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Some Remarks on Linear Ordinary Quasi-Differential Expressions

Proceedings of the London Mathematical Society, 1987
This paper is concerned with the relationship between ordinary linear quasi-differential expressions, defined in terms of locally Lebesgue integrable coefficients given on an interval of the real line, and the 'classical' differential expressions with smooth (differentiable to certain prescribed orders) coefficients.
Everitt, W. N., Race, D.
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The Ins and Outs of ‘Schizophrenia’: Considering Diagnostic Terms as Ordinary Linguistic Expressions

Journal of Medical Humanities, 2020
Diagnostic terms in psychiatry like 'schizophrenia' and 'bipolar disorder' are deeply contested in the professional community, by mental health activists and the public. In this paper, we provide a theoretical framework for considering diagnostic terms as ordinary linguistic expressions and illustrate this approach by a corpus linguistic analysis of ...
Maatz, Anke, Ilg, Yvonne
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Pointwise convergence of eigenfunction expansions, associated with a pair of ordinary differential expressions

Proceedings of the Royal Society of Edinburgh: Section A Mathematics, 1984
SynopsisFor the differential equation Lf = λMf on an open interval of ℝ, a theory in terms of relations in a Hilbert space associated with M was developed in a paper by Coddington and de Snoo, and eigenfunction expansions were derived in a paper by Dijksma and de Snoo. In the case of a regular problem on a compact interval, pointwise convergence of the
CODDINGTON, EA, DIJKSMA, A, DESNOO, HSV
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On some properties of matrices associated with linear ordinary quasi-differential expressions

Proceedings of the Royal Society of Edinburgh: Section A Mathematics, 1984
SynopsisIn the general theory of ordinary linear quasi-differential equations, the set of Shin–Zettl matrices plays an important role. This paper displays certain properties of these matrices and their behaviour under a special form of transformation. Essentially, the problems can be considered within the framework of linear algebra.
Everitt, W. N., Key, Jennifer D.
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Limit-Point Criteria For Not Necessarily Symmetric Ordinary Differential Expressions

Results in Mathematics, 1991
Sufficient conditions on the coefficients for \(M\) to be in the limit- point case are found. Here \(M\) is a not necessarily symmetric (formally selfadjoint) ordinary differential expression. These conditions are found by applying known results to powers of the symmetric case \(M^ +M\), where \(M^ +\) is the adjoint expression.
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On Certain Ordinary Differential Expressions and Associated Integral Inequalities

1976
Publisher Summary This chapter focuses on certain ordinary differential expressions and associated integral inequalities. The inequalities considered provide an extension of this type of estimate to second-order expressions with unbounded coefficients.
WN Everitt, M Giertz
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On integral inequalities associated with ordinary regular differential expressions

1978
Publisher Summary This chapter analyzes integral inequalities associated with ordinary regular differential expressions. The discussion begins with considering a specific integral inequality ∫{ p | f' | 2 + q | f | 2 } ≥ μ ∫ w | f | 2 ( f ∈ D ), where p , q , and w are real-valued coefficients on the closed bounded interval [ a , b
R.J. Amos, W.N. Everitt
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Non-Ordinary Experiences of Consciousness: Expressions of Our True Nature

SSRN Electronic Journal, 2019
Aims of this work o Breaking a series of taboos about many experiences considered impossible or simple suggestions and/or hallucinations caused by alterations of the neurological or psychological functioning. o To know these experiences with reference to the evidence obtained from scientific research conducted at international level and by our ...
Enrico Facco   +2 more
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