نتایج جستجو برای: commuting graph

تعداد نتایج: 203969  

2017
Camille Perchoux Julie-Anne Nazare Tarik Benmarhnia Paul Salze Thierry Feuillet Serge Hercberg Franck Hess Mehdi Menai Christiane Weber Hélène Charreire Christophe Enaux Jean-Michel Oppert Chantal Simon

BACKGROUND Active transportation has been associated with favorable health outcomes. Previous research highlighted the influence of neighborhood educational level on active transportation. However, little is known regarding the effect of commuting distance on social disparities in active commuting. In this regard, women have been poorly studied. The objective of this paper was to evaluate the r...

2003
Santanu Dey

Here we study dilations of q-commuting tuples. In [BBD] the authors gave the correspondence between the two standard dilations of commuting tuples and here these results have been extended to q-commuting tuples. We are able to do this when q-coefficients ‘qij ’ are of modulus one. We introduce ‘maximal q-commuting subspace ’ of a n-tuple of operators and ‘standard q-commuting dilation’. Our mai...

M. Azadi Sh. Sahebi

R is called commuting regular ring (resp. semigroup) if for each x,y $in$ R there exists a $in$ R such that xy = yxayx. In this paper, we introduce the concept of commuting $pi$-regular rings (resp. semigroups) and study various properties of them.

Journal: :پژوهش های روستایی 0
احمد پوراحمد استاد دانشکدة جغرافیای دانشگاه تهران اسفندیار زبردست دانشیار دانشکدة هنرهای زیبای دانشگاه تهران مهدی قرخلو دانشیار دانشگاه تهران سید عباس رجائی دانشجوی دکتری دانشگاه تهران، دانشکدة جغرافیا

introduction commuting between urban centers and rural areas is a phenomenon that observed in all countries with different social and economic structure. commuting is a new phenomenon in move of population that emerged with metropolis development. this phenomenon is different with other population movement. because this move does not change in residential place, population work in other place. ...

Journal: :Indiana University Mathematics Journal 2021

We establish the tracial stability of a certain class graph products C*-algebras. This result involves development pincushion finite graphs. then apply this in two ways. The first application yields selective version Lin's Theorem for almost commuting operators. second addresses some approximation properties right-angled Artin groups. In particular, we show that full C*-algebra any group is qua...

2012
S. Krishnamoorthy R. Arul Doss

We introduce the notion of commuting regular Γsemiring and discuss some properties of commuting regular Γsemiring. We also obtain a necessary and sufficient condition for Γ-semiring to possess commuting regularity. Keywords—Commutative Γ-semiring, Idempotent Γ-semiring, Rectangular Γ-band, Commuting regular Γ-semiring, Clifford Γsemiring.

2010
Kobe Boussauw Tijs Neutens Frank Witlox

This paper focuses on regional variations in commuting trip lengths by calculating minimum (required) commuting distances, along with excess commuting rates. The study contributes to the excess commuting research framework from a regional perspective, both by stressing the specific characteristics of urban networks with overlapping commute areas, and by putting forward an alternative method for...

Journal: :Internet Mathematics 2005
Stephen P. Boyd Persi Diaconis Pablo A. Parrilo Lin Xiao

We show how to use subgroups of the symmetry group of a reversible Markov chain to give useful bounds on eigenvalues and their multiplicity. We supplement classical representation theoretic tools involving a group commuting with a self-adjoint operator with criteria for an eigenvector to descend to an orbit graph. As examples, we show that the Metropolis construction can dominate a max-degree c...

Journal: :Ergonomics 2012
Achim Elfering Simone Grebner Martina Haller

UNLABELLED This questionnaire study tests cognitive failures as a mediator of the potential influence of mental work demands and conscientiousness on risky commuting. Participants were 104 railway-controllers (19% female). Failure of memory, attention regulation and action execution were assessed with the Workplace Cognitive Failure (WCF) scale. Mental work demands were measured by the Instrume...

2012
MAN DUEN CHOI KENNETH R. DAVIDSON

We define four 3×3 commuting contractions which do not dilate to commuting isometries. However they do satisfy the scalar von Neumann inequality. These matrices are all nilpotent of order 2. We also show that any three 3×3 commuting contractions which are scalar plus nilpotent of order 2 do dilate to commuting isometries.

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