Zobrazeno 1 - 10
of 152
pro vyhledávání: '"Igor Leite Freire"'
Publikováno v:
Journal of Differential Equations. 320:371-398
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8ff2fd26efb50f9599ed88791ea0554
https://doi.org/10.1016/j.jde.2022.02.058
https://doi.org/10.1016/j.jde.2022.02.058
Publikováno v:
Studies in Applied Mathematics. 148:758-772
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d733392289b3186a734701d212f74826
https://doi.org/10.1111/sapm.12457
https://doi.org/10.1111/sapm.12457
Publikováno v:
Studies in Applied Mathematics. 147:978-1006
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf17d7b219efe94b69877ae06a21a074
https://doi.org/10.1111/sapm.12416
https://doi.org/10.1111/sapm.12416
Publikováno v:
Advances in Mathematical Physics, Vol 2017 (2017)
Externí odkaz:
https://doaj.org/article/11db7cea6e9d4bb4b04225f8e3a7b53e
Publikováno v:
Studies in Applied Mathematics. 145:537-562
Recent generalizations of the Camassa-Holm equation are studied from the point of view of existence of global solutions, criteria for wave breaking phenomena and integrability. We provide conditions, based on lower bounds for the first spatial deriva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8377c2840d4738adee1c355e0636572c
https://doi.org/10.1111/sapm.12327
https://doi.org/10.1111/sapm.12327
We consider a three-parameter family of non-linear equations with $(p+1)-$order non-linearities. Such family includes as a particular member the well-known $b-$equation, which encloses the famous Camassa-Holm equation. For certain choices of the para
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65b2f401619fbb3a0fa1d52d35530c86
http://arxiv.org/abs/2202.07110
http://arxiv.org/abs/2202.07110
Autor:
Igor Leite Freire, Nazime Sales Filho
Lie symmetries of a Novikov geometrically integrable equation are found and group-invariant solutions are obtained. Local conservation laws up to second order are established as well as their corresponding conserved quantities. Sufficient conditions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ff69c5692ea8935c89b6caa6ac303a5
http://arxiv.org/abs/2201.03635
http://arxiv.org/abs/2201.03635
Publikováno v:
Proceeding Series of the Brazilian Society of Computational and Applied Mathematics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f03fe1392e4162e2f6c6a8e3acf9aa15
https://doi.org/10.5540/03.2021.008.01.0480
https://doi.org/10.5540/03.2021.008.01.0480
Autor:
Igor Leite Freire, Mariano Torrisi
Publikováno v:
Abstract and Applied Analysis, Vol 2014 (2014)
A class of reaction-diffusion systems unifying several Aedes aegypti population dynamics models is considered. Equivalence transformations are found. Extensions of the principal Lie algebra are derived for some particular cases.
Externí odkaz:
https://doaj.org/article/a89753b2cfc542d8962b8ac90f2fa0fa
Publikováno v:
Abstract and Applied Analysis, Vol 2014 (2014)
The concepts of strictly, quasi, weak, and nonlinearly self-adjoint differential equations are revisited. A nonlinear self-adjoint classification of a class of equations with second and third order is carried out.
Externí odkaz:
https://doaj.org/article/55cec8a257494332b576a632a995810d