Czech Republic; August 27-31, 2001, Equadiff 10, Book of Abstracts, Posters and Extended Abstracts.
23. Quasilinear elliptic Dirichlet problems in domains with smooth edges, (with A.I. Nazarov), International Conference „Differential Equations and Related Topics“, dedicated to the Centenary Anniversary of Ivan G. Petrovskii (XX Joint Session of Petrovskii Seminar and Moscow Mathematical Society), Book of Abstracts, Moscow, 2001.
24. Nonlinear Venttsel problems, (with A.I. Nazarov), 3rd European Congress of Mathematics, Barselona, July 10 to 14, 2000, Proceedings CD-ROM.
25. Two-phase problems with Venttsel type interface conditions, Book of Abstracts Symposium Theory of PDE's and Special Topics of Theory of ODE's dedicated to 150th annivesary of birthday of S.V.Kovalevskaya, St.Petersburg, Russia, May 11-15, 2000.
26. The Venttsel problem for nonlinear elliptic equations, (with A.I. Nazarov), Book of Abstracts, International Conference on Differential and Functional Differential Equations, Moscow, Russia, August 16-21, 1999.
27. Degenerate Venttsel problems, Book of Absracts PDE Prague'98, Praha, August 10-16, 1998, Partial Differential Equations, Theory and Numerical Solutions, Karolinum, Praha, 1998.
28. On the Venttsel problem for parabolic equations, (with A.I. Nazarov), Proc. Third Crimean Fall Mathematical School-Symposium on Spectral and Evolutional Problems, Crimea, Ukraine, 1993.
ag/apushkinskaya.txt · Zuletzt geändert: 2021/01/12 22:29 von agrja