Results 41 to 50 of about 10,755 (178)
Complements and coregularity of Fano varieties
Forum of Mathematics, SigmaWe study the relation between the coregularity, the index of log Calabi–Yau pairs and the complements of Fano varieties. We show that the index of a log Calabi–Yau pair $(X,B)$ of coregularity $1$ is at most $120\lambda ^2$ , where
Fernando Figueroa +3 more
doaj +1 more source
A Generalized Construction of Calabi-Yau Models and Mirror Symmetry
SciPost Physics, 2018 We extend the construction of Calabi-Yau manifolds to hypersurfaces in non-Fano toric varieties, requiring the use of certain Laurent defining polynomials, and explore the phases of the corresponding gauged linear sigma models.
Per Berglund, Tristan Hubsch
doaj +1 more source
Ultralow‐Backscattering Induced Mode Splitting in Chipscale Valley Photonic Topological Cavities
Laser &Photonics Reviews, EarlyView.The proposed in‐situ metrology based on mode splitting quantifies the ultralow backscattering of topological valley edge states at a single sharp corner, demonstrating near‐lossless topological transport (0.09 dB/corner) on a silicon chip. This work provides insight into the robustness of the photonic valley system and shows the great potential of ...
Kaiji Chen +5 more
wiley +1 more source
A decomposition theorem for $\mathbb{Q}$-Fano Kähler–Einstein varieties
Comptes Rendus. MathématiqueLet $X$ be a $\mathbb{Q}$-Fano variety admitting a Kähler–Einstein metric. We prove that up to a finite quasi-étale cover, $X$ splits isometrically as a product of Kähler–Einstein $\mathbb{Q}$-Fano varieties whose tangent sheaf is stable with respect to ...
Druel, Stéphane +2 more
doaj +1 more source
Vector bundles on bielliptic surfaces: Ulrich bundles and degree of irrationality
Mathematische Nachrichten, EarlyView.Abstract This paper deals with two problems about vector bundles on bielliptic surfaces. The first is to give a classification of Ulrich bundles on such surfaces S$S$, which depends on the topological type of S$S$. In doing so, we study the weak Brill–Noether property for moduli spaces of sheaves with isotropic Mukai vector. Adapting an idea of Moretti
Edoardo Mason
wiley +1 more source
Versatile High‐Sensitivity EPR Using Superconducting Spiral Microresonators
Small Methods, EarlyView.A significant sensitivity enhancement in conventional X‐band pulsed EPR is achieved using planar spiral microresonators fabricated from high‐temperature superconducting YBCO. Fully compatible with standard instrumentation, the approach enables high‐fidelity spin control under typical sample conditions.
Gediminas Usevičius +18 more
wiley +1 more source
Mirror symmetry, Tyurin degenerations and fibrations on Calabi-Yau manifolds [PDF]
, 2016 We investigate a potential relationship between mirror symmetry for Calabi-Yau manifolds and the mirror duality between quasi-Fano varieties and Landau-Ginzburg models.
Doran, Charles F. +2 more
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Fano varieties with large Seshadri constants
, 2018 We show that the set of Fano varieties (with arbitrary singularities) whose anticanonical divisors have large Seshadri constants satisfies certain weak and birational boundedness.
Zhuang, Ziquan
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Journal of Mathematical Sciences, 1999 AMSTeX, 13 pages; revised: minor typos ...
openaire +3 more sources
Multiterminal High‐Voltage Direct Current Projects: A Comprehensive Assessment and Future Prospects
High Voltage, EarlyView.ABSTRACT Multiterminal high‐voltage direct current (MT‐HVDC) systems are an important part of modern power systems, addressing the need for bulk power delivery and efficient renewable energy integration. This paper provides a comprehensive overview of recent advances in MT‐HVDC technology, including launched projects and ongoing initiatives.
Mohammad Hossein Mousavi +3 more
wiley +1 more source