Results 21 to 30 of about 13,653 (313)

The strong 3-rainbow index of some certain graphs and its amalgamation [PDF]

open access: yesOpuscula Mathematica, 2022
We introduce a strong \(k\)-rainbow index of graphs as modification of well-known \(k\)-rainbow index of graphs. A tree in an edge-colored connected graph \(G\), where adjacent edge may be colored the same, is a rainbow tree if all of its edges have ...
Zata Yumni Awanis, A.N.M. Salman
doaj   +1 more source

Facial rainbow edge-coloring of simple 3-connected plane graphs [PDF]

open access: yesOpuscula Mathematica, 2020
A facial rainbow edge-coloring of a plane graph \(G\) is an edge-coloring such that any two edges receive distinct colors if they lie on a common facial path of \(G\).
Július Czap
doaj   +1 more source

Metamagnetics with rainbow colors

open access: yesOptics Express, 2007
A family of coupled nanostrips with varying dimensions is demonstrated exhibiting optical magnetic responses across the whole visible spectrum, from red to blue. We refer to such a phenomenon as rainbow magnetism. The experimental and analytical studies of such structures provide us with a universal building block and a general recipe for producing ...
Cai, Wenshan   +6 more
openaire   +4 more sources

Rainbow Ramsey problems for the Boolean lattice [PDF]

open access: yes, 2020
We address the following rainbow Ramsey problem: For posets $P,Q$ what is the smallest number $n$ such that any coloring of the elements of the Boolean lattice $B_n$ either admits a monochromatic copy of $P$ or a rainbow copy of $Q$.
Chang, Fei-Huang   +6 more
core   +2 more sources

Rainbow Coloring Hardness via Low Sensitivity Polymorphisms [PDF]

open access: yes, 2019
A k-uniform hypergraph is said to be r-rainbow colorable if there is an r-coloring of its vertices such that every hyperedge intersects all r color classes.
Guruswami, Venkatesan, Sandeep, Sai
core   +1 more source

More Colors in a Rainbow [PDF]

open access: yesArchives of Sexual Behavior, 2015
With her sexual configurations theory (SCT), van Anders (2015) wants to solve a number of problems with the current conceptualization of sexual orientation as defined by the sex of the partner(s) one is attracted to and habitually indicated with the Kinsey score varying from completely heterosexual to completely homosexual.
openaire   +4 more sources

High Girth Hypergraphs with Unavoidable Monochromatic or Rainbow Edges

open access: yesDiscussiones Mathematicae Graph Theory, 2022
A classical result of Erdős and Hajnal claims that for any integers k, r, g ≥ 2 there is an r-uniform hypergraph of girth at least g with chromatic number at least k.
Axenovich Maria, Karrer Annette
doaj   +1 more source

Rainbow connection number of amalgamation of some graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2016
Let G be a nontrivial connected graph. For k∈N, we define a coloring c:E(G)→{1,2,…,k} of the edges of G such that adjacent edges can be colored the same. A path P in G is a rainbow path if no two edges of P are colored the same. A rainbow path connecting
D. Fitriani, A.N.M. Salman
doaj   +1 more source

Rainbow edge-coloring and rainbow domination

open access: yesDiscrete Mathematics, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
LeSaulnier, Timothy D., West, Douglas B.
openaire   +1 more source

Rainbow Connectivity Using a Rank Genetic Algorithm: Moore Cages with Girth Six

open access: yesJournal of Applied Mathematics, 2019
A rainbow t-coloring of a t-connected graph G is an edge coloring such that for any two distinct vertices u and v of G there are at least t internally vertex-disjoint rainbow (u,v)-paths.
J. Cervantes-Ojeda   +3 more
doaj   +1 more source

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