Results 31 to 40 of about 152,344 (258)
Using Elimination Theory to construct Rigid Matrices [PDF]
, 2013 The rigidity of a matrix A for target rank r is the minimum number of entries of A that must be changed to ensure that the rank of the altered matrix is at most r.
Abhinav Kumar +11 more
core +2 more sources
Extending real valuations to skew polynomial rings [PDF]
, 2014 We study Abhyankar valuations of excellent equicharacteristic local domains with an algebraically closed residue field. For zero dimensional valuations we prove that whenever the ring is complete and the semigroup of values taken by the valuation is finitely generated (which implies that the valuation is Abhyankar) the valuation can be uniformized in ...
Herrera Govantes, Francisco Javier +3 more
openaire +36 more sources
Survey on the geometric Bogomolov conjecture [PDF]
, 2017 This is a survey paper of the developments on the geometric Bogomolov conjecture. We explain the recent results by the author as well as previous works concerning the conjecture. This paper also includes an introduction to the height theory over function
Yamaki, Kazuhiko
core +3 more sources
Flexible varieties and automorphism groups [PDF]
, 2012 Given an affine algebraic variety X of dimension at least 2, we let SAut (X) denote the special automorphism group of X i.e., the subgroup of the full automorphism group Aut (X) generated by all one-parameter unipotent subgroups. We show that if SAut (X)
Arzhantsev, I. +4 more
core +2 more sources
Arithmetic of Calabi-Yau Varieties and Rational Conformal Field Theory [PDF]
, 2001 It is proposed that certain techniques from arithmetic algebraic geometry provide a framework which is useful to formulate a direct and intrinsic link between the geometry of Calabi-Yau manifolds and the underlying conformal field theory. Specifically it
Candelas +16 more
core +2 more sources
Algebraic matroids with graph symmetry [PDF]
, 2013 This paper studies the properties of two kinds of matroids: (a) algebraic matroids and (b) finite and infinite matroids whose ground set have some canonical symmetry, for example row and column symmetry and transposition symmetry.
Király, Franz J. +2 more
core +4 more sources
The wave front set of the Fourier transform of algebraic measures [PDF]
, 2014 We study the Fourier transform of the absolute value of a polynomial on a finite-dimensional vector space over a local field of characteristic 0. We prove that this transform is smooth on an open dense set.
Aizenbud, Avraham, Drinfeld, Vladimir
core +1 more source
Uniform approximation of Abhyankar valuation ideals in smooth function fields [PDF]
, 2002 Fix a rank one valuation ν centered at a smooth point x on an algebraic variety over a field of characteristic zero. Assume that ν is Abhyankar, that is, that its rational rank plus its transcendence degree equal the dimension of the variety.
Lawrence Ein +2 more
semanticscholar +1 more source
Hydrogel‐Based Capacitive Sensor Model for Ammonium Monitoring in Aquaculture
Advanced Engineering Materials, EarlyView.Traditional techniques for monitoring aquaculture water quality, particularly ammonium levels, harm fish. This work presents a novel capacitive sensor with an ionic hydrogel transducer to monitor ammonium concentration in real time based on the ammonium‐induced hydrogel dissociation and osmotic pressure. Monitoring aquaculture water quality, especially
Mohammad Mirzaee +3 more
wiley +1 more source
The Weil correspondence and universal special geometry
Journal of High Energy PhysicsThe Weil correspondence states that the datum of a Seiberg-Witten differential is equivalent to an algebraic group extension of the integrable system associated to the Seiberg-Witten geometry. Remarkably this group extension represents quantum consistent
Sergio Cecotti
doaj +1 more source