Results 11 to 20 of about 160,633 (221)

Numerical linear algebra for reconstruction inverse problems

open access: yesJournal of Computational and Applied Mathematics, 2004
Our goal in this paper is to discuss various issues we have encountered in trying to find and implement efficient solvers for a boundary integral equation (BIE) formulation of an iterative method for solving a reconstruction problem.
A. Nachaoui
semanticscholar   +3 more sources

Interpretability and Representability of Commutative Algebra, Algebraic Topology, and Topological Spectral Theory for Real-World Data. [PDF]

open access: yesAdv Intell Discov
This article investigates how persistent homology, persistent Laplacians, and persistent commutative algebra reveal complementary geometric, topological, and algebraic invariants or signatures of real‐world data. By analyzing shapes, synthetic complexes, fullerenes, and biomolecules, the article shows how these mathematical frameworks enhance ...
Ren Y, Wei GW.
europepmc   +2 more sources

Projections in minimax algebra [PDF]

open access: yes, 1976
An axiomatic theory of linear operators can be constructed for abstract spaces defined over (R, ⊕, ⊗), that is over the (extended) real numbersR with the binary operationsx ⊕ y = max (x,y) andx ⊗ y = x + y.
Cuninghame-Green, R.A.
core   +2 more sources

Multiparameter Inversion: Cramer's Rule for Pseudodifferential Operators

open access: yesInternational Journal of Geophysics, 2011
Linearized multiparameter inversion is a model-driven variant of amplitude-versus-offset analysis, which seeks to separately account for the influences of several model parameters on the seismic response.
Rami Nammour, William W. Symes
doaj   +1 more source

Nested (inverse) binomial sums and new iterated integrals for massive Feynman diagrams [PDF]

open access: yes, 2014
Nested sums containing binomial coefficients occur in the computation of massive operator matrix elements. Their associated iterated integrals lead to alphabets including radicals, for which we determined a suitable basis.
Ablinger, Jakob   +3 more
core   +1 more source

Application of unified array calculus to connect 4-D spacetime sensing with string theory and relativity

open access: yesJournal of Geodetic Science, 2013
Array algebra of photogrammetry and geodesy unified multi-linear matrix and tensor operators in an expansion of Gaussian adjustment calculus to general matrix inverses and solutions of inverse problems to find all, or some optimal, parametric solutions ...
Rauhala U. A.
doaj   +1 more source

Splittings of extensions and homological bidimension of the algebra of bounded operators on a Banach space [PDF]

open access: yes, 2016
We show that there exists a Banach space $E$ with the following properties: the Banach algebra $\mathscr{B}(E)$ of bounded, linear operators on $E$ has a singular extension which splits algebraically, but it does not split strongly, and the homological ...
Laustsen, Niels Jakob   +1 more
core   +4 more sources

Aggregating distributed energy resources for grid flexibility services: A distributed game theoretic approach

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView., 2023
Abstract We propose a hierarchical energy management scheme for aggregating Distributed Energy Resources (DERs) for grid flexibility services. To prevent a direct participation of numerous prosumers in the wholesale electricity market, aggregators, as self‐interest agents in our scheme, incentivize prosumers to provide flexibility. We firstly model the
Xiupeng Chen   +3 more
wiley   +1 more source

Symbolic Method for Solving Nonlocal Boundary Value Problems for Systems of Ordinary Loaded Integro-Differential Equations

open access: yesMathematics
A symbolic method is presented for examining the solvability and constructing the exact solution to boundary value problems for systems of linear ordinary loaded differential equations and loaded integro-differential equations with nonlocal boundary ...
Efthimios Providas   +2 more
doaj   +1 more source

Efficient Quantum Algorithms for State Measurement and Linear Algebra Applications

open access: yes, 2018
We present an algorithm for measurement of $k$-local operators in a quantum state, which scales logarithmically both in the system size and the output accuracy. The key ingredients of the algorithm are a digital representation of the quantum state, and a
Patel, Apoorva, Priyadarsini, Anjani
core   +1 more source

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