Search Results - "Michałek, Mateusz"
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Many Faces of Symmetric Edge Polytopes
Published in The Electronic journal of combinatorics (29-07-2022)“…Symmetric edge polytopes are a class of lattice polytopes constructed from finite simple graphs. In the present paper we highlight their connections to the…”
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2
Interlacing Ehrhart polynomials of reflexive polytopes
Published in Selecta mathematica (Basel, Switzerland) (01-10-2017)“…It was observed by Bump et al. that Ehrhart polynomials in a special family exhibit properties shared by the Riemann ζ function. The construction was…”
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Non-Normal Very Ample Polytopes - Constructions and Examples
Published in Experimental mathematics (03-04-2017)“…We answer several questions posed by Beck, Cox, Delgado, Gubeladze, Haase, Hibi, Higashitani, and Maclagan in [ Cox et al. 14 , Question 3.5 (1),(2), Question…”
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A Short Proof of Combinatorial Nullstellensatz
Published in The American mathematical monthly (01-11-2010)“…In this note we give a short, direct proof of the combinatorial Nullstellensatz…”
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5
Quantum Version of Wielandt's Inequality Revisited
Published in IEEE transactions on information theory (01-08-2019)“…Consider a linear space <inline-formula> <tex-math notation="LaTeX">L </tex-math></inline-formula> of complex <inline-formula> <tex-math notation="LaTeX">D…”
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Secants of minuscule and cominuscule minimal orbits
Published in Linear algebra and its applications (15-09-2015)“…We study the geometry of the secant and tangential variety of a cominuscule and minuscule variety, e.g. a Grassmannian or a spinor variety. Using methods…”
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Algebraic compressed sensing
Published in Applied and computational harmonic analysis (01-07-2023)“…We introduce the broad subclass of algebraic compressed sensing problems, where structured signals are modeled either explicitly or implicitly via polynomials…”
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Abelian tensors
Published in Journal de mathématiques pures et appliquées (01-09-2017)“…We analyze tensors in Cm⊗Cm⊗Cm satisfying Strassen's equations for border rank m. Results include: two purely geometric characterizations of the…”
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Gorenstein Matroids
Published in International mathematics research notices (21-09-2023)“…Abstract Matroid base polytope and independence polytope are Cohen–Macaulay. There are plenty of examples when they are also Gorenstein. We provide a full…”
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Bounds on complexity of matrix multiplication away from Coppersmith–Winograd tensors
Published in Journal of pure and applied algebra (01-12-2022)“…We present three families of minimal border rank tensors: they come from highest weight vectors, smoothable algebras, and monomial algebras. We analyze them…”
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Uniform matrix product states from an algebraic geometer's point of view
Published in Advances in applied mathematics (01-01-2023)“…We apply methods from algebraic geometry to study uniform matrix product states. Our main results concern the topology of the locus of tensors expressed as…”
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Vanishing Hessian, wild forms and their border VSP
Published in Mathematische annalen (01-12-2020)“…Wild forms are homogeneous polynomials whose smoothable rank is strictly larger than their border rank. The discrepancy between these two ranks is caused by…”
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13
Flexible affine cones and flexible coverings
Published in Mathematische Zeitschrift (01-12-2018)“…We provide a new criterion for flexibility of affine cones over varieties covered by flexible affine varieties. We apply this criterion to prove flexibility of…”
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14
Khovanskii bases for semimixed systems of polynomial equations – Approximating stationary nonlinear Newtonian dynamics
Published in Journal de mathématiques pures et appliquées (01-02-2024)Get full text
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15
Splitting necklaces and measurable colorings of the real line
Published in Proceedings of the American Mathematical Society (01-05-2009)“…A (continuous) \emph {necklace} is simply an interval of the real line colored measurably with some number of colors. A well-known application of the…”
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Constructive degree bounds for group-based models
Published in Journal of combinatorial theory. Series A (01-09-2013)“…Group-based models arise in algebraic statistics while studying evolution processes. They are represented by embedded toric algebraic varieties. Both from the…”
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On the toric ideal of a matroid
Published in Advances in mathematics (New York. 1965) (10-07-2014)“…Describing minimal generating set of a toric ideal is a well-studied and difficult problem. In 1980 White conjectured that the toric ideal associated to a…”
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18
Exponential varieties
Published in Proceedings of the London Mathematical Society (01-01-2016)“…Exponential varieties arise from exponential families in statistics. These real algebraic varieties have strong positivity and convexity properties, familiar…”
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Spaces of sums of powers and real rank boundaries
Published in Beiträge zur Algebra und Geometrie (01-11-2018)“…We investigate properties of Waring decompositions of real homogeneous forms. We study the moduli of real decompositions, so-called Space of Sums of Powers,…”
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Ideals of spaces of degenerate matrices
Published in Linear algebra and its applications (01-09-2022)“…The variety Singn,m consists of all tuples X=(X1,…,Xm) of n×n matrices such that every linear combination of X1,…,Xm is singular. Equivalently, X∈Singn,m if…”
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