Zobrazeno 1 - 10
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pro vyhledávání: '"Euler operator"'
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Akademický článek
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Publikováno v:
Thermal Science, Vol 25, Iss 2 Part B, Pp 1365-1372 (2021)
In this paper, we present the fractional motion equations and fractional non-Noether symmetries of Lagrangian systems with the conformable fractional derivatives. The exchanging relationship between isochronous variation and fractional derivative, an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cea311087dae69b2a0e6dd0231fb318c
https://doi.org/10.2298/tsci200520035f
https://doi.org/10.2298/tsci200520035f
Autor:
Krannich, Friedemann
Many partial differential equations (PDEs) admit conserved quantities like mass or energy. Those quantities are often essential to establish well-posed results. When approximating a PDE by a finite-difference scheme, it is natural to ask whether rela
Externí odkaz:
http://hdl.handle.net/10754/676654
Autor:
Yu. Yu. Bagderina
Publikováno v:
Journal of Mathematical Sciences. 252:125-134
Asymptotic solutions of the eigenvalue problem for an Euler operator in a neighborhood of a regular singular point are considered. We find a condition under which the asymptotic expansion is free of logarithms. Eigenvalues expressed in terms of eleme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5a34951bb3cf94f413c94a73f38dbcf
https://doi.org/10.1007/s10958-020-05147-8
https://doi.org/10.1007/s10958-020-05147-8
Publikováno v:
Mathematical Notes. 108:15-28
We construct the Lie algebras of systems of $$2g$$ graded heat operators $$Q_0,Q_2,\dots,Q_{4g-2}$$ that determine the sigma functions $$\sigma(z,\lambda)$$ of hyperelliptic curves of genera $$g=1$$ , $$2$$ , and $$3$$ . As a corollary, we find that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c1287b59541fd4108fd39cce5280ed0
https://doi.org/10.1134/s0001434620070020
https://doi.org/10.1134/s0001434620070020
Autor:
Jialiang Dai
Publikováno v:
Theoretical and Mathematical Physics. 202:150-164
Using the Whitham hierarchy, we obtain the Picard—Fuchs equations in$${\mathcal N} = 2$$supersymmetric Yang—Mills theory for a classical gauge group with Nfmassless hypermultiplets. In the general case for Nf ≠ 0, there are at least r−2 Picar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e7e9158186485ded4898812b66dc205
https://doi.org/10.1134/s0040577920020026
https://doi.org/10.1134/s0040577920020026
Akademický článek
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Autor:
Yu. Yu. Bagderina
Publikováno v:
Journal of Mathematical Sciences. 241:379-395
The eigenfunction problem for a scalar Euler operator leads to an ordinary differential equation, which is an analog of higher-order Bessel equations. Its solutions are expressed through elementary functions in the case where the corresponding Euler
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::607df322f440c345f66cea1efa43ab62
https://doi.org/10.1007/s10958-019-04431-6
https://doi.org/10.1007/s10958-019-04431-6
Autor:
Jialiang Dai, Engui Fan
Publikováno v:
Theoretical and Mathematical Physics. 198:317-330
We derive infinitely many meromorphic differentials based on the fractional powers of the superpotential arising from hyperelliptic curves. We obtain various differential equations expressed in terms of the moduli derivatives of the Seiberg–Witten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78a19690d1e9f8d36a9a5f446dff9233
https://doi.org/10.1134/s0040577919030012
https://doi.org/10.1134/s0040577919030012