Results 61 to 70 of about 11,355 (303)
Attractive strings and five-branes, skew-holomorphic Jacobi forms and moonshine
Journal of High Energy Physics, 2018 We show that certain BPS counting functions for both fundamental strings and strings arising from fivebranes wrapping divisors in Calabi-Yau threefolds naturally give rise to skew-holomorphic Jacobi forms at rational and attractor points in the moduli ...
Miranda C. N. Cheng +5 more
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Michigan Mathematical Journal, 2007 We determine all possible configurations of rational double points on complex normal algebraic K3 surfaces, and on normal supersingular K3 surfaces in characteristic p > 19.
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K3 surfaces, entropy and glue [PDF]
Journal für die reine und angewandte Mathematik (Crelles Journal), 2011 This paper constructs \(K3\) surface automorphisms with small entropy. Let \(F : X \rightarrow X\) be an automorphism of a compact complex surface \(X\). The topological entropy \(h(F )\) is determined by the spectral radius of \(F^*\) acting on \(H^\bullet (X)\). Indeed, \(h(F ) = \log p(F^* |H^2 (X))\). If \(h(F ) > 0\), then a minimal model for \(X\)
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Diophantine triples and K3 surfaces
Journal of Number Theory, 2022 A Diophantine $m$-tuple with elements in the field $K$ is a set of $m$ non-zero (distinct) elements of $K$ with the property that the product of any two distinct elements is one less than a square in $K$. Let $X: (x^2-1)(y^2-1)(z^2-1)=k^2,$ be a threefold.
Matija Kazalicki, Bartosz Naskręcki
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Advanced Materials, EarlyView.Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje +7 more
wiley +1 more source
K3 mirror symmetry, Legendre family and Deligne's conjecture for the Fermat quartic
Nuclear Physics B, 2021 In this paper, we will study the connections between the mirror symmetry of K3 surfaces and the geometry of the Legendre family of elliptic curves. We will prove that the mirror map of the Dwork family is equal to the period map of the Legendre family ...
Wenzhe Yang
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High Charge Carrier Mobility in Non‐Conjugated 3D Covalent Organic Frameworks
Advanced Materials, EarlyView.A non‐conjugated 3D COF constructed via boronate ester linkages from tetraphenylene and pyrene‐based monomers is reported, which exhibits a high charge carrier mobility of 14 ± 1 cm2 V−1 s−1. ABSTRACT π‐Conjugation, π–π stacking, and long‐range order play a central role in determining charge transport efficiency in organic materials.
Joaquín Almarza +11 more
wiley +1 more source
Switchable Magnonic Crystals Based on Spin Crossover/CrSBr Heterostructures
Advanced Materials, EarlyView.Multiscale modeling is employed to investigate the functionality of a light‐controlled, tunable magnonic crystal based on spin‐crossover Fe‐pz molecules integrated with a monolayer of CrSBr. Ab initio simulations confirm that the molecules remain functional on the CrSBr surface, while a semiclassical elastic model demonstrates that light‐induced ...
Andrei Shumilin +4 more
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Complex Manifolds, 2023 Let XX be a simple normal crossing (SNC) compact complex surface with trivial canonical bundle which includes triple intersections. We prove that if XX is dd-semistable, then there exists a family of smoothings in a differential geometric sense. This can
Doi Mamoru, Yotsutani Naoto
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Families of K3 surfaces. [PDF]
, 2002 by Sheng Mao.Thesis (M.Phil.)--Chinese University of Hong Kong, 2002.Includes bibliographical references (leaves 49-51).Abstracts in English and Chinese.Chapter 1 --- What Is K3 Surface? --- p.2Chapter 1.1 --- Algebraic K3 Surface --- p.2Chapter 1.1.1 -
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