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On matrices whose exponential is a P-matrix
Communications in Optimization TheorySummary: A matrix is called a P-matrix if all its principal minors are positive. P-matrices have found important applications in functional analysis, mathematical programming, and dynamical systems theory. We introduce a new class of real matrices denoted \(\mathbb{E}^{\mathbb{P}}\).
Wu, Chengshuai +2 more
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Measurement Theory and the P‐matrix: Ramifications of Variable Choice
The FASEB Journal, 2016Choosing which measurements to include in an analysis is often as much a matter of tradition and training as critical evaluation. Variable choice, however, may have unintended consequences on conclusions, especially in studies that assume these variables reflect evolutionary and developmental processes.
Kristen R. R. Savell +1 more
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The P matrix methods for the quark model
Nuclear Physics A, 1987Abstract Physical foundations of the P-matrix approach, connecting P-matrix poles to multiquark states, are explored. The QCB interaction is constructed explicitly for ππ, πN, πK, KN and NN systems. Deuteron and tritium characteristics are calculated.
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Development of Fe-P Matrix Composites Containing Embedded Solid Lubricants
Materials Science Forum, 2014In this work the processing of composites containing graphite or hexagonal boron nitride dispersed in a ferrous matrix alloyed with phosphorous was addressed, with the goal of developing self-lubricating sintered materials with high mechanical resistance. Phosphorous is an alloy element characteristic in powder metallurgy for promoting the formation of
Antonio Itamar Ramos Filho +3 more
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A generalised P-matrix model for SAW filters
IEEE Symposium on Ultrasonics, 2003, 2004The P-matrix model, which can be seen as a discrete version of the continuous COM model, is a well established tool to analyse the electro-acoustic properties of IDTs and reflector gratings. It relates both outgoing acoustic surface waves and the electric current to both incoming acoustic surface waves and the electric voltage.
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Physical Review D, 1987
Exact model calculations are employed to test the reliability of methods using properties of bag-model states to obtain P- or F-matrix parameters.
, Crawford, , Miller
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Exact model calculations are employed to test the reliability of methods using properties of bag-model states to obtain P- or F-matrix parameters.
, Crawford, , Miller
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Off-shell two-particle scattering amplitude in the P-matrix approach
Theoretical and Mathematical Physics, 1988A generalization of the P-matrix approach which makes it possible to describe the interaction of two particles off the energy shell is proposed. Explicit separation in the wave function of a part corresponding to free motion yields a compact expression for the off-shell scattering amplitude and gives directly a method for separable expansion of the ...
V. A. Babenko, N. M. Petrov
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Coupled Channels and P-matrix approach to Baryon-Antibaryon Interactions
1987Recent data [1,2] taken at LEAR on the reaction \(\overline {p\,} \,p \to \,\overline A A\) show some interesting features. The differential cross-section is highly anisotropic even close to threshold, suggesting the contribution of many partial waves to the reaction.
Timmers, P. +3 more
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Extended p-matrix model to calculate imbalance characteristics of CRF filters
IEEE Ultrasonics Symposium, 2004, 2005An extended P-matrix model is introduced that includes additional electrical ports to take into account particular electrode polarities. The transduction efficiency and static capacitance of any particular electrode are calculated using the model of reflecting grating and electrostatic charge distribution in the total electrode structure.
V.I. Grigorievsky, V.P. Plessky
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A Simple P-Matrix Linear Complementarity Problem for Discounted Games
2008The values of a two-player zero-sum binary discounted game are characterized by a P-matrix linear complementarity problem (LCP). Simple formulas are given to describe the data of the LCP in terms of the game graph, discount factor, and rewards. Hence it is shown that the unique sink orientation (USO) associated with this LCP coincides with the strategy
Marcin Jurdziński, Rahul Savani
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