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    Article

    On Induction Principles for Partial Orders

    Various forms of mathematical induction (induction for natural numbers, transfinite induction, structural induction, well-founded induction, Noetherian induction, etc.) are applicable to domains with some kind...

    Ievgen Ivanov in Logica Universalis (2022)

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    Chapter and Conference Paper

    On Induction Principles for Diamond-Free Partial Orders

    We propose a formulation of an induction principle for diamond-free partial orders, which can be considered as a generalization of one of the variants of the real induction principle. This principle may be use...

    Ievgen Ivanov in Information and Communication Technologies… (2021)

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    Chapter and Conference Paper

    Expressibility in the Kleene Algebra of Partial Predicates with the Complement Composition

    In the paper we investigate the expressibility of partial predicates in the Kleene algebra extended with the composition of predicate complement and give a necessary and sufficient condition of this expressibi...

    Ievgen Ivanov, Mykola Nikitchenko in Information and Communication Technologies… (2020)

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    Chapter and Conference Paper

    Inference Rules for the Partial Floyd-Hoare Logic Based on Composition of Predicate Complement

    Classical Floyd-Hoare logic is sound when total pre- and post-conditions are considered. In the case of partial conditions (predicates) the logic becomes unsound. This situation may be corrected by introducing...

    Ievgen Ivanov, Mykola Nikitchenko in Information and Communication Technologies… (2019)

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    Chapter and Conference Paper

    On Formalization of Semantics of Real-Time and Cyber-Physical Systems

    In the article we describe theoretical foundations of a framework for formalizing semantics of real-time and cyber-physical systems in interactive theorem proving environments. The framework is based on viewi...

    Ievgen Ivanov, Taras Panchenko in Advances in Computer Science for Engineeri… (2019)

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    Chapter and Conference Paper

    Formalization of the Nominative Algorithmic Algebra in Mizar

    We describe a formalization of the nominative algorithmic algebra in the Mizar proof assistant. This algebra is a generalization of Glushkov algorithmic algebras which is well suited for representing semantic...

    Artur Korniłowicz, Andrii Kryvolap in Information Systems Architecture and Techn… (2018)

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    Chapter and Conference Paper

    Extended Floyd-Hoare Logic over Relational Nominative Data

    The classical Floyd-Hoare logic is defined for the case of total pre- and postconditions and partial programs (i.e. programs can be undefined on some input data, but conditions must be defined on all data). In...

    Mykola Nikitchenko, Ievgen Ivanov in Information and Communication Technologies… (2018)

  8. Chapter and Conference Paper

    On Local Characterization of Global Timed Bisimulation for Abstract Continuous-Time Systems

    We consider two notions of timed bisimulation on states of continuous-time dynamical systems: global and local timed bisimulation. By analogy with the notion of a bisimulation relation on states of a labeled t...

    Ievgen Ivanov in Coalgebraic Methods in Computer Science (2016)

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    Chapter and Conference Paper

    On Representations of Abstract Systems with Partial Inputs and Outputs

    We consider a class of mathematical models called blocks which generalize some input-output models which appear in mathematical systems theory, control theory, signal processing. A block maps partial functions...

    Ievgen Ivanov in Theory and Applications of Models of Computation (2014)

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    Chapter and Conference Paper

    On a Decidable Formal Theory for Abstract Continuous-Time Dynamical Systems

    We propose a decidable formal theory which describes high-level properties of abstract continuous-time dynamical systems called Nondeterministic Complete Markovian Systems (NCMS). NCMS is a rather general clas...

    Ievgen Ivanov, Mykola Nikitchenko in Information and Communication Technologies… (2014)

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    Chapter and Conference Paper

    On Algebraic Properties of Nominative Data and Functions

    In the chapter basic properties of nominative data and functions over nominative data (nominative functions) are investigated from the perspective of abstract algebra. A set of all nominative data over arbitra...

    Volodymyr G. Skobelev, Mykola Nikitchenko in Information and Communication Technologies… (2014)

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    Chapter and Conference Paper

    On Existence of Total Input-Output Pairs of Abstract Time Systems

    We consider a class of abstract mathematical models called blocks which generalize some input-output system models which are frequently used in system theory, cybernetics, control theory, signal processing. A ...

    Ievgen Ivanov in Information and Communication Technologies… (2013)

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    Chapter and Conference Paper

    A Criterion for Existence of Global-in-Time Trajectories of Non-deterministic Markovian Systems

    We consider the following question: given a continuous-time non-deterministic (not necessarily time-invariant) dynamical system, is it true that for each initial condition there exists a global-in-time traject...

    Ievgen Ivanov in ICT in Education, Research, and Industrial Applications (2013)