Search Results - "Macchia, Antonio"
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Cohen–Macaulay binomial edge ideals and accessible graphs
Published in Journal of algebraic combinatorics (01-06-2022)“…The cut sets of a graph are special sets of vertices whose removal disconnects the graph. They are fundamental in the study of binomial edge ideals, since they…”
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The arithmetical rank of the edge ideals of cactus graphs
Published in Communications in algebra (02-12-2017)“…We prove that, for the edge ideal of a cactus graph, the arithmetical rank is bounded above by the sum of the number of cycles and the maximum height of its…”
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Access to β‑Alkylated γ‑Functionalized Ketones via Conjugate Additions to Arylideneisoxazol-5-ones and Mo(CO)6‑Mediated Reductive Cascade Reactions
Published in ACS omega (15-03-2022)“…1,4-Conjugate addition of ((chloromethyl)sulfonyl)benzenes to arylideneisoxazol-5-ones, followed by one-pot, N-selective trapping in the presence of…”
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4
Methyl 2-(1-methyl-3-oxoisoindolin-1-yl)acetate
Published in MolBank (01-05-2020)“…In this work, we report a facile access to a 3,3-disubstituted isoindolinone by means of Krapcho decarboxylation reaction of the respective substituted…”
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Cohomological dimension and arithmetical rank of some determinantal ideals
Published in Matematiche (01-05-2015)“…Let M be a (2 × n) non-generic matrix of linear forms in a polynomial ring. For large classes of such matrices, we compute the cohomological dimension (cd) and…”
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Minimal Cellular Resolutions of the Edge Ideals of Forests
Published in The Electronic journal of combinatorics (29-05-2020)“…We present an explicit construction of minimal cellular resolutions for the edge ideals of forests, based on discrete Morse theory. In particular, the…”
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7
On determinantal ideals and algebraic dependence
Published in Communications in algebra (03-06-2019)“…Let X be a matrix with entries in a polynomial ring over an algebraically closed field K. We prove that, if the entries of X outside some -submatrix are…”
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Cohen-Macaulay binomial edge ideals of small graphs
Published in Journal of algebra (15-01-2024)“…A combinatorial property that characterizes Cohen-Macaulay binomial edge ideals has long been elusive. A recent conjecture ties the Cohen-Macaulayness of a…”
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9
Combining Realization Space Models of Polytopes
Published in Discrete & computational geometry (01-03-2023)“…In this paper we examine four different models for the realization space of a polytope: the classical model, the Grassmannian model, the Gale transform model,…”
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10
The arithmetical rank of the edge ideals of graphs with whiskers
Published in Beiträge zur Algebra und Geometrie (01-03-2015)“…We consider the edge ideals of large classes of graphs with whiskers and for these ideals we prove that the arithmetical rank is equal to the big height. Then…”
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General non-realizability certificates for spheres with linear programming
Published in Journal of symbolic computation (01-01-2023)“…In this paper we present a simple technique to derive certificates of non-realizability for a combinatorial polytope. Our approach uses a variant of the…”
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12
A Note on Cohen-Macaulay Graphs
Published in Communications in algebra (02-04-2016)“…We show that the edge ideal of a Cohen-Macaulay graph on 2n non-isolated vertices, whose height is n, is always a set-theoretic complete intersection. This…”
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13
A local maximizer for lattice width of 3-dimensional hollow bodies
Published in Discrete Applied Mathematics (31-07-2021)“…The second and fourth authors have conjectured that a certain hollow tetrahedron Δ of width 2+2 attains the maximum lattice width among all three-dimensional…”
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14
Enantioselective Bifunctional Ammonium Salt‐Catalyzed Syntheses of 3‐CF3S‐, 3‐RS‐, and 3‐F‐Substituted Isoindolinones
Published in Advanced synthesis & catalysis (29-03-2021)“…We herein report the ammonium salt‐catalyzed synthesis of chiral 3,3‐disubstituted isoindolinones bearing a heteroatom functionality in the 3‐position. A broad…”
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15
A Zen Master, a Zen Monk, a Zen Mathematician
Published in Nexus network journal (01-07-2018)“…Inspired by the Ryōan-ji garden in Kyoto, we formulate and solve some problems on the arrangement of two sets of points in the plane. We imagine a Zen Master…”
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Data-driven strategies for predictive maintenance: Lesson learned from an automotive use case
Published in Computers in industry (01-01-2022)“…Predictive maintenance is an ever-growing topic of interest, spanning different fields and approaches. In the automotive domain, thanks to on-board sensors and…”
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On the Necessity of One‐Pot Tautomer Trapping in Asymmetric Michael Reactions of Arylideneisoxazol‐5‐ones
Published in European journal of organic chemistry (23-04-2020)“…Herein we report the first asymmetric Michael reaction of arylidene‐isoxazol‐5‐one with 1,3‐diesters. Despite complex tautomer equilibria of the obtained…”
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18
Base-Promoted Cascade Reactions for the Synthesis of 3,3-Dialkylated Isoindolin-1-ones and 3‑Methyleneisoindolin-1-ones
Published in Journal of organic chemistry (05-11-2021)“…Cascade reactions of ortho-carbonyl-substituted benzonitriles with ((chloromethyl)sulfonyl)benzenes as pronucleophiles led to new isoindolin-1-ones with a…”
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19
Enantioselective Bifunctional Ammonium Salt-Catalyzed Syntheses of 3-CF 3 S-, 3-RS-, and 3-F-Substituted Isoindolinones
Published in Advanced synthesis & catalysis (29-03-2021)“…We herein report the ammonium salt-catalyzed synthesis of chiral 3,3-disubstituted isoindolinones bearing a heteroatom functionality in the 3-position. A broad…”
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20
Powers of monomial ideals with characteristic-dependent Betti numbers
Published in Research in the mathematical sciences (01-06-2022)“…We explore the dependence of the Betti numbers of monomial ideals on the characteristic of the field. A first observation is that for a fixed prime p either…”
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