Results 81 to 90 of about 2,719 (189)
The density theorem and Hausdorff inequality for packing measure in general metric spaces
Illinois Journal of Mathematics, 1995 There are two basic mechanisms (diameter method and radius method) for extending the definition of Euclidean packing measure to general metric spaces. Although the diameter method has received the most attention in the literature, we show that it is generally inferior to the radius method in preserving the desirable properties of Euclidean packing ...
openaire +3 more sources
Journal of Biophotonics, Volume 18, Issue 10, October 2025.Bright‐field images of unstained smears. (1) Sparse erythrocytes allow straightforward intensity‐ or phase‐based segmentation. (2) Overlapping cells blur boundaries, causing over‐ or under‐segmentation and lowering rule‐based accuracy, thus motivating overlap‐aware algorithms for reliable downstream feature extraction and classification. ABSTRACT Blood
Husnu Baris Baydargil, Thomas Bocklitz
wiley +1 more source
Biomolecular Topology: Modelling and Analysis. [PDF]
Acta Math Sin Engl Ser, 2022 Liu J, Xia KL, Wu J, Yau SS, Wei GW.
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Medical Physics, Volume 52, Issue 10, October 2025.Abstract Background Manual segmentation of organs from PET/CT images is a time‐consuming and highly operator‐dependent task. Open software solutions are now available to automatically segment all major anatomical structures in CT images. Purpose We compared the volumes and standardized uptake values (SUV) extracted from [18F]FDG‐PET/CT patient scans ...
Julie Auriac +9 more
wiley +1 more source
Complete positivity and distance-avoiding sets. [PDF]
Math Program, 2022 DeCorte E, Filho FMO, Vallentin F.
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Market Allocations Under Conflation of Goods
International Economic Review, Volume 66, Issue 4, Page 1681-1691, October 2025.ABSTRACT We study competitive equilibria in exchange economies when a continuum of goods is conflated into a finite set of commodities. The design of conflation choices affects the allocation of scarce resources among agents, by constraining trading opportunities and shifting competitive pressures.
Niccolò Urbinati, Marco LiCalzi
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Studies in Applied Mathematics, Volume 155, Issue 4, October 2025.ABSTRACT In nonisothermal setting, microstructural interactions may determine finite‐speed heat propagation. We consider such an effect in the dynamics of a viscous incompressible complex fluid (i.e., one with “active” microstructure) through a porous medium.
Luca Bisconti, Paolo Maria Mariano
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Dirac–Schrödinger operators, index theory and spectral flow
Journal of the London Mathematical Society, Volume 112, Issue 4, October 2025.Abstract In this article, we study generalised Dirac–Schrödinger operators in arbitrary signatures (with or without gradings), providing a general KK$\textnormal {KK}$‐theoretic framework for the study of index pairings and spectral flow. We provide a general Callias Theorem, which shows that the index (or the spectral flow, or abstractly the K ...
Koen van den Dungen
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The fractal brain: scale-invariance in structure and dynamics. [PDF]
Cereb Cortex, 2023 Grosu GF +8 more
europepmc +1 more source
Embedding products of trees into higher rank
Journal of the London Mathematical Society, Volume 112, Issue 4, October 2025.Abstract We show that there exists a quasi‐isometric embedding of the product of n$n$ copies of HR2$\mathbb {H}_{\mathbb {R}}^2$ into any symmetric space of non‐compact type of rank n$n$, and there exists a bi‐Lipschitz embedding of the product of n$n$ copies of the 3‐regular tree T3$T_3$ into any thick Euclidean building of rank n$n$ with co‐compact ...
Oussama Bensaid, Thang Nguyen
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