Results 11 to 20 of about 572 (177)
Embeddings of Ree unitals in a projective plane over a field [PDF]
We show that the Ree unital $\mathcal{R}(q)$ has an embedding in a projective plane over a field $F$ if and only if $q=3$ and $\mathbb{F}_8$ is a subfield of $F$. In this case, the embedding is unique up to projective linear transformations. Besides elementary calculations, our proof uses the classification of the maximal subgroups of the simple Ree ...
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Unravelling the origins and P-T-t evolution of the allochthonous Sobrado unit (Órdenes Complex, NW Iberia) using combined U-Pb titanite, monazite and zircon geochronology and REE geochemistry [PDF]
Abstract. The Sobrado unit, within the upper part of the Órdenes complex (NW Iberia) represents an allochthonous tectonic slice of exhumed high grade metamorphic rocks formed during a complex sequence of orogenic processes in the middle to lower crust.
José Manuel Benítez-Pérez +5 more
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Arcs and Ovals in the Hermitian and Ree Unitals
An s-arc in a \(2-(q^ 3+1,q+1,1)\) design is a set of s points meeting no block in more than 2 points. It is called an oval if \(s=q^ 2+1\) and q is odd or if \(s=q^ 2\) and q is even. The 2-transitive examples of such designs are the Hermitian and the Ree unitals (where \(q-3^{2m+1})\). For \(q>2\), the Hermitian unitals are shown not to possess ovals
Edward F. Assmus Jr., Jennifer D. Key
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Large pegmatite body/bodies are outcropping in the “Suhata Reka” quarry, near the town of Rakitovo. Their bulk mineral composition with dominant K-feldspar (40%), plagioclase (30%), quartz (25%) and mica (≤ 5%) is complemented by (REE+Y)-bearing association of primary and secondary accessories.
Rossitsa D. Vassileva +5 more
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Bands of Zircon, Allanite and Magnetite in Paleozoic Alkali Granite in the Chungju Unit, South Korea, and Origin of REE Mineralizations [PDF]
High-grade Zr–Nb–Y–rare earth element (REE) mineralization occurs as zircon–allanite–magnetite bands in layered Paleozoic alkali rocks which intruded the Gyemyeongsan Formation of the Chungju unit, South Korea. The mineralization period and genesis have been controversial.
Sang-Gun No, Maeng-Eon Park
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Torsion units for a Ree group, Tits group and a Steinberg triality group [PDF]
The author studies the well-known Zassenhaus conjecture for the integral group rings of the Steinberg simple group of Lie type \(^3D_4(2^3)\), the Ree group of Lie type \(^2F_4(2)\), and its commutator subgroup, the sporadic simple group of Tits, namely, that a torsion normalized unit is conjugate to some group element in the rational group algebra in ...
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Design of Area and Power Efficient Multiplier Unit using Wallace T ree Algorithm
In any processing system, the core data path element may be a multiplier that particularly associated with DSP applications, which concludes overall processing unit performance. In such system, the multiplier unit improves the performance will boost up the potential.
R. Krishnaveni* +4 more
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Abstract Premise We examined the African arid corridor (AAC) disjunction pattern of vascular plants between northeastern and southwestern Africa in the context of geological and climatic events since the late Miocene. We developed a phylogenetic and biogeographical framework for the arid‐adapted genus Sesamothamnus (Pedaliaceae), a classic example of ...
John G. Zaborsky +6 more
wiley +1 more source
ABSTRACT Diagnoses of autism spectrum disorder in Australia have increased considerably in recent years. The current study investigated how the National Disability Insurance Scheme (NDIS) impacts quality of life (QoL) among carers of children with autism spectrum disorder.
Jesse Gerhard, Sharon L. Grant
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Rees algebras of unit interval determinantal facet ideals
17 pages.
Ayah Almousa +2 more
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