Results 61 to 70 of about 211,113 (260)

Urban Geography Compression Patterns: Non-Euclidean and Fractal Viewpoints

open access: yesAppliedMath
The intersection of fractals, non-Euclidean geometry, spatial autocorrelation, and urban structure offers valuable theoretical and practical application insights, which echoes the overarching goal of this paper.
Daniel A. Griffith   +1 more
doaj   +1 more source

Generalization of the maximum entropy principle for curved statistical manifolds

open access: yesPhysical Review Research, 2021
The maximum entropy principle (MEP) is one of the most prominent methods to investigate and model complex systems. Despite its popularity, the standard form of the MEP can only generate Boltzmann-Gibbs distributions, which are ill-suited for many ...
Pablo A. Morales, Fernando E. Rosas
doaj   +1 more source

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, M. (Michael)   +2 more
openaire   +4 more sources

Selected topics in non-Euclidean geometry [PDF]

open access: yes, 1930
Call number: LD2668 .T4 1930 ...
Evans, Paul Lawrence.
core  

PD‐1 Inhibits CD4+ TRM‐Mediated cDC1 Mobilization via Suppressing JAML in Human NSCLC

open access: yesAdvanced Science, EarlyView.
CD4+ tissue‐resident memory T cells (TRMs) in non‐small cell lung cancer recruit conventional type 1 dendritic cells via XCL1‐XCR1 signaling, orchestrating antitumor immunity. The costimulatory molecule JAML is essential for this process. PD‐1 blockade restores JAML expression and cDC1 mobilization, while JAML agonists synergize with anti‐PD‐1 therapy,
Zheyu Shao   +16 more
wiley   +1 more source

Retinoic Acid Reprograms Mast Cells Toward a Proinflammatory State to Enhance Antitumor Immunity

open access: yesAdvanced Science, EarlyView.
Proinflammatory mast cells represent an MHC‐IIhigh, cytokine‐producing mast cell subset associated with improved survival and enhanced responses to anti‐PD‐1 therapy. Retinoic acid drives their polarization, enabling antigen uptake and presentation, and T cell recruitment and activation, collectively promoting adaptive anti‐tumor immunity.
Lizao Zhang   +25 more
wiley   +1 more source

The two-sphere partition function from timelike Liouville theory at three-loop order

open access: yesJournal of High Energy Physics, 2022
While the Euclidean two-dimensional gravitational path integral is in general highly fluctuating, it admits a semiclassical two-sphere saddle if coupled to a matter CFT with large and positive central charge. In Weyl gauge this gravity theory is known as
Beatrix Mühlmann
doaj   +1 more source

Answering a Basic Objection to Bang/Crunch Holography

open access: yes, 2004
The current cosmic acceleration does not imply that our Universe is basically de Sitter-like: in the first part of this work we argue that, by introducing matter into *anti-de Sitter* spacetime in a natural way, one may be able to account for the ...
A. Kehagias   +65 more
core   +1 more source

Comment on “De Novo Reconstruction of 3D Human Facial Images from DNA Sequence”

open access: yesAdvanced Science, EarlyView.
This comment examines AI‐driven DNA‐based facial reconstruction, focusing on the Difface model. While such technologies promise biomedical and forensic applications, they pose significant ethical, legal, and methodological challenges. We emphasize transparency, benchmarking, and rigorous validation to avoid misinterpretation and misuse.
Jennifer K. Wagner   +3 more
wiley   +1 more source

Learners’ algebraic and geometric connections when solving Euclidean geometry riders

open access: yesPythagoras
In this article, we explored Grade 11 learners’ algebraic and geometric connections when solving Euclidean geometry riders. A qualitative interpretive case study design was followed.
Hans Bila, Kgaladi Maphutha, Paul Mutodi
doaj   +1 more source

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