Results 1 to 10 of about 1,425,525 (149)

Rainbow Connection Number and Connectivity [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2012
The rainbow connection number, $rc(G)$, of a connected graph $G$ is the minimum number of colors needed to color its edges, so that every pair of vertices is connected by at least one path in which no two edges are colored the same. Our main result is that $rc(G)\leq \lceil\frac{n}{2}\rceil$ for any 2-connected graph with at least three vertices.
Xueliang Li 0001   +4 more
openaire   +3 more sources

Connected locally connected toposes are path-connected [PDF]

open access: yesTransactions of the American Mathematical Society, 1986
A conjecture of A. Joyal is proved, which states that, in contrast to topological spaces, toposes which are connected and locally connected are also path-connected. The reason for this phenomenon is the triviality of cardinality considerations in the topos-theoretic setting; any inhabited object pulls back to an enumerable object under some open ...
Moerdijk, I., Wraith, G. C.
openaire   +1 more source

Functional connectivity changes and their relationship with clinical disability and white matter integrity in patients with relapsing-remitting multiple sclerosis [PDF]

open access: yes, 2015
Background and objective: To define the pathological substrate underlying disability in multiple sclerosis by evaluating the relationship of resting-state functional connectivity with microstructural brain damage, as assessed by diffusion tensor maging ...
Filippini, N   +8 more
core   +1 more source

Connection, Connection, Connection… [PDF]

open access: yesScience, 2013
[Read the Introduction to this Special Section][1] ![Figure][2] CREDIT: VAN J. WEDEEN, AAPO NUMMENMAA, RUOPENG WANG, AND LAWRENCE L. WALD/MARTINOS CENTER FOR BIOMEDICAL IMAGING, MASSACHUSETTS GENERAL HOSPITAL There are approximately 86 billion neurons in the human brain.
openaire   +1 more source

Early affective changes and increased connectivity in preclinical Alzheimer's disease. [PDF]

open access: yes, 2018
IntroductionAffective changes precede cognitive decline in mild Alzheimer's disease and may relate to increased connectivity in a "salience network" attuned to emotionally significant stimuli.
Bilgel, Murat   +7 more
core   +1 more source

Comparative measurement of the breakup length of liquid jets in airblast atomisers using optical connectivity, electrical connectivity and shadowgraphy [PDF]

open access: yes, 2016
A comparative examination of the optical connectivity, electrical connectivity and shadowgraphy techniques for the measurement of the break-up length of atomising liquid jets from a co-axial airblast atomiser is presented.
Charalampous, G   +2 more
core   +1 more source

Connected and connectivity multifunctions [PDF]

open access: yesProceedings of the American Mathematical Society, 1977
Conditions are given under which multifunctions which preserve connected sets will have a connected graph.
openaire   +2 more sources

The Theory of Connections: Connecting Points [PDF]

open access: yesMathematics, 2017
This study introduces a procedure to obtain all interpolating functions, y = f ( x ) , subject to linear constraints on the function and its derivatives defined at specified values. The paper first shows how to express these interpolating functions passing through a single point in three distinct ways: linear, additive, and rational. Then, using
openaire   +4 more sources

Complementary network-based approaches for exploring genetic structure and functional connectivity in two vulnerable, endemic ground squirrels [PDF]

open access: yes, 2017
The persistence of small populations is influenced by genetic structure and functional connectivity. We used two network-based approaches to understand the persistence of the northern Idaho ground squirrel (Urocitellus brunneus) and the southern Idaho ...
Adi Barocas   +15 more
core   +3 more sources

Immunization of complex networks [PDF]

open access: yes, 2002
Complex networks such as the sexual partnership web or the Internet often show a high degree of redundancy and heterogeneity in their connectivity properties. This peculiar connectivity provides an ideal environment for the spreading of infective agents.
Pastor-Satorras, Romualdo   +1 more
core   +2 more sources

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