Search Results - "Morrison, Ralph"

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  1. 1

    Tropical hyperelliptic curves in the plane by Morrison, Ralph

    Published in Journal of algebraic combinatorics (01-03-2021)
    “…ly, tropical hyperelliptic curves are metric graphs that admit a two-to-one harmonic morphism to a tree. They also appear as embedded tropical curves in the…”
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  2. 2

    The gonality of queen's graphs by Morrison, Ralph, Speeter, Noah

    Published in Discrete mathematics (01-12-2024)
    “…In this paper we study queen's graphs, which encode the moves by a queen on an n×m chess board, through the lens of chip-firing games. We prove that their…”
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  3. 3

    Graphs of scramble number two by Eagleton, Robin, Morrison, Ralph

    Published in Discrete mathematics (01-10-2023)
    “…The scramble number of a graph provides a lower bound for gonality and an upper bound for treewidth, making it a graph invariant of interest. In this paper we…”
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  4. 4

    On the Gonality of Cartesian Products of Graphs by Aidun, Ivan, Morrison, Ralph

    Published in The Electronic journal of combinatorics (24-12-2020)
    “…In this paper we provide the first systematic treatment of Cartesian products of graphs and their divisorial gonality, which is a tropical version of the…”
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  5. 5

    Convex lattice polygons with all lattice points visible by Morrison, Ralph, Tewari, Ayush Kumar

    Published in Discrete mathematics (01-01-2021)
    “…Two lattice points are visible to one another if there exist no other lattice points on the line segment connecting them. In this paper we study convex lattice…”
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  6. 6

    Tropical images of intersection points by Morrison, Ralph

    Published in Collectanea mathematica (Barcelona) (01-05-2015)
    “…A key issue in tropical geometry is the lifting of intersection points to a non-Archimedean field. Here, we ask: where can classical intersection points of…”
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  7. 7

    On the scramble number of graphs by Echavarria, Marino, Everett, Max, Huang, Robin, Jacoby, Liza, Morrison, Ralph, Weber, Ben

    Published in Discrete Applied Mathematics (31-03-2022)
    “…The scramble number of a graph is an invariant recently developed to aid in the study of divisorial gonality. In this paper we prove that scramble number is…”
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  8. 8

    The tropical commuting variety by Morrison, Ralph, Tran, Ngoc M.

    Published in Linear algebra and its applications (15-10-2016)
    “…We study tropical commuting matrices from two viewpoints: linear algebra and algebraic geometry. In classical linear algebra, there exist various criteria to…”
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    Iterated and mixed discriminants by Dickenstein, Alicia, Di Rocco, Sandra, Morrison, Ralph

    Published in Journal of combinatorial algebra (01-01-2023)
    “…Classical work by Salmon and Bromwich classified singular intersections of two quadric surfaces. The basic idea of these results was already pursued by Cayley…”
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  11. 11

    Higher-distance commuting varieties by Elyze, Madeleine, Guterman, Alexander, Morrison, Ralph, Šivic, Klemen

    Published in Linear & multilinear algebra (22-11-2022)
    “…The commuting variety of matrices over a given field is a well-studied object in linear algebra and algebraic geometry. As a set, it consists of all pairs of…”
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  12. 12

    Algorithms for Mumford curves by Morrison, Ralph, Ren, Qingchun

    Published in Journal of symbolic computation (01-05-2015)
    “…Mumford showed that Schottky subgroups of PGL(2,K) give rise to certain curves, now called Mumford curves, over a non-archimedean field K. Such curves are…”
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  13. 13

    Bitangents of tropical plane quartic curves by Baker, Matthew, Len, Yoav, Morrison, Ralph, Pflueger, Nathan, Ren, Qingchun

    Published in Mathematische Zeitschrift (01-04-2016)
    “…We study smooth tropical plane quartic curves and show that they satisfy certain properties analogous to (but also different from) smooth plane quartics in…”
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  14. 14

    Commuting graphs of $p$-adic matrices by Morrison, Ralph

    Published 18-07-2024
    “…We study the commuting graph of $n\times n$ matrices over the field of $p$-adics $\mathbb{Q}_p$, whose vertices are non-scalar $n\times n$ matrices with…”
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  15. 15

    Moduli of tropical plane curves by Brodsky, Sarah, Joswig, Michael, Morrison, Ralph, Sturmfels, Bernd

    Published in Research in the mathematical sciences (01-12-2015)
    “…We study the moduli space of metric graphs that arise from tropical plane curves. There are far fewer such graphs than tropicalizations of classical plane…”
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  16. 16

    Tropically planar graphs by Coles, Desmond, Dutta, Neelav, Jiang, Sifan, Morrison, Ralph, Scharf, Andrew

    “…We study tropically planar graphs, which are the graphs that appear in smooth tropical plane curves. We develop necessary conditions for graphs to be…”
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    Moduli dimensions of lattice polygons by Echavarria, Marino, Everett, Max, Huang, Shinyu, Jacoby, Liza, Morrison, Ralph, Tewari, Ayush K., Vlad, Raluca, Weber, Ben

    Published in Journal of algebraic combinatorics (01-03-2022)
    “…Given a lattice polygon P with g interior lattice points, we can associate to P two moduli spaces: the moduli space of algebraic curves that are non-degenerate…”
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  20. 20

    The Gonality of Queen's Graphs by Morrison, Ralph, Speeter, Noah

    Published 07-12-2023
    “…In this paper we study queen's graphs, which encode the moves by a queen on an $n\times m$ chess board, through the lens of chip-firing games. We prove that…”
    Get full text
    Journal Article