Results 11 to 20 of about 10,435,760 (324)

Mirror Descent and Exponentiated Gradient Algorithms Using Trace-Form Entropies [PDF]

open access: yesEntropy
This paper introduces a broad class of Mirror Descent (MD) and Generalized Exponentiated Gradient (GEG) algorithms derived from trace-form entropies defined via deformed logarithms. Leveraging these generalized entropies yields MD and GEG algorithms with
Andrzej Cichocki   +3 more
doaj   +2 more sources

Discrete 2D Material Programming for 3D Shaping and Morphogenesis-Inspired 4D Bioprinting. [PDF]

open access: yesAdv Sci (Weinh)
Cell‐compatible discrete 2D material programming enables 2‐to‐3D shape transformation and morphogenesis‐inspired 4D bioprinting. By patterning cell‐supportive microdomains within a responsive hydrogel, the approach programs in‐plane growth to encode target metrics.
Family F, Davuluri A, Martin A, Yum K.
europepmc   +2 more sources

Integrable quadratic Hamiltonians on the Euclidean group of motions [PDF]

open access: yes, 2010
In this paper, we discuss the problem of globally computing sub-Riemannian curves on the Euclidean group of motions SE(3). In particular, we derive a global result for special sub-Riemannian curves whose Hamiltonian satisfies a particular condition.
Biggs, James   +7 more
core   +4 more sources

Quadratic Hamiltonians on non-Euclidean spaces of arbitrary constant curvature [PDF]

open access: yes, 2013
This paper derives explicit solutions for Riemannian and sub-Riemannian curves on non-Euclidean spaces of arbitrary constant cross-sectional curvature.
Biggs, James
core   +4 more sources

HERBRAND’S THEOREM AND NON-EUCLIDEAN GEOMETRY [PDF]

open access: yesThe Bulletin of Symbolic Logic, 2015
AbstractWe use Herbrand’s theorem to give a new proof that Euclid’s parallel axiom is not derivable from the other axioms of first-order Euclidean geometry. Previous proofs involve constructing models of non-Euclidean geometry. This proof uses a very old and basic theorem of logic together with some simple properties of ruler-and-compass constructions ...
Beeson, Michael   +2 more
openaire   +5 more sources

On the Euclidean action of de Sitter black holes and constrained instantons

open access: yesSciPost Physics, 2023
We compute the on-shell Euclidean action of Schwarzschild-de Sitter black holes, and take their contributions in the gravitational path integral into account using the formalism of constrained instantons.
Edward K. Morvan, Jan Pieter van der Schaar, Manus R. Visser
doaj   +1 more source

Generalized Thomson problem in arbitrary dimensions and non-euclidean geometries [PDF]

open access: yes, 2013
Systems of identical particles with equal charge are studied under a special type of confinement. These classical particles are free to move inside some convex region S and on the boundary of it Ω (the Sd−1−sphere, in our case).
J. Batle   +3 more
semanticscholar   +1 more source

Non-Euclidean Geometry [PDF]

open access: yesNature, 1911
As many mathematicians give very little thought to the theory of sets, it is perhaps worth while dwelling for moment on Dr. Sommerville's possibly misleading remarks in NATURE of October 5. He, quite correctly, points out the one-one correspondence between the aggregates of integral numbers 1, 2, 3, &c. (n), and even numbers 2, 4, 6, &c. (2n). Thus the
  +6 more sources

Pseudo-manifold geometries with applications [PDF]

open access: yes, 2006
A Smarandache geometry is a geometry which has at least one Smarandachely denied axiom(1969), i.e., an axiom behaves in at least two different ways within the same space, i.e., validated and invalided, or only invalided but in multiple distinct ways and ...
Mao, Linfan, Linfan Mao
core   +1 more source

International Journal of Mathematical Combinatorics, Vol.7A [PDF]

open access: yes, 2013
The International J.Mathematical Combinatorics (ISSN 1937-1055) is a fully refereed international journal, sponsored by the MADIS of Chinese Academy of Sciences and published in USA quarterly comprising 460 pages approx.
Mao, Linfan (Editor-in-Chief)
core   +1 more source

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