Browsing by Subject "Algebra"
Now showing items 120 of 39

Report
Algebraic and Geometric Approach in Function Problem Solving
(International Group for the Psychology of Mathematics Education, 2004)This study explores students algebraic and geometric approach in solving tasks in functions and the relation of these approaches with complex geometric problem solving. Data were obtained from 95 sophomore preservice ...

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Algebraic approaches for fault identification in discreteevent systems
(2005)In this note, we develop algebraic approaches for fault identification in discreteevent systems that are described by Petri nets. We consider faults in both Petri net transitions and places, and assume that system events ...

Article
Algebraic properties of evolution partial differential equations modelling prices of commodities
(2008)Schwartz (J. Finance 1997

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Algebraic solution of the SteinStein model for stochastic volatility
(2011)We provide an algebraic approach to the solution of the SteinStein model for stochastic volatility which arises in the determination of the RadonNikodym density of the minimal entropy of the martingale measure. We extend ...

Article
Are registers of representations and problem solving processes on functions compartmentalized in students' thinking?
(2006)The purpose of the present study is twofold: first, to review and summarize previous research on the compartmentalization of different registers of representations and problem solving approaches related to the concept of ...

Article
The ASBMSA turbulence closure: Taking advantage of structurebased modeling in current engineering CFD codes
(2015)Structurebased turbulence models (SBM) carry information about the turbulence structure that is needed for the prediction of complex nonequilibrium flows. SBM have been successfully used to predict a number of canonical ...

Article
BogoyavlenskyVolterra and Birkhoff integrable systems
(2004)In this paper we examine an interesting connection between the generalized Volterra lattices of Bogoyavlensky and a special case of an integrable system defined by Sklyanin. The Sklyanin system happens to be one of the ...

Article
ColeffHerrera Currents Revisited
(2012)In the present paper, we describe the recent approach to residue currents by Andersson, Björk, and Samuelsson (Andersson in Ann. Fac. Sci. ToulouseMath. Sér. 18(4):651661, 2009

Article
The cost of concurrent, lowcontention Read&Modify&Write
(2005)The possibility or impossibility and the corresponding costs of devising concurrent, lowcontention implementations of atomic Read&Modify&Write (or RMW) operations in a distributed system were addressed. A natural class ...

Conference Object
Directly computable L2 and Lx performance bounds for Morse's dynamic certainty equivalence adaptive controller
(1995)In this paper we consider a model reference adaptive control scheme where the classical error augmentation and standard tuning error normalization are avoided through the use of Morse's high order tuner. We consider the ...

Article
EightDimensional Quantum Hall Effect and "Octonions"
(2003)A generalization of the quantum Hall effect (QHE) where particles move in an eightdimensional space under an SO(8) gauge field was constructed. A nonrelativistic Hamiltonian for particles moving on the S8 in the presence ...

Article
Enhanced group classification of Benjamin–Bona–Mahony–Burgers equations
(2017)A class of the Benjamin–Bona–Mahony–Burgers (BBMB) equations with timedependent coefficients is investigated with the Lie symmetry point of view. The set of admissible transformations of the class is described exhaustively. ...

Article
Enhanced group classification of Gardner equations with timedependent coefficients
(2015)We classify the Lie symmetries of variable coefficient Gardner equations (called also the combined KdVmKdV equations). In contrast to the particular results presented in Molati and Ramollo (2012) we perform the exhaustive ...

Article
A Family of ResourceBound RealTime Process Algebras
(2006)The Algebra of Communicating Shared Resources (ACSR) is a timed process algebra which extends classical process algebras with the notion of a resource. It takes the view that the timing behavior of a realtime system depends ...

Article
Faulttolerant computation in groups and semigroups: Applications to automata, dynamic systems and Petri nets
(2002)The traditional approach to faulttolerant computation has been via modular hardware redundancy. Although universal and simple, modular redundancy is inherently expensive and inefficient. By exploiting particular structural ...

Article
Generalized Lotka  Volterra systems connected with simple Lie algebras
(2015)We devise a new method for producing Hamiltonian systems by constructing the corresponding Lax pairs. This is achieved by considering a larger subset of the positive roots than the simple roots of the root system of a ...

Article
Group classification of systems of diffusion equations
(2017)Group classification of a class of systems of diffusion equations is carried out. Arbitrary elements that appear in the system depend on two variables. All forms of the arbitrary elements that provide additional Lie ...

Article
Hiding resources that can fail: An axiomatic perspective
(2001)In earlier work, we presented a process algebra, PACSR, that uses a notion of resource failure to capture probabilistic behavior in reactive systems. PACSR also supports an operator for resource hiding. In this paper, we ...

Conference Object
How many attackers can selfish defenders catch?
(2008)In a distributed system with attacks and defenses, an economic investment in defense mechanisms aims at increasing the degree of system protection against the attacks. We study such investments in the selfish setting, where ...

Conference Object
Information states in optimal control of stochastic systems: A Lie algebraic theoretic approach
(IEEE, 1997)In this paper we introduce the sufficient statistic algebra which is responsible for propagating the sufficient statistic, or information state, in the optimal control of stochastic systems. Using a Lie algebraic formulation, ...