Results 21 to 30 of about 2,049,523 (298)

Multiplicity of the saturated special fiber ring of height two perfect ideals [PDF]

open access: yes, 2019
Let $R$ be a polynomial ring and $I \subset R$ be a perfect ideal of height two minimally generated by forms of the same degree. We provide a formula for the multiplicity of the saturated special fiber ring of $I$. Interestingly, this formula is equal to
Cid-Ruiz, Yairon
core   +4 more sources

Mathematics of gravitational lensing: multiple imaging and magnification [PDF]

open access: yesGeneral Relativity and Gravitation, 2010
The mathematical theory of gravitational lensing has revealed many generic and global properties. Beginning with multiple imaging, we review Morse-theoretic image counting formulas and lower bound results, and complex-algebraic upper bounds in the case of single and multiple lens planes.
M. C. Werner, Arlie O. Petters
openaire   +3 more sources

Non Uniform Projections of Surfaces in $\mathbb{P}^3$ [PDF]

open access: yes, 2017
Consider the projection of a smooth irreducible surface in $\mathbb{P}^3$ from a point. The uniform position principle implies that the monodromy group of such a projection from a general point in $\mathbb{P}^3$ is the whole symmetric group. We will call
Cuzzucoli, Alice   +2 more
core   +4 more sources

A multiplicity result for a fractional Kirchhoff equation in ℝN with a general nonlinearity [PDF]

open access: yesCommunications in Contemporary Mathematics, 2016
In this paper, we deal with the following fractional Kirchhoff equation [Formula: see text] where [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] is a small positive parameter and [Formula: see text] is an odd function ...
V. Ambrosio, Teresa Isernia
semanticscholar   +1 more source

Mathematics of Multiple Sclerosis Theory

open access: yes, 2023
Autoimmune nerve conditions involve the abnormal behavior of the immune system attacking parts of the body’s own tissues, instead of protecting it from dangerous invaders such as viruses and bacteria. Multiple sclerosis (MS) is an autoimmune nerve condition which affects the central nervous system and can cause a range of disabling symptoms from speech
openaire   +1 more source

Learning to Leverage Children's Multiple Mathematical Knowledge Bases in Mathematics Instruction [PDF]

open access: yesJournal of Urban Mathematics Education, 2016
In this article, the authors explore prospective elementary teachers' engagement with and reflection on activities they conducted to learn about a single child from their practicum classroom. Through these activities, prospective teachers learned about their child's mathematical thinking and the interests, competencies, and resources she or he brought ...
Turner, Erin E.   +6 more
openaire   +2 more sources

Some remarks on multiplicity codes

open access: yes, 2014
Multiplicity codes are algebraic error-correcting codes generalizing classical polynomial evaluation codes, and are based on evaluating polynomials and their derivatives.
Kopparty, Swastik
core   +1 more source

The Fate of the Landau Levels under Perturbations of Constant Sign

open access: yes, 2009
We show that the Landau levels cease to be eigenvalues if we perturb the 2D Schr\"odinger operator with constant magnetic field, by bounded electric potentials of fixed sign.
Klopp, Frédéric, Raikov, Georgi
core   +3 more sources

Multiplicity of negative-energy solutions for singular-superlinear Schrödinger equations with indefinite-sign potential [PDF]

open access: yesCommunications in Contemporary Mathematics, 2018
We are concerned with the multiplicity of positive solutions for the singular superlinear and subcritical Schrödinger equation [Formula: see text] beyond the Nehari extremal value, as defined in [Y.
C. Santos, R. Lima, K. Silva
semanticscholar   +1 more source

A Mathematical Analysis of Multiple-Target Selex

open access: yesBulletin of Mathematical Biology, 2010
SELEX (Systematic Evolution of Ligands by Exponential Enrichment) is a procedure by which a mixture of nucleic acids can be fractionated with the goal of identifying those with specific biochemical activities. One combines the mixture with a specific target molecule and then separates the target-NA complex from the resulting reactions.
Yeon-Jung Seo   +3 more
openaire   +4 more sources

Home - About - Disclaimer - Privacy