Results 1 to 10 of about 153 (153)
Singular soliton operators and indefinite metrics [PDF]
Bulletin of the Brazilian Mathematical Society, New Series, 2013 LaTex, 34 pages, 3 figures. Some references were corrected. Additional results about decomposition by eigenfunctions of complex singular finite-gap potentials, higher order potentials and non-statiobnary Schrodinger operator were ...
Grinevich, Petr G., Novikov, Sergey P.
openaire +3 more sources
Singularities of discrete improper indefinite affine spheres
Journal of Geometry, 2023 We consider in this paper discrete improper affine spheres based on asymptotic nets. In this context, we distinguish the discrete edges and vertices that must be considered singular. The singular edges can be considered as discrete cuspidal edges, while some of the singular vertices can be considered as discrete swallowtails.
de Vargas, Anderson Reis +1 more
openaire +3 more sources
Singular finite-gap operators and indefinite metrics [PDF]
Russian Mathematical Surveys, 2009 LaTex, 30 pages In the updated version: 3 references added, extensions of the x-space with indefinite metric and the analysis of the Lame potentials are described in more details, relations with Crum transformations are discussed. Discussion of degenerate cases (hyperbolic and trigonometric) and Crum-Darboux transformations is added.
Grinevich, P., Novikov, S.
openaire +2 more sources
Semantic Incorporation in English Singular Indefinites
Journal of Semantics, 2023 Abstract In this paper, we introduce a class of exceptionally narrow-scoping singular indefinites in English (e.g., “Sam drove a car for several years before switching to a truck”), which pattern more closely with what have been termed “weak definites” in the literature (e.g., Poesio, 1994; Carlson et al., 2006) than with regular ...
Sadhwi Srinivas, Kyle Rawlins
openaire +1 more source
Indefinite LQ Problem for Irregular Singular Systems [PDF]
Mathematical Problems in Engineering, 2014 The indefinite LQ problem for irregular singular systems is investigated. Under some general conditions, the optimal control‐state pair is obtained by solving an algebraic Riccati equation. The optimal control is synthesized as state feedback. All the finite poles of the closed‐loop system are located on the left‐half complex plane. An example is given
Qingxiang Fang, Jigen Peng, Feilong Cao
openaire +2 more sources
Brazilian Portuguese noun phrases: An optimality theoretic perspective
Journal of Portuguese Linguistics, 2015 In this paper we examine the nominal system in Brazilian Portuguese (BrP), a challenge to cross-linguistic studies which rely on the generalization that a language that has indefinites should not have bare nouns.
Henriëtte de Swart +1 more
doaj +2 more sources
Constraints on the position and interpretation of bare singular indefinites in Russian
Linguistica, 2016 In this paper, I discuss the distribution of bare singular indefinite nominals in Russian. I argue that these nominal phrases are full-fledged indefinites and can have both specific and non-specific indefinite interpretations.
Olga Borik
doaj +1 more source
Nonlinear singular problems with indefinite potential term [PDF]
Analysis and Mathematical Physics, 2019 We consider a nonlinear Dirichlet problem driven by a nonhomogeneous differential operator plus an indefinite potential. In the reaction we have the competing effects of a singular term and of concave and convex nonlinearities. In this paper the concave term is parametric.
Papageorgiou, Nikolaos S. +2 more
openaire +3 more sources
DELTA: Documentação de Estudos em Lingüística Teórica e Aplicada, 2010 Apresentam-se neste estudo os resultados de investigação em banco de dados de língua falada e escrita e de um experimento psicolinguístico sobre a gramaticalidade de sentenças genéricas com singular nu no português brasileiro.
Roberta Pires de Oliveira +2 more
doaj +1 more source
Revista Linguística, 2018 This paper investigates the referential properties of bare singulars in Brazilian Portuguese. The literature on referentiality on Spanish has claimed that indefinites, but not bare nouns, can establish and introduce new referents in the discourse.
Ohanna Teixeira Barchi Severo
doaj +1 more source