Results 161 to 170 of about 8,151 (193)

Entrywise transforms preserving matrix positivity and nonpositivity

Journal of the London Mathematical Society, Volume 113, Issue 5, May 2026.
Abstract We characterize real and complex functions which, when applied entrywise to square matrices, yield a positive definite matrix if and only if the original matrix is positive definite. We refer to these transformations as sign preservers. Compared to the classical work on entrywise preservers by Schoenberg and others, we completely resolve this ...
Dominique Guillot, Himanshu Gupta, Prateek Kumar Vishwakarma, Chi Hoi Yip   +3 more
wiley   +1 more source

Artificial Intelligence-Driven Modeling for Hydrogel Three-Dimensional Printing: Computational and Experimental Cases of Study. [PDF]

Polymers (Basel)
Bediaga-Bañeres H, Moreno-Benítez I, Arrasate S, Pérez-Álvarez L, Halder AK, Cordeiro MNDS, González-Díaz H, Vilas-Vilela JL.   +7 more
europepmc   +1 more source

Advances in foam-based materials for electromagnetic interference shielding: synthesis, properties, and performance. [PDF]

Discov Nano
Subramanian M, Thondiyanoor Pisharam S.
europepmc   +1 more source

Canonicalizing Zeta Generators: Genus Zero and Genus One. [PDF]

Commun Math Phys
Dorigoni D, Doroudiani M, Drewitt J, Hidding M, Kleinschmidt A, Schlotterer O, Schneps L, Verbeek B.   +7 more
europepmc   +1 more source

Reactive Machine Learning Interatomic Potentials for Chemistry and Materials Science. [PDF]

Chem Rev
Kim J, Cho H, Jeon H, Jung J, Han S.
europepmc   +1 more source

Influence of aging on dermal elastin fiber architecture and skin firmness assessed by finite element modeling. [PDF]

Sci Rep
Jiang F, Tohgasaki T, Kami M, Sanuki R, Nakata Y, Kondo S, Chen X.   +6 more
europepmc   +1 more source

Unravelling the Influence of the Local Structure on the Ultralow Thermal Conductivity of the Bismuthinite-Aikinite Series, Cu_1-<i>x</i>□_<i>x</i>Pb_1-<i>x</i>Bi_1+<i>x</i>S₃. [PDF]

J Am Chem Soc
Vaqueiro P, Herlihy A, Elgaml M, Mukherjee S, Keen DA, Voneshen DJ, Powell AV.   +6 more
europepmc   +1 more source

Attention-enhanced variational learning for physically informed discovery of exceptionally hard multicomponent bulk metallic glasses. [PDF]

Nat Commun
Bajpai A, Wang J, Ratzker B, Şeșen BM, Kark F, Raabe D.   +5 more
europepmc   +1 more source

Using dropout based active learning and surrogate models in the inverse viscoelastic parameter identification of human brain tissue. [PDF]

Front Physiol
Hinrichsen J, Ferlay C, Reiter N, Budday S.   +3 more
europepmc   +1 more source