Results 81 to 90 of about 4,592,487 (264)

Grassmannians, multiplicative ward identities and theta-function identities

open access: yesPhysics Letters B, 1988
Abstract The symmetry group Div0(Σ) on a Riemann surface is used to derive multiplicative Ward identities. These are used to determine the propagator for a spin-J system and to derive Fay's trisecant identity.
Siddhartha Sen, A.K. Raina
openaire   +1 more source

A generalized circular summation of theta function and its application [PDF]

open access: yes, 2009
In this paper we prove a generalized Ramanujan's circular summation of theta function using the theory of elliptic and theta functions. This identity also includes a result of M. Boon, M.L. Glasser, J. Zar, I.J.
Zeng, Xian-Feng, Xian-Feng Zeng
core   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran   +6 more
wiley   +1 more source

Abelian functions associated with a cyclic tetragonal curve of genus six [PDF]

open access: yes, 2009
We develop the theory of Abelian functions defined using a tetragonal curve of genus six, discussing in detail the cyclic curve y^4 = x^5 + λ[4]x^4 + λ[3]x^3 + λ[2]x^2 + λ[1]x + λ[0].
Eilbeck, J. C.   +2 more
core   +1 more source

Modeling Dislocation Cutting of γ′ Precipitates in Ni‐Base Superalloys: Linking Atomistic and Dislocation Dynamics Simulations

open access: yesAdvanced Engineering Materials, EarlyView.
Dislocation cutting of γ′ precipitates in Ni‐based superalloys is investigated by linking atomistic simulations with discrete dislocation dynamics. The critical cutting stress is shown to be governed by the antiphase boundary energy, while line tension effects promote edge‐preferred cutting.
Frédéric Houllé   +9 more
wiley   +1 more source

Partition identities from third and sixth order mock theta functions [PDF]

open access: yes, 2012
In a recent paper, the first author gave a connection between bilateral basic hypergeometric series and mock theta functions, which led to many new identities involving mock theta functions.
Kim, Byungchan, Choi, Youn-Seo
core   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

open access: yesAdvanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati   +11 more
wiley   +1 more source

Abstract Augmented Lazy Theta*: Applying Graph Abstractions to Trajectory Planning with Speed-Limit Constraints [PDF]

open access: yes, 2014
Trajectory planning is a generalisation of path planning in which velocity is also taken into consideration. Considering velocity, in the context of a real-world system such as a robotic vehicle, means considering physical constraints such as the ...
Chrpa, Lukáš, Gregory, Peter
core   +1 more source

High‐Resolution Corrosion Fingerprinting of Alloy Libraries via Microdroplet Spectroelectrochemistry

open access: yesAdvanced Engineering Materials, EarlyView.
Ionic‐liquid microdroplet spectroelectrochemistry enables stable, localized electrochemical measurements over extended timescales. By coupling impedance spectroscopy, wetting analysis, finite‐element simulations, and operando Raman spectroscopy, it disentangles geometrical and electrochemical effects, opening new opportunities for rapid corrosion ...
Ekaterina Kurchavova   +3 more
wiley   +1 more source

On Ramanujan's general theta function and a generalization of the borweins' cubic theta functions

open access: yes, 2015
The Borwein brothers have introduced and studied three cubic theta functions. Many generalizations of these functions have been studied as well. In this paper, we introduce a new generalization of these functions and establish general formulas that are ...
Adiga, Chandrashekar   +1 more
core   +1 more source

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