Results 1 to 10 of about 283,845 (170)

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

open access: yesJournal of Graph Theory, 2021
Given $\varepsilon>0$, there exists $f_0$ such that, if $f_0 \le f \le Δ^2+1$, then for any graph $G$ on $n$ vertices of maximum degree $Δ$ in which the neighbourhood of every vertex in $G$ spans at most $Δ^2/f$ edges, (i) an independent set of $G$ drawn uniformly at random has at least $(1/2-\varepsilon)(n/Δ)\log f$ vertices in expectation, and (ii)
Ewan Davies   +3 more
openaire   +4 more sources

Acknowledgment to Reviewers of Fractal and Fractional in 2020

open access: yesFractal and Fractional, 2021
Peer review is the driving force of journal development, and reviewers are gatekeepers who ensure that Fractal and Fractional maintains its standards for the high quality of its published papers [...]
Fractal and Fractional Editorial Office
doaj   +1 more source

The Last Fraction of a Fractional Conjecture [PDF]

open access: yesSIAM Journal on Discrete Mathematics, 2010
Reed conjectured that for every $\varepsilon>0$ and every integer $Δ$, there exists $g$ such that the fractional total chromatic number of every graph with maximum degree $Δ$ and girth at least $g$ is at most $Δ+1+\varepsilon$. The conjecture was proven to be true when $Δ=3$ or $Δ$ is even.
Frantisek Kardos   +2 more
openaire   +2 more sources

The pointwise completeness and the pointwise degeneracy of linear discrete-time different fractional order systems [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2020
Necessary and sufficient conditions for the pointwise completeness and the pointwise degeneracy of linear discrete-time different fractional order systems are established. It is shown that if the fractional system is pointwise complete in one step (q = 1)
T. Kaczorek, Ł. Sajewski
doaj   +1 more source

Fractional permissions without the fractions [PDF]

open access: yesProceedings of the 13th Workshop on Formal Techniques for Java-Like Programs, 2011
Fractional permissions are a popular approach to reasoning about programs that use shared-memory concurrency. Abstractly, they provide a way of managing that either multiple readers or one writer thread can access a resource concurrently. Concretely, specification using fractional permissions typically requires the user to pick concrete mathematical ...
Stefan Heule   +3 more
openaire   +1 more source

Acknowledgement to Reviewers of Fractal Fract in 2019

open access: yesFractal and Fractional, 2020
The editorial team greatly appreciates the reviewers who have dedicated their considerable time and expertise to the journal’s rigorous editorial process over the past 12 months, regardless of whether the papers are finally published or not [...]
Fractal and Fractional Editorial Office
doaj   +1 more source

A Physical Phenomenon for the Fractional Nonlinear Mixed Integro-Differential Equation Using a General Discontinuous Kernel

open access: yesFractal and Fractional, 2023
In this study, a fractional nonlinear mixed integro-differential equation (Fr-NMIDE) is presented and has a general discontinuous kernel based on position and time space.
Sharifah E. Alhazmi, Mohamed A. Abdou
doaj   +1 more source

Scaled Conjugate Gradient for the Numerical Simulations of the Mathematical Model-Based Monkeypox Transmission

open access: yesFractal and Fractional, 2023
The current study presents the numerical solutions of a fractional order monkeypox virus model. The fractional order derivatives in the sense of Caputo are applied to achieve more realistic results for the nonlinear model.
Suthep Suantai   +3 more
doaj   +1 more source

Design and Simulation of Sigma-Delta Fractional-N Frequency Synthesizer for WiMAX [PDF]

open access: yesEngineering and Technology Journal, 2008
This paper presents a design and simulation of proposed frequency synthesizer whichcan be used for WiMAX. Design parameters for the proposed fractional-N PLLsynthesizer for WiMAX system are either selected from WiMAX standards oraccording to results of ...
H. T. Ziboon, H.M. Azawi
doaj   +1 more source

Random noise reduction method of complex exploration based on a fractional optimal control network

open access: yes地质科技通报, 2023
In field seismic prospecting, the existence of complex random noise strongly influences the detection of effective reflected signals and imposes adverse effects on the subsequent process of the data.
Wenbo Yang   +3 more
doaj   +1 more source

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