Results 41 to 50 of about 550,068 (209)

On split quasi-hereditary covers and Ringel duality

Forum of Mathematics, Sigma
In this paper, we develop two new homological invariants called relative dominant dimension with respect to a module and relative codominant dimension with respect to a module.
Tiago Cruz
doaj   +1 more source

A Thermodynamic 3D Model for the Simulation of Diffusion‐Controlled Alloying Processes in Heterogeneous Material Structures

Advanced Engineering Materials, EarlyView.
A numerical model resulting from irreversible thermodynamics for describing transport processes is introduced, focusing on thermodynamic activity gradients as the actual driving force for diffusion. Implemented in CUDA C++ and using CalPhaD methods for determining the necessary activity data, the model accurately simulates interdiffusion in aluminum ...
Ulrich Holländer, Leonhard Holländer, André Langohr, Hans Jürgen Maier   +3 more
wiley   +1 more source

Tensor Constructions of Open String Theories I: Foundations

, 1997
The possible tensor constructions of open string theories are analyzed from first principles. To this end the algebraic framework of open string field theory is clarified, including the role of the homotopy associative A_\infty algebra, the odd ...
Albert, Alexandroff, Alperin, Barton Zwiebach, Batalin, Bergman, Bianchi, Farb, Getzler, Gimon, Hata, Hata, Hata, Henneaux, Lada, Marcus, Markl, Matthias R. Gaberdiel, Paton, Penkava, Schwarz, Schwarz, Sen, Siegel, Stasheff, Stasheff, Thorn, Witten, Witten, Woodhouse, Zwiebach, Zwiebach   +31 more
core   +1 more source

Stress‐Normalized Sensitivity as a Comparative Benchmark for Intrinsically Piezoresistive Nanocomposite Materials in Wearable Electronics

Advanced Materials Technologies, EarlyView.
A stress‐normalised sensitivity metric (S = G/Y) is introduced as a materials‐level benchmark for intrinsically piezoresistive nanocomposites. By decoupling electromechanical response (G) from stiffness (Y), the framework enables direct comparison across diverse systems and clarifies design trade‐offs for wearable sensors.
Conor S. Boland
wiley   +1 more source

Injective hulls of many-sorted ordered algebras

Open Mathematics, 2019
This paper is devoted to the study of injectivity for ordered universal algebras. We first characterize injectives in the category OALΣ⩽$\begin{array}{} \displaystyle {\mathsf{OAL}_{{\it\Sigma}}^{\leqslant}} \end{array}$ of ordered Σ-algebras with lax ...
Zhang Xia, Ma Wen, Rump Wolfgang
doaj   +1 more source

Homotopy moment maps

, 2016
Associated to any manifold equipped with a closed form of degree >1 is an `L-infinity algebra of observables' which acts as a higher/homotopy analog of the Poisson algebra of functions on a symplectic manifold.
Callies, Martin, Fregier, Yael, Rogers, Christopher L., Zambon, Marco   +3 more
core   +1 more source

Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots

Advanced 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, Liang Zhang, Jianwen Zeng, Xuefeng Wang   +3 more
wiley   +1 more source

Excitations in strict 2-group higher gauge models of topological phases

Journal of High Energy Physics, 2020
We consider an exactly solvable model for topological phases in (3+1) d whose input data is a strict 2-group. This model, which has a higher gauge theory interpretation, provides a lattice Hamiltonian realisation of the Yetter homotopy 2-type topological
Alex Bullivant, Clement Delcamp
doaj   +1 more source

Two Dimensional String Theory and the Topological Torus

, 1992
We analyze topological string theory on a two dimensional torus, focusing on symmetries in the matter sector. Even before coupling to gravity, the topological torus has an infinite number of point-like physical observables, which give rise via the BRST ...
Alvarez-Gaumé, Avan, Avan, Avan, Bouwknegt, Dabholkar, Danielsson, Danielsson, Das, Das, Das, Di Francesco, Dijkgraaf, Dijkgraaf, Dijkgraaf, Dijkgraaf, Dijkgraaf, Distler, Distler, Distler, Edwards, Gross, Gross, Gross, Gross, Jevicki, Kitazawa, Klebanov, Klebanov, Klebanov, Klebanov, Klebanov, Klebanov, Kutasov, Kutasov, Kutasov, Li, Li, Li, Lian, Lian, Lian, Marinari, Moore, Moore, Petr Hořava, Polchinski, Polyakov, Polyakov, Sakai, Verlinde, Verlinde, Witten, Witten, Witten, Witten, Witten, Witten, Witten, Witten, Witten, Witten, Witten, Witten   +63 more
core   +1 more source

A State‐Adaptive Koopman Control Framework for Real‐Time Deformable Tool Manipulation in Robotic Environmental Swabbing

Advanced Robotics Research, EarlyView.
This work presents a state‐adaptive Koopman linear quadratic regulator framework for real‐time manipulation of a deformable swab tool in robotic environmental sampling. By combining Koopman linearization, tactile sensing, and centroid‐based force regulation, the system maintains stable contact forces and high coverage across flat and inclined surfaces.
Siavash Mahmoudi, Amirreza Davar, Dongyi Wang   +2 more
wiley   +1 more source