Results 41 to 50 of about 3,565,508 (299)

Interval graphs and interval orders

open access: yesDiscrete Mathematics, 1985
This paper investigates the connection between interval graphs and interval orders, with special attention to the family of interval orders that agree with or provide representations of an interval graph. Relationships between interval graphs and interval orders that concern the number of lengths required for interval representations and bounds on ...
openaire   +2 more sources

The LexCycle on $\overline{P_{2}\cup P_{3}}$-free Cocomparability Graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2020
A graph $G$ is a cocomparability graph if there exists an acyclic transitive orientation of the edges of its complement graph $\overline{G}$. LBFS$^{+}$ is a variant of the generic Lexicographic Breadth First Search (LBFS), which uses a specific tie ...
Xiao-Lu Gao, Shou-Jun Xu
doaj   +1 more source

Signed interval graphs and bigraphs: A generalization of interval graphs and bigraphs

open access: yesCoRR, 2022
In this paper, we define and characterize signed interval graphs and bigraphs introducing the concept of negative interval. Also we have shown that these classes of graphs are respectively a generalization of well known classes of interval graphs and interval bigraphs.
Ashok Kumar Das, Indrajit Paul
openaire   +2 more sources

Interval Edge-Colorings of Cartesian Products of Graphs I

open access: yesDiscussiones Mathematicae Graph Theory, 2013
A proper edge-coloring of a graph G with colors 1, . . . , t is an interval t-coloring if all colors are used and the colors of edges incident to each vertex of G form an interval of integers.
Petrosyan Petros A.   +2 more
doaj   +1 more source

Coloring problem of signed interval graphs [PDF]

open access: yesTransactions on Combinatorics, 2019
A signed graph $(G,\sigma)$ is a graph‎ ‎together with an assignment of signs $\{+,-\}$ to its edges where‎ ‎$\sigma$ is the subset of its negative edges‎.
Farzaneh Ramezani
doaj   +1 more source

Strong Interval – Valued Pythagorean Fuzzy Soft Graphs

open access: yesRatio Mathematica, 2023
A Strong interval – valued Pythagorean fuzzy soft sets (SIVPFSS) an extending the theory of Interval-valued Pythagorean fuzzy soft set (IVPFSS). Then we Propose Strong interval valued Pythagorean fuzzy soft graphs (SIVPFSGs).
Mohammed Jabarulla Mohamed   +1 more
doaj   +1 more source

A linear time algorithm to compute square of interval graphs and their colouring

open access: yesAKCE International Journal of Graphs and Combinatorics, 2016
The square of a graph G=(V,E), denoted by G2, is a graph on the same vertex set V(G) such that two vertices x and y are adjacent in G2 if and only if there is a path of length one or two between x and y in G.
Satyabrata Paul   +2 more
doaj   +1 more source

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Differential expression of cancer‐related genes supports prediction of poor response to first‐line treatments in T‐ALL pediatric patients with high minimal residual disease

open access: yesMolecular Oncology, EarlyView.
In the present work, we have identified a transcriptional signature based on the differential expression of six genes (BCL2&MAST4, HSH2D&LAT2, METRN&PITPNM2) that would facilitate the early detection of T‐cell acute lymphoblastic leukemia (T‐ALL) patients prone to a poor treatment response and could be implemented at diagnosis, along with other risk ...
Antonio Lahera   +11 more
wiley   +1 more source

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