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A method is described for constructing, with computer assistance, planar substitution tilings that have n-fold rotational symmetry. This method uses as prototiles the set of rhombs with angles that are integer multiples of pi/n, and…

Metric Geometry · Mathematics 2015-10-06 Gregory R. Maloney

Moir\'e patterns of twisted and scaled bilayers have recently emerged as a fertile source of quasiperiodic order in two-dimensional materials. Inspired by these systems, we introduce the \emph{near-coincidence method} for generating…

Materials Science · Physics 2026-04-07 Meshy Ochana , Ron Lifshitz

Owing to their intricate variable density architecture, and as a principal site of star formation, molecular clouds represent one of the most functionally significant, yet least understood features of our universe. To unravel the intrinsic…

Instrumentation and Methods for Astrophysics · Physics 2021-09-08 Nia Imara , John C. Forbes , James C. Weaver

We explore methods to improve the estimates of star formation rates and mean stellar population ages from broadband photometry of high redshift star-forming galaxies. We use synthetic spectral templates with a variety of simple parametric…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Seong-Kook Lee , Henry C. Ferguson , Rachel S. Somerville , Tommy Wiklind , Mauro Giavalisco

We present a model for the formation of massive ($M > 10 M_\odot$) stars through accretion-induced collisions in the cores of embedded dense stellar clusters. This model circumvents the problem of accreting onto a star whose luminosity is…

Astrophysics · Physics 2009-10-30 Ian A. Bonnell , Matthew R. Bate , Hans Zinnecker

Segmented primary mirrors are indispensable to master the steady increase in spatial resolution. Phasing optics systems must reduce segment misalignments to guarantee the high optical quality required for astronomical science programs.…

Instrumentation and Methods for Astrophysics · Physics 2016-07-29 Martinez , Janin-Potiron

The design of crystal materials plays a critical role in areas such as new energy development, biomedical engineering, and semiconductors. Recent advances in data-driven methods have enabled the generation of diverse crystal structures.…

Artificial Intelligence · Computer Science 2025-12-12 Chao Huang , Jiahui Chen , Chen Chen , Chen Chen , Chunyan Chen , Renjie Su , Shiyu Du

In the surface layers of late-type stars, stellar convection is manifested with its typical granulation pattern due to the presence of convective motions. The resulting photospheric up- and downflows leave imprints in the observed spectral…

Solar and Stellar Astrophysics · Physics 2014-05-30 Zazralt Magic , Martin Asplund

We present in this work a new methodology to design kernels on data which is structured with smaller components, such as text, images or sequences. This methodology is a template procedure which can be applied on most kernels on measures…

Machine Learning · Computer Science 2007-05-23 Marco Cuturi , Kenji Fukumizu

We use a suite of high resolution molecular cloud simulations carried out with the moving mesh code Arepo to explore the nature of star-forming filaments. The simulated filaments are identified and categorised from column density maps in…

Astrophysics of Galaxies · Physics 2015-06-22 Rowan J. Smith , Simon C. O. Glover , Ralf. S. Klessen

In this paper, we present a novel method to draw a circle tangent to three given circles lying on a plane. Using the analytic geometry and inversion (reflection) theorems, the center and radius of the inversion circle are obtained. Inside…

History and Overview · Mathematics 2019-06-04 Ahmad Sabihi

We consider the construction of point processes from tilings, with equal volume tiles, of d-dimensional Euclidean space. We show that one can generate, with simple algorithms ascribing one or more points to each tile, point processes which…

Statistical Mechanics · Physics 2009-11-13 Andrea Gabrielli , Michael Joyce , Salvatore Torquato

An algorithm to generate the locus of a circle using the intersection points of straight lines is proposed. The pixels on the circle are plotted independent of one another and the operations involved in finding the locus of the circle from…

Graphics · Computer Science 2008-11-26 Sankar K , Sarad AV

Scanning real-life scenes with modern registration devices typically give incomplete point cloud representations, mostly due to the limitations of the scanning process and 3D occlusions. Therefore, completing such partial representations…

Computer Vision and Pattern Recognition · Computer Science 2021-02-12 Przemysław Spurek , Artur Kasymov , Marcin Mazur , Diana Janik , Sławomir Tadeja , Łukasz Struski , Jacek Tabor , Tomasz Trzciński

Many stars are components of triple-star systems, or of higher-order multiples. In such systems mass transfer is common, and when the transfer is dynamically unstable, a common envelope forms. As such, it is important to be able to compute…

Solar and Stellar Astrophysics · Physics 2026-01-26 Rosanne Di Stefano , Amaan Khwaja , Chiaki Kobayashi

Generative models are a promising tool to produce cosmological simulations but face significant challenges in scalability, physical consistency, and adherence to domain symmetries, limiting their utility as alternatives to $N$-body…

Cosmology and Nongalactic Astrophysics · Physics 2025-08-26 Diana-Alexandra Onutu , Yue Zhao , Joaquin Vanschoren , Vlado Menkovski

Star cluster studies hold the key to understanding star formation, stellar evolution, and origin of galaxies. The detection and characterization of clusters depend on the underlying background density and the cluster richness. We examine…

Astrophysics of Galaxies · Physics 2018-11-07 Srirag Nambiar , Soumyadeep Das , Sarita Vig , Gorthi R. K. S. S. Manyam

Wang tiles enable efficient pattern compression while avoiding the periodicity in tile distribution via programmable matching rules. However, most research in Wang tilings has considered tiling the infinite plane. Motivated by emerging…

Optimization and Control · Mathematics 2023-03-28 Marek Tyburec , Jan Zeman

A new method of matrix template matching is presented in the context of pulsar timing analysis. Pulse arrival times are typically measured using only the observed total intensity light curve. The new technique exploits the additional timing…

Astrophysics · Physics 2017-08-02 W. van Straten

In this paper we introduce a new algebraic method in tilings. Combining this method with Hilbert's Nullstellensatz we obtain a necessary condition for tiling $n$-space by translates of a cluster of cubes. Further, the polynomial method will…

Combinatorics · Mathematics 2016-03-02 Peter Horak , Dongryul Kim
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