Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Paola Piu"'
Publikováno v:
Annali di Matematica Pura ed Applicata (1923 -). 201:913-932
In this paper, we generalize a classical result of Bour concerning helicoidal surfaces in the three-dimensional Euclidean space $${\mathbb {R}}^3$$ R 3 to the case of helicoidal surfaces in the Bianchi–Cartan–Vranceanu (BCV) spaces, i.e., in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::465ffbb03c7287a9aca515ebdeb0572e
https://doi.org/10.1007/s10231-021-01143-0
https://doi.org/10.1007/s10231-021-01143-0
Autor:
Irene I. Onnis, Paola Piu
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
In this paper, we define and, then, we characterize constant angle spacelike and timelike surfaces in the three-dimensional Heisenberg group, equipped with a 1-parameter family of Lorentzian metrics. In particular, we give an explicit local parametri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c58ff8a472aca9cc1377d8a0bf4cf689
https://doi.org/10.1007/s00013-017-1104-6
https://doi.org/10.1007/s00013-017-1104-6
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
In this paper, we prove some results concerning the loxodromes on an invariant surface in a three-dimensional Riemannian manifold, a part of which generalizes classical results about loxodromes on rotational surfaces in $${{\mathbb {R}}}^3$$. In part
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::34c431ba56e47619d91668598d188857
https://doi.org/10.1007/s00009-019-1439-2
https://doi.org/10.1007/s00009-019-1439-2
Autor:
Gabriela Campione, Cristina Bottigelli, Paola Piu, Franca Fagioli, Filippo Candela, Annalisa Parrinello, E. Vassallo, Giulia Zucchetti
Publikováno v:
Journal of pediatric oncology nursing : official journal of the Association of Pediatric Oncology Nurses. 36(5)
Purpose: Reiki is a growing complementary therapy in pediatric oncology that needs evidence to become more credible among the health community. A within-subject design experiment was conducted to pilot testing the feasibility and efficacy of Reiki to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a63d496b5108c3387bab2d64f54a8f57
https://pubmed.ncbi.nlm.nih.gov/31046557
https://pubmed.ncbi.nlm.nih.gov/31046557
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
In this work, we study helix spacelike and timelike surfaces in the Lorentzian Berger sphere $\s_{\varepsilon}^3$, that is the three-dimensional sphere endowed with a $1$-parameter family of Lorentzian metrics, obtained by deforming the round metric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e2b7744c1bc1b55e0fc6d61b084bbf9
http://arxiv.org/abs/1705.10090
http://arxiv.org/abs/1705.10090
Autor:
Elisabeth Remm, Paola Piu
Publikováno v:
Archivum Mathematicum. :387-398
Flag manifolds are in general not symmetric spaces. But they are provided with a structure of $\mathbb{Z}_2^k$-symmetric space. We describe the Riemannian metrics adapted to this structure and some properties of reducibility. We detail for the flag m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dabf1d077a32961e3085d057c418cb8c
https://doi.org/10.5817/am2012-5-387
https://doi.org/10.5817/am2012-5-387
Autor:
Paola Piu, Maria Manuela Profir
Publikováno v:
Annals of the Alexandru Ioan Cuza University - Mathematics. 57:361-376
On the Three-Dimensional Homogenous SO(2)-Isotropic Riemannian Manifolds In this paper we consider some properties of the three-dimensional homogenous SO(2)-isotropic Riemannian manifolds. In particular, we determine the geodesics, the totally geodes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5726c8008e2e256a9ce9ee592b8e4b1e
https://doi.org/10.2478/v10157-011-0032-1
https://doi.org/10.2478/v10157-011-0032-1
Autor:
Paola Piu, Amine Hadjar
We show that $\phi$-invariant submanifolds of metric contact pairs with orthogonal characteristic foliations make constant angles with the Reeb vector fields. Our main result is that for the normal case such submanifolds of dimension at least $2$ are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78bd3cbfd5140e51bb3b2ca17c07f741
http://arxiv.org/abs/1509.00994
http://arxiv.org/abs/1509.00994
Publikováno v:
Mediterranean Journal of Mathematics. 3:449-465
In this article we consider the Euler-Lagrange method associated to a suitable bilagrangian to study biharmonic curves of a Riemannian manifold. We apply this method to characterize biharmonic curves of the three-dimensional Lie group Sol. We also cl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74ba170cc72492165d24e96018aa1079
https://doi.org/10.1007/s00009-006-0090-x
https://doi.org/10.1007/s00009-006-0090-x
Publikováno v:
Acta Mathematica Sinica, English Series. 22:1603-1612
We give a general setting for constructing a Weierstrass representation formula for simply connected minimal surfaces in a Riemannian manifold. Then, we construct examples of minimal surfaces in the three dimensional Heisenberg group and in the produ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a801604ccc4d03cc5f0b9d2b4a7fa841
https://doi.org/10.1007/s10114-005-0637-y
https://doi.org/10.1007/s10114-005-0637-y