Zobrazeno 1 - 10
of 5 538
pro vyhledávání: '"Bettiol A."'
We prove two results on convex subsets of Euclidean spaces invariant under an orthogonal group action. First, we show that invariant spectrahedra admit an equivariant spectrahedral description, i.e., can be described by an equivariant linear matrix i
Externí odkaz:
http://arxiv.org/abs/2408.03231
Autor:
Bettiol, Renato G., Piccione, Paolo
We prove that 3-dimensional ellipsoids invariant under a 2-torus action contain infinitely many distinct immersed minimal tori, with at most one exception. These minimal tori bifurcate from the 2-torus orbit of largest volume at a dense set of eccent
Externí odkaz:
http://arxiv.org/abs/2309.13758
Autor:
Luis Felipe Scarabelot, Jesem Douglas Yamall Orellana, Viviane Cunha Cardoso, Marco Antonio Barbieri, Ricardo Carvalho Cavalli, Heloisa Bettiol, Bernardo Lessa Horta, Cristina Marta Del-Ben
Publikováno v:
BMC Public Health, Vol 24, Iss 1, Pp 1-12 (2024)
Abstract Background In Brazil, the prevalence of mental disorders is heterogeneous, with most studies conducted in large cities with high population density. This study aimed to assess the prevalence of mental disorders and psychiatric comorbidities
Externí odkaz:
https://doaj.org/article/803cf7f8606b40199e40049b948e4dd2
Autor:
Ru, Shihao, Jiang, Zhengzhi, Liang, Haidong, Kenny, Jonathan, Cai, Hongbing, Lyu, Xiaodan, Cernansky, Robert, Zhou, Feifei, Yang, Yuzhe, Watanabe, Kenji, Taniguch, Takashi, Li, Fuli, Seng, Koh Teck, Liu, Xiaogang, Jelezko, Fedor, Bettiol, Andrew A., Gao, Weibo
Nuclear spin polarization plays a crucial role in quantum information processing and quantum sensing. In this work, we demonstrate a robust and efficient method for nuclear spin polarization with boron vacancy ($\mathrm{V_B^-}$) defects in hexagonal
Externí odkaz:
http://arxiv.org/abs/2306.15960
Publikováno v:
J. Differential Equations 389 (2024), 285-304
We prove nonuniqueness results for complete metrics with constant positive fractional curvature conformal to the round metric on $S^n \setminus S^k$, using bifurcation techniques. These are singular (positive) solutions to a non-local equation with c
Externí odkaz:
http://arxiv.org/abs/2302.11073
Autor:
Han Yan, Hongye Mao, Peixin Qin, Jinhua Wang, Haidong Liang, Xiaorong Zhou, Xiaoning Wang, Hongyu Chen, Ziang Meng, Li Liu, Guojian Zhao, Zhiyuan Duan, Zengwei Zhu, Bin Fang, Zhongming Zeng, Andrew A. Bettiol, Qinghua Zhang, Peizhe Tang, Chengbao Jiang, Zhiqi Liu
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-8 (2024)
Abstract The electrical outputs of single-layer antiferromagnetic memory devices relying on the anisotropic magnetoresistance effect are typically rather small at room temperature. Here we report a new type of antiferromagnetic memory based on the sp
Externí odkaz:
https://doaj.org/article/3d378c63482b4188ad6246b12c3c77fc
We determine linear inequalities on the eigenvalues of curvature operators that imply vanishing of the twisted $\hat A$ genus on a closed Riemannian spin manifold, where the twisting bundle is any prescribed parallel bundle of tensors. These inequali
Externí odkaz:
http://arxiv.org/abs/2212.07548
Autor:
Chirantap Oza, Anuradha Khadilkar, Shital Bhor, Katie Curran, Chitra Sambare, Dipali Ladkat, Alessandra Bettiol, Michael Quinn, Alan Sproule, Colin Willoughby, Tunde Peto
Publikováno v:
Clinical Medicine Insights: Endocrinology and Diabetes, Vol 17 (2024)
Objective: There are very few reports on the prevalence of diabetic retinopathy (DR) in children and youth with type-1 diabetes (T1D). Studies have also found very low rates of referral for DR screening in children and youth with T1D. We conducted th
Externí odkaz:
https://doaj.org/article/66696807d06a4007b49d7f3ff77c8c23
Autor:
Bettiol, Renato G., Lauret, Emilio A.
Publikováno v:
Mat. Contemp. 57 (2023), 23-31
We show that spheres in all dimensions $\geq3$ can be deformed to have diameter larger than the distance between any pair of antipodal points. This answers a question of Yurii Nikonorov.
Comment: Mat. Contemp., to appear
Comment: Mat. Contemp., to appear
Externí odkaz:
http://arxiv.org/abs/2205.05186
Publikováno v:
Selecta Math. (N.S.) 30 (2024), no. 1, Paper No. 7, 29 pp
Following Gromov, a Riemannian manifold is called area-extremal if any modification that increases scalar curvature must decrease the area of some tangent 2-plane. We prove that large classes of compact 4-manifolds, with or without boundary, with non
Externí odkaz:
http://arxiv.org/abs/2205.00543