Results 61 to 70 of about 11,009,901 (116)

Finite Bolyai-Lobachevskii planes

, 2011
Finite analogs of the classical Beltrami–Klein model of the Bolyai–Lobachevskii plane arising from ovals, unitals and maximal $(k,n)$-arcs are of interest in finite geometry.
Gábor Korchmáros, Angelo Sonnino, KORCHMAROS, Gabor, SONNINO, Angelo   +3 more
core   +1 more source

A Splitting Architecture for Exact Reduced Coulomb Friction

Computer Graphics Forum, EarlyView.
Abstract Existing approaches to frictional contact dynamics typically either modify the Coulomb law to improve numerical robustness or solve the exact law in a fully coupled monolithic form. However, in its reduced form, exact Coulomb friction can be written as a cone complementarity problem with an augmented velocity, which reveals a natural split ...
Hongcheng Song, Ye Fan, Uri M. Ascher, Dinesh K. Pai   +3 more
wiley   +1 more source

On the (29, 5)-Arcs in PG(2, 7) and Some Generalized Arcs in PG(2, q)

, 2020
Using an exhaustive computer search, we prove that the number of inequivalent ( 29 , 5 ) -arcs in PG ( 2 , 7 ) is exactly 22. This generalizes a result of Barlotti (see Barlotti, A.
Eun Ju Cheon, Tatsuya Maruta, Tsukasa Okazaki, Iliya Bouyukliev   +3 more
core   +1 more source

On irreducible blocking sets in projective planes

, 1991
In a paper of Bruen and Silverman, it is proved that in a Desarguesian projective plane of square order q, q>4, in the interval of the admissible cardinalities of irreducible blocking sets there are integers k such that there is no irreducible blocking ...
MATURO A., INNAMORATI, STEFANO
core   +1 more source

Phylogenetic and ecological duality in the otoliths of Sciaenidae

Cladistics, EarlyView.
Abstract Teleost fishes have evolved taxon‐specific otoliths that vary greatly in size and shape and are primarily involved in hearing and balance. This study identifies the main drivers of otolith shape disparity in Sciaenidae, a clade of sound‐producing bony fishes, using three‐dimensional geometric morphometrics (3DGM).
Dominique Mediodia, Roland B. Sookias, Valentin Fischer, Chien‐Hsiang Lin   +3 more
wiley   +1 more source

Sui blocking set irriducibili dualmente contenuti in un k-arco

, 1993
In this paper we give some constructions of irreducible blocking sets contained in a blocking set k-arc derived.
Fulvio Zuanni, Zuanni, Fulvio
core  

The unrestricted blocking number in convex geometry [PDF]

, 2010
Let K be a convex body in \mathbb{R}^n. We say that a set of translates \left \{ K + \underline{u}_i \right \}_{i=1}^{p} block K if any other translate of K which touches K, overlaps one of K + \underline{u}_i, i = 1, . . . , p.
Sezgin, S.
core  

Bounds for Arcs of Arbitrary Degree in Finite Desarguesian Planes

, 2016
This paper examines subsets with at most n points on a line in the projective plane p q = PG(2, q). A lower bound for the size of complete (k, n)-arcs is established and shown to be a generalisation of a classical result by Barlotti.
E. V. D. Pichanick, J W P Hirschfeld (16059443), E V D Pichanick (16227578), J. W. P. Hirschfeld   +3 more
core   +1 more source

A revised classification system of the marronoid clade of spiders (Araneae), based on dense sampling phylogenomics and comparative morphology

Cladistics, EarlyView.
Abstract The marronoid clade is a globally distributed, ecologically diverse group of spiders. It is an important faunal component in both natural and synanthropic environments, and even found in aquatic and extreme habitats such as desert salt flats. The systematics of the marronoid clade has been notoriously unstable due to the widespread character ...
Jonas O. Wolff, Michael B. J. Kelly, Franklyn Cala‐Riquelme, Jacob A. Gorneau, Katherine O. Montana, Helen M. Smith, Phil J. Sirvid, Cor J. Vink, Lauren A. Esposito, Martín J. Ramírez, Charles E. Griswold   +10 more
wiley   +1 more source

Sui blocking set irriducibili dualmente contenuti in un k-arco

, 1994
In this paper we give some constructions of irreducible blocking sets contained in a blocking set k-arc ...
Zuanni, Fulvio
core