Results 41 to 50 of about 53,514 (278)

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

RealCertify: a Maple package for certifying non-negativity

open access: yes, 2018
Let $\mathbb{Q}$ (resp. $\mathbb{R}$) be the field of rational (resp. real) numbers and $X = (X_1, \ldots, X_n)$ be variables. Deciding the non-negativity of polynomials in $\mathbb{Q}[X]$ over $\mathbb{R}^n$ or over semi-algebraic domains defined by ...
Din, Mohab Safey El, Magron, Victor
core   +3 more sources

Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots

open access: yesAdvanced Robotics Research, EarlyView.
A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun   +3 more
wiley   +1 more source

Experience with Heuristics, Benchmarks & Standards for Cylindrical Algebraic Decomposition [PDF]

open access: yes, 2017
In the paper which inspired the SC2 project, [E. A´ bra´ham, Building Bridges between Symbolic Computation and Satisfiability Checking, Proc. ISSAC ’15, pp. 1–6, ACM, 2015] the author identified the use of sophisticated heuristics as a technique that the
Davenport, James H., England, Matthew
core  

A Perspective on Interactive Theorem Provers in Physics

open access: yesAdvanced Science, EarlyView.
Into an interactive theorem provers (ITPs), one can write mathematical definitions, theorems and proofs, and the correctness of those results is automatically checked. This perspective goes over the best usage of ITPs within physics and motivates the open‐source community run project PhysLean, the aim of which is to be a library for digitalized physics
Joseph Tooby‐Smith
wiley   +1 more source

A Computational Approach to the Perimeter-Area Inequality in a Triangle

open access: yesAxioms
This paper explores the application of automated reasoning tools, specifically those implemented in GeoGebra Discovery, to the perimeter-area inequality in triangles.
Tomás Recio   +2 more
doaj   +1 more source

Symbolic Generation of Adomian Polynomials for Different Nonlinearities by Python [PDF]

open access: yesJournal of Chemical and Petroleum Engineering
The Adomian decomposition method (ADM) is a powerful mathematical technique to find closed-form solutions to nonlinear functional equations including ODEs, PDEs, differential-difference, integral, integro-differential, algebraic, and transcendental ...
Mohsen Noorimohammad   +2 more
doaj   +1 more source

NCSOStools: a computer algebra system for symbolic and numerical computation with noncommutative polynomials [PDF]

open access: yesOptimization Methods and Software, 2011
NCSOStools is a Matlab toolbox for • symbolic computation with polynomials in noncommuting NC variables; • constructing and solving sum of Hermitian squares with commutators programs for polynomials in NC variables. It can be used in combination with semidefinite programming software, such as SeDuMi, SDPA or SDPT3, to solve these ...
Kristijan Cafuta, Igor Klep, Janez Povh
openaire   +1 more source

On the complexity of computing with zero-dimensional triangular sets [PDF]

open access: yes, 2011
We study the complexity of some fundamental operations for triangular sets in dimension zero. Using Las-Vegas algorithms, we prove that one can perform such operations as change of order, equiprojectable decomposition, or quasi-inverse computation with a
Poteaux, Adrien, Schost, Éric
core   +7 more sources

Transient modeling of extraction columns: Parameter estimation, uncertainty analysis, and operation optimization

open access: yesAIChE Journal, EarlyView.
Abstract Despite extensive modeling efforts in extraction research, transient column models are rarely applied in industry due to concerns regarding parameter identifiability and model reliability. To address this, we analyzed uncertainty propagation from estimated parameters in a previously introduced column model and assessed identifiability via ill ...
Andreas Palmtag   +2 more
wiley   +1 more source

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