Results 11 to 20 of about 120,987 (267)

Transit sets of -point crossover operators

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
-point crossover operators and their recombination sets are studied from different perspectives. We show that transit functions of -point crossover generate, for all , the same convexity as the interval function of the underlying graph.
Manoj Changat   +6 more
doaj   +1 more source

On transitive translation functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1958
The question of when transitive translation functions exist for fiber bundles was raised by W. Hurewicz. The answer this paper supplies is the following. If a bundle over a finite polyhedron has a structural group G with no small subgroups then it has a transitive translation function if and only if it is equivalent in G to an H bundle where H is a ...
openaire   +2 more sources

Scintigraphic Small Intestinal Transit Time and Defaecography in Patients with J-Pouch

open access: yesDiagnostics, 2015
Objective methods for examination of pouch function are warranted for a better understanding of the functional result and treatment of dysfunction. The objective of this study was to evaluate the results of scintigraphic intestinal transit time and ...
Mie Dilling Kjaer   +5 more
doaj   +1 more source

A Note on the Interval Function of a Disconnected Graph

open access: yesDiscussiones Mathematicae Graph Theory, 2018
In this note we extend the Mulder-Nebeský characterization of the interval function of a connected graph to the disconnected case. One axiom needs to be adapted, but also a new axiom is needed in addition.
Changat Manoj   +3 more
doaj   +1 more source

Mott transition with holographic spectral function [PDF]

open access: yesJournal of High Energy Physics, 2018
Abstract We show that the Mott transition can be realized in a holographic model of a fermion with bulk mass, m, and a dipole interaction of coupling strength p. The phase diagram contains gapless, pseudo-gap and gapped phases and the first one can be further divided into four sub-classes.
Seo, Yunseok   +3 more
openaire   +3 more sources

Decompositions of Substochastic Transition Functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1973
Three decompositions of a substochastic transition function are shown to yield substochastic parts. These are the Lebesgue decomposition with respect to a finite measure, the decomposition into completely atomic and continuous parts, and on Rn, a decomposition giving a part with continuous distribution function and a part with discontinuous ...
openaire   +2 more sources

Analysis of a Flexible Transit Network in a Radial Street Pattern

open access: yesJournal of Advanced Transportation, 2020
Traditional transit systems are usually composed of fixed routes and stops, which are suitable in densely populated areas. This paper presents a reformulation of the flexible transit model developed by Nourbakhsh and Ouyang (2012) to adapt it to many low
Hongguo Shi, Mingyao Gao
doaj   +1 more source

Directed Transit Functions

open access: yesResults in Mathematics
Abstract Transit functions were introduced as models of betweenness on undirected structures. Here we introduce directed transit function as the directed analogue on directed structures such as posets and directed graphs. We first show that betweenness in posets can be expressed by means of a simple set of first order axioms.
Arun Anil   +7 more
openaire   +3 more sources

Axiomatic characterization of the interval function of partial cubes and partial Hamming graphs

open access: yesAKCE International Journal of Graphs and Combinatorics
Interval function of a graph is a well-known notion in metric graph theory and the axiomatic characterization using a set of first order axioms of different graph classes is an interesting problem in this area.
Jeny Jacob   +4 more
doaj   +1 more source

Using accessibility measures in transit network design

open access: yesTransport, 2018
Transit planning scenarios may lead to the different Objective Function (OF) values since each scenario has different transit travel times, frequencies and fleet sizes.
Gorkem Gulhan   +2 more
doaj   +1 more source

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