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  • General polygonal line tilings and their matching complexes 

    Bayer, Margaret; Milutinović, Marija Jelić; Vega, Julianne (Elsevier, 2023-03-31)
    A (general) polygonal line tiling is a graph formed by a string of cycles, each intersecting the previous at an edge, no three intersecting. In 2022, Matsushita proved the matching complex of a certain type of polygonal ...
  • Dispersal limitation and fire feedbacks maintain mesic savannas in Madagascar 

    Goel, Nikunj; Van Vleck, Erik S.; Aleman, Julie C.; Staver, A. Carla (Wiley, 2020-09-02)
    Madagascar is regarded by some as one of the most degraded landscapes on Earth, with estimates suggesting that 90% of forests have been lost to indigenous Tavy farming. However, the extent of this degradation has been ...
  • The hyperbolic Anderson model: moment estimates of the Malliavin derivatives and applications 

    Balan, Raluca M.; Nualart, David; Quer-Sardanyons, Lluís; Zheng, Guangqu (Springer, 2022-01-18)
    In this article, we study the hyperbolic Anderson model driven by a space-time colored Gaussian homogeneous noise with spatial dimension d=1,2. Under mild assumptions, we provide Lp-estimates of the iterated Malliavin ...
  • Counting Matrices Over Finite Fields 

    Critzer, Geoffrey (Department of Mathematics, University of Kansas, 2022-12-07)
  • Burch ideals and Burch rings 

    Dao, Hailong; Kobayashi, Toshinori; Takahashi, Ryo (Mathematical Sciences Publishers (MSP), 2020-09-18)
    We introduce the notion of Burch ideals and Burch rings. They are easy to define, and can be viewed as generalization of many well-known concepts, for example integrally closed ideals of finite colength and Cohen–Macaulay ...
  • Averaging Gaussian functionals 

    Nualart, David; Zheng, Guangqu (Institute of Mathematical Statistics, 2020-04-28)
    This paper consists of two parts. In the first part, we focus on the average of a functional over shifted Gaussian homogeneous noise and as the averaging domain covers the whole space, we establish a Breuer-Major type ...
  • Intermittency for the parabolic Anderson model of Skorohod type driven by a rough noise 

    Ma, Nicholas; Nualart, David; Xia, Panqiu (Institute of Mathematical Statistics, 2020-07-14)
    In this paper, we study the parabolic Anderson model of Skorohod type driven by a fractional Gaussian noise in time with Hurst parameter H ∈ (0, 1/2). By using the Feynman-Kac representation for the L^p (Ω) moments of the ...
  • Fractional Diffusion in Gaussian Noisy Environment 

    Hu, Guannan; Hu, Yaozhong (MDPI, 2015-03-31)
    We study the fractional diffusion in a Gaussian noisy environment as described by the fractional order stochastic heat equations of the following form: D(α)tu(t,x)=Bu+u⋅W˙H, where D(α)t is the Caputo fractional derivative ...
  • On the (non)rigidity of the Frobenius endomorphism over Gorenstein rings 

    Dao, Hailong; Li, Jinjia; Miller, Claudia (Mathematical Sciences Publishers (MSP), 2011-02-24)
    It is well-known that for a large class of local rings of positive characteristic, including complete intersection rings, the Frobenius endomorphism can be used as a test for finite projective dimension. In this paper, we ...
  • An adaptive spot placement method on Cartesian grid for pencil beam scanning proton therapy 

    Lin, Bowen; Fu, Shujun; Lin, Yuting; Rotondo, Ronny L.; Huang, Weizhang; Li, Harold H.; Chen, Ronald C.; Gao, Hao (IOP Publishing, 2021-12-02)
    Pencil beam scanning proton radiotherapy (RT) offers flexible proton spot placement near treatment targets for delivering tumoricidal radiation dose to tumor targets while sparing organs-at-risk. Currently the spot placement ...
  • Unique Factorization Domains in Commutative Algebra 

    Huang, Yongjian (Department of Mathematics, University of Kansas, 2021-05-20)
    In this project, we learn about unique factorization domains in commutative algebra. Most importantly, we explore the relation between unique factorization domains and regular local rings, and prove the main theorem: If R ...
  • Initial-boundary value problems for a reaction-diffusion equation 

    Himonas, A. Alexandrou; Mantzavinos, Dionyssios; Yan, Fangchi (American Institute of Physics, 2019-08-27)
    A novel approach that utilizes Fokas’s unified transform is employed for studying a reaction-diffusion equation with power nonlinearity formulated either on the half-line or on a finite interval with data in Sobolev spaces. ...
  • A General Stochastic Volatility Model on VIX Options 

    Cui, Yanhao (University of Kansas, 2019-12-31)
    Abstract In this dissertation, we study a general stochastic volatility model for the VIX options (Chicago Board Options Exchange) volatility index, which is a stochastic differential equation with 8 unknown parameters. ...
  • On the Generation of Stable Kerr Frequency Combs in the Lugiato--Lefever Model of Periodic Optical Waveguides 

    Hakkaev, Sevdzhan; Stanislavova, Milena; Stefanov, Atanas G. (Society for Industrial and Applied Mathematics, 2019-03-07)
  • The Korteweg-de Vries equation on an interval 

    Himonas, A. Alexandrou; Mantzavinos, Dionyssios; Yan, Fangchi (American Institute of Physics, 2019-05-08)
    The initial-boundary value problem (IBVP) for the Korteweg-de Vries (KdV) equation on an interval is studied by extending a novel approach recently developed for the well-posedness of the KdV on the half-line, which is ...
  • Finitary isomorphisms of Poisson point processes 

    Soo, Terry; Wilkens, Amanda (Institute of Mathematical Statistics, 2019-10-22)
    As part of a general theory for the isomorphism problem for actions of amenable groups, Ornstein and Weiss (J. Anal. Math. 48 (1987) 1–141) proved that any two Poisson point processes are isomorphic as measure-preserving ...
  • A weighted cellular matrix-tree theorem, with applications to complete colorful and cubical complexes 

    Aalipour, Ghodratollah; Duval, Art M.; Kook, Woong; Lee, Kang-Ju; Martin, Jeremy L. (Elsevier, 2018-03-26)
    We present a version of the weighted cellular matrix-tree theorem that is suitable for calculating explicit generating functions for spanning trees of highly structured families of simplicial and cell complexes. We apply ...
  • Counting arithmetical structures on paths and cycles 

    Braun, Benjamin; Corrales, Hugo; Corry, Scott; Puente, Luis David García; Glass, Darren; Kaplan, Nathan; Martin, Jeremy L.; Musiker, Gregg; Valencia, Carlos E. (Elsevier, 2018-07-27)
    Let G be a finite, connected graph. An arithmetical structure on G is a pair of positive integer vectors d, r such that (diag(d)-A)r = 0, where A is the adjacency matrix of G. We investigate the combinatorics of arithmetical ...
  • Increasing spanning forests in graphs and simplicial complexes 

    Hallam, Joshua; Martin, Jeremy L.; Sagan, Bruce E. (Elsevier, 2018-11-01)
    Let G be a graph with vertex set {1,...,n}. A spanning forest F of G is increasing if the sequence of labels on any path starting at the minimum vertex of a tree of F forms an increasing sequence. Hallam and Sagan showed ...
  • A positivity phenomenon in Elser's Gaussian-cluster percolation model 

    Dorpalen-Barry, Galen; Hettle, Cyrus; Livingston, David C.; Martin, Jeremy L.; Nasr, George D.; Vega, Julianne; Whitlatch, Hays (Elsevier, 2020-12-18)
    Veit Elser proposed a random graph model for percolation in which physical dimension appears as a parameter. Studying this model combinatorially leads naturally to the consideration of numerical graph invariants which we ...

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