Zobrazeno 1 - 10
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pro vyhledávání: '"Baditoiu, Gabriel"'
Autor:
Baditoiu, Gabriel
We show the complete integrability of the Lax pair equations for certain low-dimensional Lie algebras of the infinitesimal character $\tilde\beta_0$ introduced in the paper \emph{Lax pair equations and {C}onnes-{K}reimer renormalization}, by G. B{\u{
Externí odkaz:
http://arxiv.org/abs/2312.00901
Autor:
Baditoiu, Gabriel
We classify the effective and transitive actions of a Lie group $G$ on an n-dimensional non-degenerate hyperboloid (also called real pseudo-hyperbolic space), under the assumption that $G$ is a closed, connected Lie subgroup of $SO_0(n-r,r+1)$, the c
Externí odkaz:
http://arxiv.org/abs/1309.1390
Publikováno v:
Bull. Math. Soc. Sci. Math. Roumanie, vol. 56 (2013), no. 2, 135-150
We obtain geometric characterizations of isospectral minimal Riemannian Legendre foliations on compact Sasakian manifolds of constant $\phi$-sectional curvature.
Comment: 14 pages
Comment: 14 pages
Externí odkaz:
http://arxiv.org/abs/1009.3194
Autor:
Baditoiu, Gabriel
Publikováno v:
Proceedings of the London Mathematical Society 105 (2012), no 6, 1315-1338
We classify pseudo-Riemannian submersions with connected totally geodesic fibres from a real pseudo-hyperbolic space onto a pseudo-Riemannian manifold. Also, we obtain the classification of the pseudo-Riemannian submersions with (para-)complex connec
Externí odkaz:
http://arxiv.org/abs/1001.4490
Autor:
Baditoiu, Gabriel, Rosenberg, Steven
We find a Lax pair equation corresponding to the Connes-Kreimer Birkhoff factorization of the character group of a Hopf algebra. This flow preserves the locality of counterterms. In particular, we obtain a flow for the character given by Feynman rule
Externí odkaz:
http://arxiv.org/abs/0905.2271
Autor:
Baditoiu, Gabriel, Rosenberg, Steven
We find a Lax pair equation corresponding to the Connes-Kreimer Birkhoff factorization of the character group of the Hopf algebra of Feynman diagrams. In particular, we obtain a flow for the character given by Feynman rules, and present a worked exam
Externí odkaz:
http://arxiv.org/abs/math-ph/0611014
Publikováno v:
Tokyo Journal of Mathematics, vol 29 (2006), No. 1, 247-270
Let $(M^{n},g)$ be a closed, connected, oriented, $C^{\infty}$, Riemannian, n-manifold with a transversely oriented foliation $\boldkey F$. We show that if $\lbrace X,Y \rbrace$ are basic vector fields, the leaf component of $[X,Y]$, $\Cal{V}[X,Y]$,
Externí odkaz:
http://arxiv.org/abs/math/0508164
Autor:
Baditoiu, Gabriel, Ianus, Stere
Publikováno v:
Rendiconti del Circolo Matematico di Palermo, Tomo LI (2002), 249-276
We get obstructions to existence of semi-Riemannian submersions with totally umbilic fibres.
Comment: 19 pages
Comment: 19 pages
Externí odkaz:
http://arxiv.org/abs/math/0206014
Autor:
Baditoiu, Gabriel
Publikováno v:
Tohoku Math. J. 56(2004) No. 2, 179-204
We classify semi-Riemannian submersions with connected totally geodesic fibres from a real pseudo-hyperbolic space onto a semi-Riemannian manifold under the assumption that the dimension of the fibres is less than or equal to three and the metrics in
Externí odkaz:
http://arxiv.org/abs/math/0005254
Autor:
Baditoiu, Gabriel, Ianus, Stere
Publikováno v:
Differential Geometry and its Applications, 16 (2002), no. 1, 79-94
We classify the semi-Riemannian submersions from a pseudo-hyperbolic space onto a Riemannian manifold under the assumption that the fibres are connected and totally geodesic. Also we obtain the classification of the semi-Riemannian submersions from a
Externí odkaz:
http://arxiv.org/abs/math/0005228