Results 11 to 20 of about 735,801 (358)

Occupancy fraction, fractional colouring, and triangle fraction [PDF]

open access: yesJournal of Graph Theory, 2021
13 ...
Davies, Ewan   +3 more
openaire   +4 more sources

Fractional Hypocoercivity [PDF]

open access: yesCommunications in Mathematical Physics, 2022
This paper is devoted to kinetic equations without confinement. We investigate the large time behaviour induced by collision operators with fat tailed local equilibria. Such operators have an anomalous diffusion limit. In the appropriate scaling, the macroscopic equation involves a fractional diffusion operator so that the optimal decay rate is ...
Bouin, Emeric   +2 more
openaire   +3 more sources

Fractional free space, fractional lenses, and fractional imaging systems [PDF]

open access: yesJournal of the Optical Society of America A, 2003
Continuum extensions of common dual pairs of operators are presented and consolidated, based on the fractional Fourier transform. In particular, the fractional chirp multiplication, fractional chirp convolution, and fractional scaling operators are defined and expressed in terms of their common nonfractional special cases, revealing precisely how they ...
Sümbül, U., Ozaktas, H., M.
openaire   +3 more sources

Fractional coalescent [PDF]

open access: yesProceedings of the National Academy of Sciences, 2019
An approach to the coalescent, the fractional coalescent ( f -coalescent), is introduced. The derivation is based on the discrete-time Cannings population model in which the variance of the number of ...
Mashayekhi, Somayeh, Beerli, Peter
openaire   +2 more sources

FRACTIONAL SUPERSYMMETRY [PDF]

open access: yesModern Physics Letters A, 1995
A symmetry between bosonic coordinates and some Grassmannian-type coordinates is presented. Commuting two of these Grassmannian-type variables results in an arbitrary phase factor (not just a minus sign). This symmetry is also realized at the level of the field theory.
openaire   +2 more sources

Fractional Coins and Fractional Derivatives [PDF]

open access: yesAbstract and Applied Analysis, 2013
This paper discusses the fundamentals of negative probabilities and fractional calculus. The historical evolution and the main mathematical concepts are discussed, and several analogies between the two apparently unrelated topics are established. Based on the new conceptual perspective, some experiments are performed shading new light into possible ...
openaire   +5 more sources

Fractional eigenvalues [PDF]

open access: yesCalculus of Variations and Partial Differential Equations, 2013
We study a non-local eigenvalue problem related to the fractional Sobolev spaces for large values of p and derive the limit equation as p goes to infinity. Its viscosity solutions have many interesting properties and the eigenvalues exhibit a strange behaviour.
Lindgren, Erik, Lindqvist, Peter
openaire   +2 more sources

Comparative Production of Bio-Oil from In Situ Catalytic Upgrading of Fast Pyrolysis of Lignocellulosic Biomass

open access: yesEnergies, 2023
Catalytic upgrading of fast pyrolysis bio-oil from two different types of lignocellulosic biomass was conducted using an H-ZSM-5 catalyst at different temperatures.
Ali Abdulkhani   +6 more
doaj   +1 more source

Nitrogen Fractionation in External Galaxies [PDF]

open access: yes, 2019
In star forming regions in our own Galaxy, the 14N/15N ratio is found to vary from $\sim$ 100 in meteorites, comets and protoplanetary disks up to $\sim$ 1000 in pre-stellar and star forming cores, while in external galaxies the very few single-dish ...
Fontani, Francesco   +3 more
core   +3 more sources

A robust fractionation method for protein subcellular localization studies in Escherichia coli

open access: yesBioTechniques, 2019
Fractionation in Gram-negative bacteria is used to identify the subcellular localization of proteins, in particular the localization of exported recombinant proteins.
Gilles Malherbe   +2 more
doaj   +1 more source

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