Results 111 to 120 of about 101,745 (269)

Subgraph Query for Building Service-Based Systems

open access: yesIEEE Access, 2019
Given the broad applications of service-oriented architecture (SOA) in service-oriented software engineering, service-based systems (SBSs) built from existing Web services are becoming increasingly popular.
Jintao Wu   +5 more
doaj   +1 more source

Profinite rigidity for free‐by‐cyclic groups with centre

open access: yesJournal of the London Mathematical Society, Volume 111, Issue 6, June 2025.
Abstract A free‐by‐cyclic group FN⋊ϕZ$F_N\rtimes _\phi \mathbb {Z}$ has non‐trivial centre if and only if [ϕ]$[\phi]$ has finite order in Out(FN)${\rm {Out}}(F_N)$. We establish a profinite rigidity result for such groups: if Γ1$\Gamma _1$ is a free‐by‐cyclic group with non‐trivial centre and Γ2$\Gamma _2$ is a finitely generated free‐by‐cyclic group ...
Martin R. Bridson, Paweł Piwek
wiley   +1 more source

Qubit allocation as a combination of subgraph isomorphism and token swapping

open access: yesProc. ACM Program. Lang., 2019
In 2016, the first quantum processors have been made available to the general public. The possibility of programming an actual quantum device has elicited much enthusiasm. Yet, such possibility also brought challenges.
Marcos Yukio Siraichi   +3 more
semanticscholar   +1 more source

On profinite rigidity amongst free‐by‐cyclic groups I: The generic case

open access: yesProceedings of the London Mathematical Society, Volume 130, Issue 6, June 2025.
Abstract We prove that amongst the class of free‐by‐cyclic groups, Gromov hyperbolicity is an invariant of the profinite completion. We show that whenever G$G$ is a free‐by‐cyclic group with first Betti number equal to one, and H$H$ is a free‐by‐cyclic group which is profinitely isomorphic to G$G$, the ranks of the fibres and the characteristic ...
Sam Hughes, Monika Kudlinska
wiley   +1 more source

Incremental View Maintenance for Deductive Graph Databases Using Generalized Discrimination Networks [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2016
Nowadays, graph databases are employed when relationships between entities are in the scope of database queries to avoid performance-critical join operations of relational databases.
Thomas Beyhl, Holger Giese
doaj   +1 more source

Rigidity of graph products of abelian groups

open access: yes, 2007
We show that if $G$ is a group and $G$ has a graph-product decomposition with finitely-generated abelian vertex groups, then $G$ has two canonical decompositions as a graph product of groups: a unique decomposition in which each vertex group is a ...
Gutierrez, Mauricio, Piggott, Adam
core   +1 more source

Deep Analysis on Subgraph Isomorphism

open access: yes, 2020
Subgraph isomorphism is a well-known NP-hard problem which is widely used in many applications, such as social network analysis and knowledge graph query. Its performance is often limited by the inherent hardness. Several insightful works have been done since 2012, mainly optimizing pruning rules and matching orders to accelerate enumerating all ...
Zeng, Li   +3 more
openaire   +2 more sources

On the Ubiquity of Oriented Double Rays

open access: yesJournal of Graph Theory, Volume 109, Issue 1, Page 62-67, May 2025.
ABSTRACT A digraph H H is called ubiquitous if every digraph that contains arbitrarily many vertex‐disjoint copies of H Florian Gut, Thilo Krill, Florian Reich
wiley   +1 more source

Frequent Subgraph Mining in Outerplanar Graphs [PDF]

open access: yes, 2010
In recent years there has been an increased interest in frequent pattern discovery in large databases of graph structured objects. While the frequent connected subgraph mining problem for tree datasets can be solved in incremental polynomial time, it ...
Horvath, Tamas   +2 more
core   +1 more source

On Rainbow Turán Densities of Trees

open access: yesRandom Structures &Algorithms, Volume 66, Issue 3, May 2025.
ABSTRACT For a given collection 𝒢=(G1,…,Gk) of graphs on a common vertex set V$$ V $$, which we call a graph system, a graph H$$ H $$ on a vertex set V(H)⊆V$$ V(H)\subseteq V $$ is called a rainbow subgraph of 𝒢 if there exists an injective function ψ:E(H)→[k]$$ \psi :E(H)\to \left[k\right] $$ such that e∈Gψ(e)$$ e\in {G}_{\psi (e)} $$ for each e∈E(H)$$
Seonghyuk Im   +3 more
wiley   +1 more source

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