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THE REFLEX-FREE HULL
2004
International journal of computational geometry and applications
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We propose a hull operator, the reflex-free hull, that allows us to define a 3D analogue to bays in polygons. ...
The reflex-free hull is related to identifying cavities in computer aided design and manufacturing, but we sketch examples to indicate that computing a reflex-free hull will be a challenging problem. * ...
Acknowledgments We thank Herbert Edelsbrunner and Sergei Bespamyatnikh for discussions on the relation of this problem to casting and other hulls. ...
doi:10.1142/s0218195904001548
fatcat:2daehg46qbaa5fr7k7adupyaym
Shooting Permanent Rays among Disjoint Polygons in the Plane
2012
SIAM journal on computing (Print)
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obstacles with a total of n vertices in the plane, a permutation of the reflex vertices, and a half-line at each reflex vertex that partitions the reflex angle into two convex angles, then the convex partitioning ...
We present a data structure for ray shooting and insertion in the free space between disjoint polygonal obstacles with a total of n vertices in the plane, where each ray starts at the boundary of some ...
Fig. 8 . 8 (a) The reflex vertices of the free space Cu \ ( P) are marked with empty circles; the free space has two domains D 1 and D 2 . ...
doi:10.1137/100804310
fatcat:m2qdeqgnnnbudes7wcykr7u5jm
Shooting permanent rays among disjoint polygons in the plane
2009
Proceedings of the 25th annual symposium on Computational geometry - SCG '09
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obstacles with a total of n vertices in the plane, a permutation of the reflex vertices, and a half-line at each reflex vertex that partitions the reflex angle into two convex angles, then the convex partitioning ...
We present a data structure for ray shooting and insertion in the free space between disjoint polygonal obstacles with a total of n vertices in the plane, where each ray starts at the boundary of some ...
Fig. 8 . 8 (a) The reflex vertices of the free space Cu \ ( P) are marked with empty circles; the free space has two domains D 1 and D 2 . ...
doi:10.1145/1542362.1542372
dblp:conf/compgeom/IshaqueST09
fatcat:rfpvi5zswjhs7bceufibsedcgi
Rank 2 Sheaves on Toric 3-Folds: Classical and Virtual Counts
2017
International mathematics research notices
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2015 pre-print arXiv:1509.03536v1 fatcat:uh5rgdhxkjbsrmb7lg3aa2h2myOther Versions
Connected components of M^T with constant reflexive hulls are isomorphic to products of P^1. ...
Let M be the moduli space of rank 2 stable torsion free sheaves with Chern classes c_i on a smooth 3-fold X. When X is toric with torus T, we describe the T-fixed locus of the moduli space. ...
These reflexive hulls have c 2 = 2. • The reflexive hulls of Example 4.11. Recall that these reflexive hulls have c 2 = 1. ...
doi:10.1093/imrn/rnw302
fatcat:m7mdw7acc5cgfb4lp3fkjd6xze
Compatibility relations on codes and free monoids
2008
RAIRO - Theoretical Informatics and Applications
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Let X ⊆ A + be a finite set and let B be the base of the free hull of X. ...
Let X ⊆ A + be a finite set and let B be the base of the free hull of X. ...
doi:10.1051/ita:2008016
fatcat:hlzbwjbadfbzblmd7qhbbhvtj4
Page 95 of The Journal of the Royal Anthropological Institute Vol. 17, Issue 1
[page]
2011
The Journal of the Royal Anthropological Institute
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for the gathering of dispersed information (Hayek 1945; Hull 2006). ...
In the process, Hayek laid the intellectual cornerstone for the foundation of neoclassical economics (Hull 2006). ...
On nonstandard hulls of convex spaces
1976
Canadian Journal of Mathematics - Journal Canadien de Mathematiques
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The question of invariance of nonstandard hulls being equivalent to inductive semi-reflexivity and bounded sets being precompact, is left open. ...
If the nonstandard hulls of a TVS are independent of the non-standard model, we say that the TVS has invariant nonstandard hulls. ...
Let N be the set of natural numbers and let X be the set or real valued functions on N with finite support. Let °U be a free ultra-filter on N. ...
doi:10.4153/cjm-1976-017-x
fatcat:cjavemla6jbyplmkdhewvygfxm
Cutting Out Polygons with a Circular Saw
[chapter]
2011
Lecture Notes in Computer Science
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This improves the previous approximation ratio of 2.5 obtained by Demaine et al. in 2001. ...
Given a simple (cuttable) polygon Q drawn on a piece of planar material R, we cut Q out of R by a (small) circular saw with a total number of cuts no more than twice the optimal. ...
Each pocket is defined by an edge of the convex hull, which we call the lid of the pocket. For each edge of the convex hull we make a cut along the edge. ...
doi:10.1007/978-3-642-25591-5_25
fatcat:hlu7swryg5baplu4aozr7fcl3u
CUTTING OUT POLYGONS WITH A CIRCULAR SAW
2013
International journal of computational geometry and applications
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This improves the previous approximation ratio of 2.5 obtained by Demaine et al. in 2001. ...
Given a simple (cuttable) polygon Q drawn on a piece of planar material R, we cut Q out of R by a (small) circular saw with a total number of cuts no more than twice the optimal. ...
Each pocket is defined by an edge of the convex hull, which we call the lid of the pocket. For each edge of the convex hull we make a cut along the edge. ...
doi:10.1142/s0218195913600030
fatcat:wpo2zovy3fb6hepu7lzsvph4di
Wind Tunnel Investigation into the Resistance Analysis of Slender Body Catamaran
2020
Kapal
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Pressure around the hull was measured using pressure tappings and the flow velocity behind the hull was also measured using a Pitôt-static tube. ...
The tests demonstrated a viscous interaction between the hulls, and form factors for the monohull and catamaran are derived. ...
Acknowledgements The first authors wished to thank the Directorate of Research and Community Engagement (DPRM) of the Institut Teknologi Sepuluh Nopember (ITS), which funded part of the work under a research ...
doi:10.14710/kapal.v17i2.29867
fatcat:wn3i4j5sf5bbzjxndacgnbevyq
Numerical Investigation into the Pressure and Flow Velocity Distributions of a Slender-Body Catamaran Due to Viscous Interference Effects
2021
International Journal of Technology
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Pressure and flow velocity around the hull were measured to obtain a fluid effect attributed to the influence of catamaran hull interference. ...
The form factor for the catamaran was consistently higher than the demihull, suggesting some viscous interference between the hulls. ...
Acknowledgements The authors wish to thank the Ministry of Research, Technology, and Higher Education (Kemristekdikti) and the Institut Teknologi Sepuluh Nopember (ITS) for funding the current work under ...
doi:10.14716/ijtech.v12i1.4269
fatcat:vwc3epe5zff75hvecmjldnhmfy
Page 65 of Psychological Bulletin Vol. 34, Issue 2
[page]
1937
Psychological Bulletin
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If the principles discovered in conditioned response
5 While Hull does not use the reflex as a building-block, his S-R diagrams indicate that this position is not entirely free from elementarism. ...
Complex behavior is deduced from principles of action discovered in conditioned response experi- ments ; it is not synthesized by an assemblage of simple conditioned reflexes, Hull (87, p. 227).° As we ...
Page 65 of Psychological Bulletin Vol. 34, Issue 2
[page]
1937
Psychological Bulletin
Preserved Fulltext
The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
If the principles discovered in conditioned response
5 While Hull does not use the reflex as a building-block, his S-R diagrams indicate that this position is not entirely free from elementarism. ...
Complex behavior is deduced from principles of action discovered in conditioned response experi- ments ; it is not synthesized by an assemblage of simple conditioned reflexes, Hull (87, p. 227).° As we ...
Algebra and local presentability: how algebraic are they? (A survey)
2017
Tbilisi Mathematical Journal
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This is a survey of results concerning the algebraic hulls of two 2-categories: VAR, the 2- category of finitary varieties, and LFP, the 2-category of locally finitely presentable categories. ...
We are grateful to the referee for suggestions which improved our presentation. ...
The free completion of a category K under sifted colimits is denoted Sind K 2.4 Proposition. ([7]) For every category K with finite coproducts Sind K is obtained by completing Ind K freely under reflexive ...
doi:10.1515/tmj-2017-0113
fatcat:7lvwu47hqbek7ob4cqnererava
Ehrhart series, unimodality, and integrally closed reflexive polytopes
[article]
2014
arXiv
pre-print
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In this paper, we consider integrally closed reflexive simplices and discuss an operation that preserves reflexivity, integral closure, and unimodality of the h^*-vector, providing one explanation for ...
We also discuss the failure of proving unimodality in this setting using weak Lefschetz elements. ...
that are the convex hull of the origin and all but one of the vertices of ∆ Q . ...
arXiv:1403.5378v3
fatcat:i3gf52ju4nh45jep2sb3ah4mcq
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