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The Intersection Problem for Finite Semigroups [PDF]

open access: yesInternational Journal of Foundations of Computer Science, 2018
The intersection problem for finite semigroups asks, given a set of regular languages, represented by recognizing morphisms to finite semigroups, whether there exists a word contained in their intersection. In previous work, it was shown that is problem is [Formula: see text]-complete. We introduce compressibility measures as a useful tool to classify
openaire   +3 more sources

Singular Points of Curves

open access: yesМоделирование и анализ информационных систем, 2018
In this paper, we consider the key problem of geometric modeling, connected with the construction of the intersection curves of surfaces. Methods for constructing the intersection curves in complex cases are found: by touching and passing through ...
Artem D. Uvarov
doaj   +1 more source

Session Types = Intersection Types + Union Types [PDF]

open access: yes, 2011
We propose a semantically grounded theory of session types which relies on intersection and union types. We argue that intersection and union types are natural candidates for modeling branching points in session types and we show that the resulting ...
Luca Padovani, Padovani, Luca
core   +1 more source

Optimal Coordination and Control of Connected and Automated Vehicles at Intersections via Mixed Integer Linear Programming

open access: yesSICE Journal of Control, Measurement, and System Integration, 2019
This paper addresses the crossing order problem for connected and automated vehicles at an intersection where the problem can lead to higher traffic congestion, especially in high traffic density.
Mohamad Hafizulazwan Mohamad Nor   +1 more
doaj   +1 more source

Automatic Intersection Extraction Method for Urban Road Networks Based on Trajectory Intersection Points

open access: yesApplied Sciences, 2022
Automatic intersection identification and extraction are an important foundation for urban road network updates and traffic network analysis and modeling.
Lei Gao, Lu Wei, Jian Yang, Jinhong Li
doaj   +1 more source

Distributed Ellipsoidal Intersection Fusion Estimation for Multi-Sensor Complex Systems

open access: yesSensors, 2022
This paper investigates the problem of distributed ellipsoidal intersection (DEI) fusion estimation for linear time-varying multi-sensor complex systems with unknown input disturbances and measurement data transmission delays.
Peng Zhang   +3 more
doaj   +1 more source

The 'Cross" Rectangle Intersection Problem [PDF]

open access: yesThe Computer Journal, 1995
In this paper we present a solution for a special case of the general rectangle intersection problem that has not been previously considered as a different case. This case, named the 'cross' intersection case, reports the set of these iso-oriented rectangles that intersect a query rectangle but do not enclose it and do not have one of their vertices ...
V. Kapelios   +4 more
openaire   +1 more source

New Numerical Solution for Two Parametric Surfaces Intersection Dragging Problem

open access: yesInternational Journal of Analysis and Applications, 2021
The problem of intersecting two parametric surfaces has been one of the main technical challenges in computer-aided design, computer graphics, solid modeling, and geometrics.
Ramadhan A. M. Alsaidi
doaj  

Problems on Finite Automata and the Exponential Time Hypothesis

open access: yesAlgorithms, 2017
We study several classical decision problems on finite automata under the (Strong) Exponential Time Hypothesis. We focus on three types of problems: universality, equivalence, and emptiness of intersection.
Henning Fernau, Andreas Krebs
doaj   +1 more source

Graph Logics with Rational Relations [PDF]

open access: yesLogical Methods in Computer Science, 2013
We investigate some basic questions about the interaction of regular and rational relations on words. The primary motivation comes from the study of logics for querying graph topology, which have recently found numerous applications.
Pablo Barcelo   +2 more
doaj   +1 more source

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