Results 131 to 140 of about 26,900 (293)

On the mapping of quadratic forms [PDF]

Bulletin of the American Mathematical Society, 1941
openaire   +4 more sources

Search for homogeneous polynomial invariants and a cubic-homogeneous mapping without quadratic invariants

, 2008
The class of the cubic-homogenous mappings with nonzero constant Jacobian determinant is interesting because if it were proved that all mappings in this class are invertible, then the general Jacobian Conjecture would follow.
G. Gorni, ZAMPIERI, Gaetano, R. D. S. Freire   +2 more
core  

Modular, Textile‐Based Soft Robotic Grippers for Agricultural Produce Handling

Advanced Robotics Research, EarlyView.
This article introduces textile‐based pneumatic grippers that transform simple textiles into robust bending actuators. Detailed experiments uncover how cut geometry and fabric selection shape performance. Successful handling of fragile agricultural items showcases the potential of textile robotics for safe, scalable automation in food processing and ...
Zeyu Hou, Eran Beeri Bamani, Joao Buzzatto, Bryan Busby, Lucas Ferrari Gerez   +4 more
wiley   +1 more source

Nonnegativity of quadratic forms on intersections of quadrics and quadratic maps

Mathematical Notes, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +4 more sources

Multiphoton‐Printed Microrobotic Arrays Powered by Discrete, Monolithically Integrated Hydrogel Actuators

Advanced Robotics Research, EarlyView.
Functional surfaces are investigated as a foundation for reconfigurable microscale systems with sensing and actuation capabilities. Advances in additive manufacturing enable our development of planar arrays of hybrid‐material, compliant microdevices that convert environmental stimuli into programmed motion and visual responses.
Sandra Edward, Eric Nieto Gonzalez, Michael Gallegos, Thomas Golecki, Bryan Kaehr, Holly M. Golecki   +5 more
wiley   +1 more source

Consensus Formation and Change are Enhanced by Neutrality

Advanced Science, EarlyView.
Neutral agents are shown to enhance both the formation and overturning of consensus in collective decision‐making. A general mathematical model and experiments with locusts and humans reveal that neutrality enables robust consensus via simple interactions and accelerates consensus change by reducing effective population size.
Andrei Sontag, Janina A. Hoffmann, Tim Rogers, Christian A. Yates   +3 more
wiley   +1 more source

Solid Harmonic Wavelet Bispectrum for Image Analysis

Advanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown, Mathilda Avirett‐Mackenzie, Carolin Villforth, Georgios Exarchakis   +3 more
wiley   +1 more source

Robust and Sparse Kernel-Free Quadratic Surface LSR via L_2,p-Norm With Feature Selection for Multi-Class Image Classification

IEEE Access
Least Squares Regression (LSR) is a powerful machine learning method for image classification and feature selection. In this study, a framework approach is introduced for the multi-classification problem based on the $L_{2,p}$ -norm, utilizing more ...
Yongqi Zhu, Zhixia Yang, Junyou Ye, Yongxing Hu   +3 more
doaj   +1 more source

Quadratic derivations on non-Archimedean Banach algebras [PDF]

, 2014
Let A be an algebra and X be an A-module. A quadratic mapping D : A X is called a quadratic derivation if D(ab) = D(a)b(2) + a(2) D(b) for all a(1), a(2) is an element of A.
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core  

Diversity of Pharmaceuticals Enhances Antibiotic Resistance in the Invertebrate Gut via Biofilm‐Mediated Mechanisms

Advanced Science, EarlyView.
Pharmaceutical diversity acts as an independent driver of antibiotic resistance in soil invertebrates. While bulk soil remains unaffected, the collembolan gut microbiome exhibits significant resistance gene enrichment under complex chemical exposure and diurnal warming.
Yi‐Fei Wang, Ya‐Ning Wang, Da Lin, Jia‐Yang Xu, Feng‐Yuan Qi, Hui‐Ling Cui, Hui‐Jie Lu, Min Qiao, Edward Topp, Dong Zhu, Matthias C. Rillig, Yong‐Guan Zhu   +11 more
wiley   +1 more source