Zobrazeno 1 - 10
of 697
pro vyhledávání: '"Principal part"'
Autor:
Leila Gholizadeh, Angelo Mingarelli
Publikováno v:
Electronic Journal of Qualitative Theory of Differential Equations, Vol 2021, Iss 78, Pp 1-8 (2021)
We show that Sturm's classical separation theorem on the interlacing of the zeros of linearly independent solutions of real second order two-term ordinary differential equations necessarily fails in the presence of a turning point in the principal pa
Externí odkaz:
https://doaj.org/article/e20e2a171e1042dd927f1560643d1204
Autor:
McMaster, Brian, author, McCluskey, Aisling, author
Publikováno v:
Integration with Complex Numbers : A Primer on Complex Analysis, 2022.
Externí odkaz:
https://doi.org/10.1093/oso/9780192846075.003.0009
Autor:
Ludwig Kohaupt
Publikováno v:
Communications in Advanced Mathematical Sciences, Vol 2, Iss 1, Pp 27-47 (2019)
As the main new result, we show that one can construct a time-dependent positive definite matrix $R(t,t_0)$ such that the solution $x(t)$ of the initial value problem $\dot{x}(t)=A\,x(t)+h(t,x(t)), \; x(t_0)=x_0,$ under certain conditions satisfies t
Externí odkaz:
https://doaj.org/article/73af92ae9f31413ebca29e1910361c18
Akademický článek
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Autor:
Giuseppe Floridia, Hiroshi Takase
Publikováno v:
Journal of Differential Equations. 305:45-71
We prove global Lipschitz stability for inverse source and coefficient problems for first-order linear hyperbolic equations, the coefficients of which depend on both space and time. We use a global Carleman estimate, and a crucial point, introduced i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::888f7f8a239b1d27c82c30144531dbcb
https://doi.org/10.1016/j.jde.2021.10.007
https://doi.org/10.1016/j.jde.2021.10.007
Autor:
Tuan Anh Dao, Hiroshi Takeda
Publikováno v:
Journal of Hyperbolic Differential Equations. 18:729-760
In this paper, we consider the Cauchy problem for semi-linear wave equations with structural damping term [Formula: see text], where [Formula: see text] is a constant. As is now well known, the linear principal part brings both the diffusion phenomen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b25b990224f46ff367008825c5c42135
https://doi.org/10.1142/s0219891621500223
https://doi.org/10.1142/s0219891621500223
Autor:
Hans-Christoph Grunau
Publikováno v:
Archiv der Mathematik. 117:95-104
Estimates from above and below by the same positive prototype function for suitably modified Green functions in bounded smooth domains under Dirichlet boundary conditions for elliptic operators L of higher order $$2m\ge 4$$ 2 m ≥ 4 have been shown
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d750d33109129c321f6683e2dfbf0d7
https://doi.org/10.1007/s00013-021-01597-x
https://doi.org/10.1007/s00013-021-01597-x
Autor:
Yoshinaga, Etsuo
Publikováno v:
Transactions of the American Mathematical Society, 1989 Aug 01. 314(2), 803-814.
Externí odkaz:
https://www.jstor.org/stable/2001409
Akademický článek
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Autor:
Radu Precup
Publikováno v:
Electronic Journal of Qualitative Theory of Differential Equations, Vol 2020, Iss 87, Pp 1-9 (2020)
Existence of solutions to the Dirichlet problem for implicit elliptic equations is established by using Krasnoselskii–Schaefer type theorems owed to Burton–Kirk and Gao–Li–Zhang. The nonlinearity of the equations splits into two terms: one te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62edeab30fb8ee5ed108a42e56538ccc
http://www.math.u-szeged.hu/ejqtde/periodica.html?periodica=1¶mtipus_ertek=publication¶m_ertek=8934
http://www.math.u-szeged.hu/ejqtde/periodica.html?periodica=1¶mtipus_ertek=publication¶m_ertek=8934