Results 41 to 50 of about 388,814 (186)

Zero Waste––Zero Justice?

open access: yesEngaging Science, Technology, and Society, 2020
Plastic is slowly covering the earth, accumulating in oceans, soil, air, and human and non-human bodies. In the face of this catastrophe, zero waste activists call upon us for action, detailing, how we, too, can change our lifestyle to eliminate plastic waste and save the planet.
RUTH MÜLLER, SARAH SCHÖNBAUER
openaire   +3 more sources

INEQUALITIES CONCERNING B-OPERATORS

open access: yesПроблемы анализа, 2016
Let P_n be the class of polynomials of degree at most n. Rahman introduced the class B_n of operators B that map P_n into itself. In this paper we prove some results concerning such operators and thereby obtain generalizations of some well known ...
W. M. Shah, A. Liman
doaj   +1 more source

Zeros of the Partition Function and Pseudospinodals in Long-Range Ising Models

open access: yes, 2003
The relation between the zeros of the partition function and spinodal critical points in Ising models with long-range interactions is investigated. We find the spinodal is associated with the zeros of the partition function in four-dimensional complex ...
A.M. Ferrenberg   +18 more
core   +1 more source

Transcendentality of zeros of higher dereivatives of functions involving Bessel functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1995
C.L. Siegel established in 1929 [Ges. Abh., v.1, pp. 209-266] the deep results that (i) all zeros of Jv(x) and J′v(x) are transcendental when v is rational, x≠0, and (ii) J′v(x)/Jv(x) is transcendental when v is rational and x algebraic.
Lee Lorch, Martin E. Muldoon
doaj   +1 more source

Statistics or biology: the zero-inflation controversy about scRNA-seq data

open access: yesGenome Biology, 2022
Researchers view vast zeros in single-cell RNA-seq data differently: some regard zeros as biological signals representing no or low gene expression, while others regard zeros as missing data to be corrected.
Ruochen Jiang   +3 more
doaj   +1 more source

REFINEMENT OF ERD ¨OS-LAX INEQUALITY FOR N-OPERATOR

open access: yesПроблемы анализа
Let 𝒫_𝑛 be the space of all polynomials of degree less than or equal to 𝑛. In this paper, we establish a refinement of Erd¨os-Lax inequality in which the classical derivative (as an operator on 𝒫_𝑛) is replaced by a 𝐵𝑛 operator.
F. A. Bhat
doaj   +1 more source

Zeros of Green functions in topological insulators

open access: yesPhysical Review Research, 2022
This study demonstrates that the zeros of the diagonal components of Green functions are key quantities that can detect noninteracting topological insulators. We show that zeros of the Green functions traverse the band gap in the topological phases.
Takahiro Misawa, Youhei Yamaji
doaj   +1 more source

Zeros of Bessel function derivatives

open access: yes, 2016
We prove that for $\nu>n-1$ all zeros of the $n$th derivative of Bessel function of the first kind $J_{\nu}$ are real and simple. Moreover, we show that the positive zeros of the $n$th and $(n+1)$th derivative of Bessel function of the first kind $J_{\nu}
Baricz, Árpád   +2 more
core   +1 more source

Spectral Analysis of Certain Schrödinger Operators

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2012
The J-matrix method is extended to difference and q-difference operators and is applied to several explicit differential, difference, q-difference and second order Askey-Wilson type operators.
Mourad E.H. Ismail, Erik Koelink
doaj   +1 more source

Refinements of inequalities on extremal problems of polynomials

open access: yesOpen Mathematics
Let H(z) be a polynomial of degree n, and for any complex number α, let D α H(z) = nH(z) + (α − z)H′(z) denote the polar derivative of H(z) with respect to α.
Devi Maisnam Triveni   +2 more
doaj   +1 more source

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