Results 91 to 100 of about 976,099 (318)

The Vertex-Rainbow Index of A Graph

open access: yesDiscussiones Mathematicae Graph Theory, 2016
The k-rainbow index rxk(G) of a connected graph G was introduced by Chartrand, Okamoto and Zhang in 2010. As a natural counterpart of the k-rainbow index, we introduce the concept of k-vertex-rainbow index rvxk(G) in this paper.
Mao Yaping
doaj   +1 more source

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

open access: yesFEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani   +4 more
wiley   +1 more source

Generalized Rainbow Connection of Graphs and their Complements

open access: yesDiscussiones Mathematicae Graph Theory, 2018
Let G be an edge-colored connected graph. A path P in G is called ℓ-rainbow if each subpath of length at most ℓ + 1 is rainbow. The graph G is called (k, ℓ)-rainbow connected if there is an edge-coloring such that every pair of distinct vertices of G is ...
Li Xueliang   +3 more
doaj   +1 more source

Poly[aqua(μ1,1-azido)(μ-3H-1,2,3-triazolo[4,5-b]pyridin-3-olato)cobalt(II)]

open access: yesActa Crystallographica Section E, 2010
In the title compound, [Co(C5H3N4O)(N3)(H2O)]n, the cobalt ion is coordinated by three N atoms of two organic ligands, two N atoms of two azide anions and one water molecule in a distorted octahedral geometry.
Jiong-Peng Zhao, Fu-Chen Liu
doaj   +1 more source

A theorem on n-connected graphs

open access: yesJournal of Combinatorial Theory, 1969
AbstractThe following result is proved: Every finite n-connected graph G contains either a vertex of valency n or an edge e such that the graph arising from G by the deletion of e remains n-connected.
openaire   +1 more source

Gauged N=3, D=4 supergravity: A new web of marginally connected vacua [PDF]

open access: hybrid, 2022
Pietro Fré   +4 more
openalex   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Discrete Cocompact Subgroups of the Five-Dimensional Connected and Simply Connected Nilpotent Lie Groups

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2009
The discrete cocompact subgroups of the five-dimensional connected, simply connected nilpotent Lie groups are determined up to isomorphism. Moreover, we prove if G = N × A is a connected, simply connected, nilpotent Lie group with an Abelian factor A ...
Amira Ghorbel, Hatem Hamrouni
doaj   +1 more source

NOTE ON HOMOTOPY NORMALITY AND THE n-CONNECTED FIBER SPACE

open access: yesKyushu Journal of Mathematics, 2001
An \(H\)-map \(i:Y\to X\) of simply connected homotopy associative \(H\)-spaces is called mod \(p\) homotopy normal, if \(c_X(X_{(p)} \times i(Y_{(p)}))\) can be deformed into \(i(Y_{(p)})\). Here \(c_X:X \times X\to X\) is the commutator map \((x,y)\mapsto (x\cdot y)\cdot (\sigma(x) \cdot\sigma (y))\) with \(\sigma:X\to X\) a homotopy inversion.
Kudou, Kenji, Yagita, Nobuaki
openaire   +3 more sources

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