Results 201 to 210 of about 600,804 (334)

Approximations to real algebraic numbers by algebraic numbers of smaller degree [PDF]

Pacific Journal of Mathematics, 1981
openaire   +2 more sources

UNIQUENESS OF PRODUCTS IN HIGHER ALGEBRAIC K-THEORY(Algebraic K-Theory and Algebraic Number Theory)

, 1987
Kazuhisa Shimakawa
openalex   +1 more source

Existence Analysis of a Three‐Species Memristor Drift‐Diffusion System Coupled to Electric Networks

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT The existence of global weak solutions to a partial‐differential‐algebraic system is proved. The system consists of the drift‐diffusion equations for the electron, hole, and oxide vacancy densities in a memristor device, the Poisson equation for the electric potential, and the differential‐algebraic equations for an electric network.
Ansgar Jüngel, Tuấn Tùng Nguyến
wiley   +1 more source

A new method for a priori practical identifiability. [PDF]

PLoS One
Thompson P, Andersson BJ, Sundqvist N, Cedersund G.   +3 more
europepmc   +1 more source

A New Number Theory-Algebra Analysis II

, 2016
L Sonaglioni
openalex   +1 more source

From Stability to Chaos: A Complete Classification of the Damped Klein‐Gordon Dynamics

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We investigate the transition between stability and chaos in the damped Klein‐Gordon equation, a fundamental model for wave propagation and energy dissipation. Using semigroup methods and spectral criteria, we derive explicit thresholds that determine when the system exhibits asymptotic stability and when it displays strong chaotic dynamics ...
Carlos Lizama, Marina Murillo‐Arcila, Julio Puerta‐Fernández   +2 more
wiley   +1 more source

Planar chemical reaction systems with algebraic and non-algebraic limit cycles. [PDF]

J Math Biol
Craciun G, Erban R.
europepmc   +1 more source

Transcendental entire functions mapping every algebraic number field into itself [PDF]

, 1968
A. J. van der Poorten
openalex   +1 more source

Repeatability of Rapid Human Cardiac Phosphorus MRSI (31P‐MRSI) Using Concentric Ring Trajectory Readouts at 7 T

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose PCr/ATP ratio is determined at 7 T typically using Fourier‐transform based magnetic resonance spectroscopic imaging sequences (FT‐MRSI). These sequences require acquisition times longer than desirable for inclusion in cardiac clinical trials. Concentric ring trajectory (CRT‐MRSI) has been described as an accelerated alternative k‐space
Ferenc E. Mózes, William T. Clarke, Andrew Tyler, Jabrane Karkouri, Fabian Niess, Jack J. J. J. Miller, Christopher T. Rodgers, Wolfgang Bogner, Ladislav Valkovič   +8 more
wiley   +1 more source

Irrationality and transcendence questions in the 'poor man's adèle ring'. [PDF]

Ramanujan J
Luca F, Zudilin W.
europepmc   +1 more source