Results 131 to 140 of about 52,586 (291)
Ain Shams Engineering JournalThis article discusses a new integrable wave equation in (3+1)-dimensions that describes shallow water waves. The auto–Bäcklund and Cole-Hopf transformations are constructed by means of the homogeneous balance approach, which results in numerous new ...
Adil Jhangeer +4 more
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A phono-ethnic story of Nigerian English: As told by high vowels
Ampersand, 2019 This study explores the role of dialect-contact among developing L2 phonologies, and the influence of L1 ± ATR system on L2 English tense/lax vowels, using the under-documented Ebira English spoken in Nigeria as an exemplar.
Adeiza Lasisi Isiaka
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Twenty new species of Hieracium sect. Tridentata and H. sect. Foliosa (Asteraceae) from Sweden
Nordic Journal of Botany, EarlyView.Nineteen new, presumably apomictic species of Hieracium sect. Tridentata, namely Hieracium anisodontum, H. bicoloriceps, H. disparifolium, H. ditrichum, H. erectifolium, H. ferox , H. lapsanae, H. luteoviride, H. megaplicatum, H. multifolium, H. paer‐haraldii, H. perpendiculum, H. phaeochlorum, H. prasiniceps, H. semirigidum, H.
Tommy Nilsson, Torbjörn Tyler
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Symmetries in Connection Preserving Deformations
Symmetry, Integrability and Geometry: Methods and Applications, 2011 e wish to show that the root lattice of Bäcklund transformations of the q-analogue of the third and fourth Painlevé equations, which is of type (A_2+A_1)^{(1)}, may be expressed as a quotient of the lattice of connection preserving deformations ...
Christopher M. Ormerod
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Bargmann Type Systems for the Generalization of Toda Lattices
Journal of Applied Mathematics, 2014 Under a constraint between the potentials and eigenfunctions, the nonlinearization of the Lax pairs associated with the discrete hierarchy of a generalization of the Toda lattice equation is proposed, which leads to a new symplectic map and a class of ...
Fang Li, Liping Lu
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Nordic Journal of Botany, EarlyView.We report on two species of Strobilanthes Blume. Strobilanthes panichanga (Nees) T.Anderson has been rediscovered in the Dima Hasao district of Assam, India, after a very long gap of 150 years, and Strobilanthes parryorum C.E.C.Fisch has been discovered for the first time in Assam, India.
Kapil Kumar Kemprai, Souravjyoti Borah
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Integrable Couplings and Two-Dimensional Unital Algebras
AxiomsThe paper aims to demonstrate that a linear expansion in a unital two-dimensional algebra can generate integrable couplings, proposing a novel approach for their construction. The integrable couplings presented encompass a range of perturbation equations
Wen-Xiu Ma
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The Delsarte-Darboux type binary transformations, their differential-geometric and operator structure with applications. Part 1 [PDF]
Opuscula Mathematica, 2006 The structure properties of multidimensional Delsarte-Darboux transmutation operators in parametric functional spaces are studied by means of differential-geometric and topological tools.
Yarema A. Prykarpatsky +1 more
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Direct linearization approach to discrete integrable systems associated with ℤ𝒩 graded Lax pairs. [PDF]
Proc Math Phys Eng Sci, 2020 Fu W.
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Nordic Journal of Botany, EarlyView.Ouratea cidiana (Ochnaceae) is a microendemic shrub species from the Brazilian Amazonia, occurring along the banks of the Trombetas River and restricted to the Cachoeira Porteira region, in western Pará State. Since the original collection nearly forty years ago, no additional records have been made, which is concerning given the continuous decline in ...
Clebiana de Sá Nunes +4 more
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