Results 11 to 20 of about 336,860 (179)

Variational Problems with Partial Fractional Derivative: Optimal Conditions and Noether’s Theorem

open access: yesJournal of Function Spaces, 2018
In this paper, the necessary and sufficient conditions of optimality for variational problems with Caputo partial fractional derivative are established. Fractional Euler-Lagrange equations are obtained.
Jun Jiang, Yuqiang Feng, Shougui Li
doaj   +2 more sources

Analogues to Lie Method and Noether’s Theorem in Fractal Calculus

open access: yesFractal and Fractional, 2019
In this manuscript, we study symmetries of fractal differential equations. We show that using symmetry properties, one of the solutions can map to another solution.
Alireza Khalili Golmankhaneh   +1 more
doaj   +2 more sources

Gauge invariant Noether’s theorem and the proton spin crisis

open access: yesJournal of High Energy Physics, 2018
Due to proton spin crisis it is necessary to understand the gauge invariant definition of the spin and orbital angular momentum of the quark and gluon from first principle.
Gouranga C. Nayak
doaj   +2 more sources

The equivalence principle is NOT a Noether symmetry

open access: yesEuropean Physical Journal C: Particles and Fields
The connection between the equivalence principle and Noether’s theorem was discussed in Capozziello and Ferrara (Int J Geom Methods Mod Phys 21:2440014, 2024).
Andronikos Paliathanasis
doaj   +2 more sources

Moving energies hide within Noether’s first theorem [PDF]

open access: yes, 2023
We show that the moving energies of some well-known nonholonomic systems are hidden among the first integrals that can be obtained by applying Noether’s first Theorem to a suitable ...
Sansonetto N.   +3 more
core   +1 more source

Lectures on polynomial equations: Max Noether’s Fundamental Theorem, The Jacobi Formula and Bézout’s Theorem [PDF]

open access: yes, 2022
Using some commutative algebra we prove Max Noether’s Theorem, the Jacobi Formula and B´ezout’s Theorem for systems of polynomial equations defining transversal hypersurfaces without common points at ...
Płoski, Arkadiusz, Arkadiusz Płoski
core   +1 more source

Comment on “Noether’s-type theorems on time scales” [J. Math. Phys. 61, 113502 (2020)] [PDF]

open access: yes, 2023
We comment on the validity of Noether’s theorem and on the conclusions of Anerot et al. [J. Math. Phys. 61(11), 113502 (2020)].The author was supported by FCT under Project No.
Delfim F. M. Torres   +1 more
core   +1 more source

The Unitary Master Ward Identity: Time Slice Axiom, Noether’s Theorem and Anomalies [PDF]

open access: yes, 2022
The C*-algebraic formulation of generic interacting quantum field theories, recently presented by Detlev Buchholz and one of the authors (KF), is enriched by a unitary version of the Master Ward Identity, which was postulated some time ago by Franz Marc ...
Dütsch, Michael   +8 more
core   +1 more source

Noether’s theorem for Herglotz type variational problems utilizing complex fractional derivatives [PDF]

open access: yesTheoretical and Applied Mechanics, 2021
This is a review article which elaborates the results presented in [1], where the variational principle of Herglotz type with a Lagrangian that depends on fractional derivatives of both real and complex orders is formulated and the invariance of this ...
Janev Marko   +2 more
doaj   +1 more source

Euler-Lagrange equations and Noether’s theorem of multi-scale mechano-electrophysiological coupling model of neuron membrane dynamics [PDF]

open access: yes, 2023
Noether’s theorem is applied into a multi-scale mechno-electrophysiological coupling model of neuron membrane dynamics. The Euler-Lagrange equations in generalized coordinates of this model are deduced by the nonconservative Hamilton principle.
Wang, Peng
core   +1 more source

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