Results 41 to 50 of about 9,476 (202)

Quadratic triangular Bezier patches on quadrics

open access: yesLietuvos Matematikos Rinkinys, 1997
There is not abstract.
Kęstutis Karčiauskas
doaj   +1 more source

The pencil of the 4th and 3rd order surfaces obtained as a harmonic equivalent of the pencil of quadrics through a 4th order space curve of the 1st category [PDF]

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering, 2012
This paper shows the process of inverting the 4th ordered space curve of the first category with a self-intersecting point (with two planes of symmetry) and determining its harmonic equivalent.
Đukanović Gordana, Obradović Marija
doaj   +1 more source

Quadric Veronesean Caps

open access: yesBulletin of the Belgian Mathematical Society - Simon Stevin, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Schillewaert, J., Van Maldeghem, H.
openaire   +3 more sources

Ulrich Bundles on Intersections of Two 4-Dimensional Quadrics [PDF]

open access: yesInternational mathematics research notices, 2017
In this paper, we investigate the moduli space of Ulrich bundles on a smooth complete intersection of two $4$-dimensional quadrics in $\mathbb P^5$. The main ingredient is the semiorthogonal decomposition by Bondal–Orlov, combined with the categorical ...
Yonghwa Cho   +2 more
semanticscholar   +1 more source

Traintrack Calabi-Yaus from twistor geometry

open access: yesJournal of High Energy Physics, 2020
We describe the geometry of the leading singularity locus of the traintrack integral family directly in momentum twistor space. For the two-loop case, known as the elliptic double box, the leading singularity locus is a genus one curve, which we obtain ...
Cristian Vergu, Matthias Volk
doaj   +1 more source

Technobiological Pathways for High‐CO₂ Capture Using Micro‐/Macroalgae: Genetic Engineering, Process Automation, and Value‐Added Bioproducts

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Greenhouse gas (GHG) emissions have emerged as one of the most critical drivers of climate change; this is primarily due to high concentrations and long atmospheric life of carbon dioxide (CO2). For a significant amount of time, various biological processes such as microalgal cultivation, cyanobacterial systems, photosynthetic microorganisms ...
Sadhana Semwal, Harish Chandra Joshi
wiley   +1 more source

Topological Properties of the Intersection Curves Between a Torus and Families of Parabolic or Elliptical Cylinders

open access: yesAxioms
This paper reports the research work carried out with the goal of geometrically and algebraically describing, as well as topologically classifying, the curves resulting from the intersection of a torus with families of parabolic and elliptical cylinders ...
Ana Breda   +2 more
doaj   +1 more source

Lefschetz properties for Artinian Gorenstein algebras presented by quadrics [PDF]

open access: yes, 2016
We introduce a family of standard bigraded binomial Artinian Gorenstein algebras, whose combinatoric structure characterizes the ones presented by quadrics.
Rodrigo Gondim, G. Zappala
semanticscholar   +1 more source

Design of experiments‐driven optimization of Porphyridium marinum cultivation: impact of operational variables on phycoerythrin and exopolysaccharide production

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Among the Porphyridium genus, Porphyridium marinum exhibits the highest phycoerythrin (PE) content. In this study, the metabolic trade‐off between biomass, PE, and sulfated exopolysaccharide (EPS) production was assessed under varying nitrogen and sulfur availability, light intensity, residence time, and cultivation mode.
Rosaria Tizzani   +3 more
wiley   +1 more source

Some Notes about Arrangements of Points on Quadrics

open access: yesМоделирование и анализ информационных систем, 2012
It is considered the minimization of a quadratic polynomial on the set of all points of a multidimensional space, coordinates of which are either zero or one. Some restrictions are imposed on the arrangement of the minimum points when there are many such
A. V. Seliverstov
doaj   +3 more sources

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