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Evaluating Restricted First-Order Counting Properties on Nowhere Dense Classes and Beyond
- Publication Year :
- 2023
-
Abstract
- It is known that first-order logic with some counting extensions can be efficiently evaluated on graph classes with bounded expansion, where depth-$r$ minors have constant density. More precisely, the formulas are $\exists x_1 ... x_k \#y \varphi(x_1,...,x_k, y)>N$, where $\varphi$ is an FO-formula. If $\varphi$ is quantifier-free, we can extend this result to nowhere dense graph classes with an almost linear FPT run time. Lifting this result further to slightly more general graph classes, namely almost nowhere dense classes, where the size of depth-$r$ clique minors is subpolynomial, is impossible unless FPT=W[1]. On the other hand, in almost nowhere dense classes we can approximate such counting formulas with a small additive error. Note those counting formulas are contained in FOC({
- Subjects :
- FOS: Computer and information sciences
Computer Science - Logic in Computer Science
Computer Science - Computational Complexity
Discrete Mathematics (cs.DM)
Computer Science - Data Structures and Algorithms
Data Structures and Algorithms (cs.DS)
Computational Complexity (cs.CC)
Logic in Computer Science (cs.LO)
Computer Science - Discrete Mathematics
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....23bdba527ec6c082a414ed18cd8f80f7