Results 21 to 30 of about 11,009,901 (116)

A proof of the linearity conjecture for k-blocking sets in PG(n, p(3)), p prime [PDF]

, 2011
In this paper, we show that a small minimal k-blocking set in PG(n,q3), q=ph, h⩾1, p prime, p⩾7, intersecting every (n−k)-space in 1(modq) points, is linear. As a corollary, this result shows that all small minimal k-blocking sets in PG(n,p3), p prime, p⩾
Van de Voorde, Geertrui, G. Van de Voorde, Storme, Leo, L. Storme, M. Lavrauw, LAVRAUW, MICHEL, DE VOORDE GV, STORME L   +7 more
core   +2 more sources

Postcranial anatomy and osteohistology of an early prozostrodont cynodont from the Upper Triassic of Brazil

The Anatomical Record, EarlyView.
Abstract Prozostrodon brasiliensis, a probainognathian cynodont of the clade Prozostrodontia, is recognized as a key taxon for understanding the origin of Mammaliaformes and mammals. Despite detailed investigations of its cranial anatomy, the postcranial skeleton has received comparatively less attention.
Iasmim M. Michelotti, Lívia Roese‐Miron, Brodsky Dantas Macedo Farias, Marina Bento Soares, Leonardo Kerber   +4 more
wiley   +1 more source

Un acaratterizzazione grafica dei k-archi di un piano di Galois di ordine dispari che risultano essere ovali di un sottopiano proprio

, 1981
In an odd order Galois plane we characterize graphically the k-arcs contained in a conic with four projective characters (cfr.B.Segre [9]): actually they are ovals of a proper subplane.Moreover we establish a necessary and sufficient condition for a k ...
Raguso, Grazia, Abatangelo, L. Maria
core   +1 more source

Description of large, well‐preserved Enchodus specimens from the Bearpaw Formation of Alberta, Canada

The Anatomical Record, EarlyView.
Abstract Fishes of the genus Enchodus were abundant and cosmopolitan in the Late Cretaceous, but are primarily known from isolated remains in Canada. Four well‐preserved fish skulls were recovered in recent years from ammolite mines sampling the Bearpaw Formation of Southern Alberta, and are here referred to Enchodus petrosus Cope, 1874.
Luke E. Nelson, Alison M. Murray, Donald B. Brinkman   +2 more
wiley   +1 more source

Anatomy and variation in the paraphyletic Mosasaurus lemonnieri assemblage from the Craie phosphatée de ciply, Belgium

The Anatomical Record, EarlyView.
Abstract Nineteenth century excavations of the Ciply‐Malogne Phosphatic Chalk Formation in Hainaut, Belgium, yielded over 50 partial mosasaur skeletons, the majority of which were referred to the species Mosasaurus lemonnieri Dollo, 1889. In the years since, this taxon has experienced a complicated taxonomic history, and its exceptional hypodigm has ...
Henry S. Sharpe, Hallie P. Street‐Sampson, Takuya Konishi, Michael W. Caldwell   +3 more
wiley   +1 more source

Strong blocking sets and minimal codes from expander graphs [PDF]

, 2023
A strong blocking set in a finite projective space is a set of points that intersects each hyperplane in a spanning set. We provide a new graph theoretic construction of such sets: combining constant-degree expanders with asymptotically good codes, we ...
Alon, Noga, Bishnoi, Anurag, Das, Shagnik, Neri, Alessandro   +3 more
core   +1 more source

Bioerosion traces in bones reveal an increase in ethological diversity in the insect exploitation of carcasses in the late Triassic

The Anatomical Record, EarlyView.
Abstract This study presents the first detailed description of bioerosion traces produced by insects in bones from the Santa Cruz Sequence (early Carnian, Santa Maria Supersequence, Brazil). An array of traces is reported, consisting of notches, a tube, trails of grooves attributed to the ichnotaxon Osteocallis mandibulus and ornamented depressions ...
Lucca S. Cunha, Francesco Battista, Heitor Francischini   +2 more
wiley   +1 more source

Bounds for complete arcs in finite projective planes

, 2016
This thesis uses algebraic and combinatorial methods to study subsets of the Desarguesian plane IIq = PG(2, q). Emphasis, in particular, is given to complete (k, n)-arcs and plane projective curves. Known Diophantine equations for subsets of PG(2, q), no
E V D Pichanick (16227578)
core   +1 more source

Ocular morphology and morphometry of the great egret (Ardea alba): A comprehensive anatomical description

The Anatomical Record, EarlyView.
Abstract Ardea alba (Linnaeus, 1758) is widely distributed, yet knowledge of its ocular morphology remains limited. This study described the morphometry and morphology of the eyeball and its accessory glands in six specimens using radiography, morphometry, light and scanning electron microscopy, and 3D scanning.
Julia Vaz Feio, Max Alex Santos Ferreira, Iara Fernanda Lima do Espírito Santo, Elane Guerreiro Giese, Érika Branco, Antônio Basílio Guerreiro Junior, Ana Rita de Lima   +6 more
wiley   +1 more source

Arcs and blocking sets in symmetric designs

, 1987
The notion of ovals, blocking sets and their connections have been of interest in the study of finite projective planes. The aim of this paper is to generalize these notions and the most considerable theorems in the case of symmetric ...
EUGENI F., INNAMORATI, STEFANO
core