Results 41 to 50 of about 304 (131)
Ecology and Evolution, Volume 16, Issue 2, February 2026.We investigated both fine‐scale SGS and leaf shape variation in five Fagaceae species (Q. glauca, Q. multinervis, C. tibetana, C. faberi, and C. fargesii) from the genera Quercus and Castanopsis in Wuyishan National Park. We found that Quercus species exhibit stronger fine‐scale SGS than Castanopsis species.
Rongle Wang +6 more
wiley +1 more source
Abstract and Applied Analysis, Volume 2019, Issue 1, 2019., 2019 We define and study C1‐solutions of the Aronsson equation (AE), a second order quasi linear equation. We show that such super/subsolutions make the Hamiltonian monotone on the trajectories of the closed loop Hamiltonian dynamics. We give a short, general proof that C1‐solutions are absolutely minimizing functions.
Pierpaolo Soravia, Ying Hu
wiley +1 more source
Papers in Palaeontology, Volume 12, Issue 1, January/February 2026.Abstract We describe the Hettangian Caenogastropoda and Heterobranchia of the Luxembourg Sandstone Formation, a wedge of clastic sediments deposited along the eastern margin of Paris Basin during the Early Jurassic. Five new genera and 11 new species are erected: Bourguetia bipartita sp. nov., Globularia delsatei sp. nov., Oonia feidtorum sp.
Stefano Monari +3 more
wiley +1 more source
Herz‐Type Hardy Spaces Associated with Operators
Journal of Function Spaces, Volume 2018, Issue 1, 2018., 2018 Suppose L is a nonnegative, self‐adjoint differential operator. In this paper, we introduce the Herz‐type Hardy spaces associated with operator L. Then, similar to the atomic and molecular decompositions of classical Herz‐type Hardy spaces and the Hardy space associated with operators, we prove the atomic and molecular decompositions of the Herz‐type ...
Yan Chai +3 more
wiley +1 more source
Papers in Palaeontology, Volume 10, Issue 4, July/August 2024.Abstract We describe a high‐diversity silicified assemblage of marine molluscs (Pelsa‐Vazzoler Lagerstätte) from the upper Ladinian of the Agordo Dolomites (northeastern Italy). New data on the Triassic rebound, after the end‐Permian mass extinction, constrain it to an interval of relatively stable climatic conditions.
Stefano Dominici +2 more
wiley +1 more source
Estimates on the Bergman Kernels in a Tangential Direction on Pseudoconvex Domains in C3
Abstract and Applied Analysis, Volume 2018, Issue 1, 2018., 2018 Let Ω be a smoothly bounded pseudoconvex domain in C3 and assume that TΩreg(z0)<∞ where z0 ∈ bΩ, the boundary of Ω. Then we get optimal estimates of the Bergman kernel function along some “almost tangential curve” Cb(z0, δ0) ⊂ Ω ∪ {z0}.
Sanghyun Cho, Milan Pokorny
wiley +1 more source
Closed 3‐forms in five dimensions and embedding problems
Journal of the London Mathematical Society, Volume 109, Issue 4, April 2024.Abstract We consider the question if a five‐dimensional manifold can be embedded into a Calabi–Yau manifold of complex dimension 3 such that the real part of the holomorphic volume form induces a given closed 3‐form on the 5‐manifold. We define an open set of 3‐forms in dimension five which we call strongly pseudoconvex, and show that for closed ...
Simon Donaldson, Fabian Lehmann
wiley +1 more source
Subelliptic Poincaré inequalities: the case p < 1
, 2021 We obtain (weighted) Poincaré type inequalities for vector fields satisfying the Hörmander condition for p < 1 under some assumptions on the subelliptic gradient of the function.
Koskela, P., Lu, G., Buckley, S.
core
Singular CR structures of constant Webster curvature and applications
Mathematische Nachrichten, Volume 297, Issue 3, Page 943-961, March 2024.Abstract We consider the sphere S2n+1$\mathbb {S}^{2n+1}$ equipped with its standard contact form. In this paper, we construct explicit contact forms on S2n+1∖S2k+1$\mathbb {S}^{2n+1}\setminus \mathbb {S}^{2k+1}$, which are conformal to the standard one and whose related Webster metrics have constant Webster curvature; in particular, it is positive if ...
Chiara Guidi +2 more
wiley +1 more source
Subelliptic Wave Equations with Log-Lipschitz coefficients
, 2020 In this paper we study the Cauchy problem for the wave equations for sums of squares of left invariant vector fields on compact Lie groups and also for hypoelliptic homogeneous left-invariant differential operators on graded Lie groups (the positive Rockland operators), when the time-dependent propagation speed satisfies a Log-Lipschitz condition.
Torijano, Carlos Andres Rodriguez +1 more
openaire +2 more sources