## Volume 14, 2018

 Singular Degenerations of Lie Supergroups of Type $D(2,1;a)$ Kenji Iohara and Fabio Gavarini SIGMA 14 (2018), 137, 36 pages [ abs   pdf ] Fundamental Solutions and Gegenbauer Expansions of Helmholtz Operators in Riemannian Spaces of Constant Curvature Howard S. Cohl, Thinh H. Dang and T.M. Dunster SIGMA 14 (2018), 136, 45 pages [ abs   pdf ] Higher-Order Analogs of Lie Algebroids via Vector Bundle Comorphisms Michał Jóźwikowski and Mikołaj Rotkiewicz SIGMA 14 (2018), 135, 46 pages [ abs   pdf ] A Product on Double Cosets of $B_\infty$ Pablo Gonzalez Pagotto SIGMA 14 (2018), 134, 18 pages [ abs   pdf ] Field Theory with Coordinate Dependent Noncommutativity Daniel N. Blaschke, François Gieres, Stefan Hohenegger, Manfred Schweda and Michael Wohlgenannt SIGMA 14 (2018), 133, 35 pages [ abs   pdf ] Elliptic Dynamical Quantum Groups and Equivariant Elliptic Cohomology Giovanni Felder, Richárd Rimányi and Alexander Varchenko SIGMA 14 (2018), 132, 41 pages [ abs   pdf ] Eigenvalue Problems for Lamé's Differential Equation Hans Volkmer SIGMA 14 (2018), 131, 21 pages [ abs   pdf ] On Gradings Modulo 2 of Simple Lie Algebras in Characteristic 2 Andrey Krutov and Alexei Lebedev SIGMA 14 (2018), 130, 27 pages [ abs   pdf ] Aspects of the Topology and Combinatorics of Higgs Bundle Moduli Spaces Steven Rayan SIGMA 14 (2018), 129, 18 pages [ abs   pdf ] Deformations of Pre-Symplectic Structures: a Dirac Geometry Approach Florian Schätz and Marco Zambon SIGMA 14 (2018), 128, 12 pages [ abs   pdf ] Parallels between Moduli of Quiver Representations and Vector Bundles over Curves Victoria Hoskins SIGMA 14 (2018), 127, 46 pages [ abs   pdf ] Structure Relations of Classical Orthogonal Polynomials in the Quadratic and $q$-Quadratic Variable Maurice Kenfack Nangho and Kerstin Jordaan SIGMA 14 (2018), 126, 26 pages [ abs   pdf ] On the Increasing Tritronquée Solutions of the Painlevé-II Equation Peter D. Miller SIGMA 14 (2018), 125, 38 pages [ abs   pdf ] Morita Invariance of Intrinsic Characteristic Classes of Lie Algebroids Pedro Frejlich SIGMA 14 (2018), 124, 12 pages [ abs   pdf ] On Solutions of the Fuji-Suzuki-Tsuda System Pavlo Gavrylenko, Nikolai Iorgov and Oleg Lisovyy SIGMA 14 (2018), 123, 27 pages [ abs   pdf ] Quadratic Differential Equations in Three Variables without Multivalued Solutions: Part I Adolfo Guillot SIGMA 14 (2018), 122, 46 pages [ abs   pdf ] Matrix Bailey Lemma and the Star-Triangle Relation Kamil Yu. Magadov and Vyacheslav P. Spiridonov SIGMA 14 (2018), 121, 13 pages [ abs   pdf ] Simple Lax Description of the ILW Hierarchy Alexandr Buryak and Paolo Rossi SIGMA 14 (2018), 120,   7 pages [ abs   pdf ] Initial-Boundary Value Problem for Stimulated Raman Scattering Model: Solvability of Whitham Type System of Equations Arising in Long-Time Asymptotic Analysis Rustem R. Aydagulov and Alexander A. Minakov SIGMA 14 (2018), 119, 19 pages [ abs   pdf ] Integral Regulators for Higher Chow Complexes Muxi Li SIGMA 14 (2018), 118, 12 pages [ abs   pdf ] Truncated Solutions of Painlevé Equation ${\rm P}_{\rm V}$ Rodica D. Costin SIGMA 14 (2018), 117, 14 pages [ abs   pdf ] Normal Functions over Locally Symmetric Varieties Ryan Keast and Matt Kerr SIGMA 14 (2018), 116, 18 pages [ abs   pdf ] The Smallest Singular Values and Vector-Valued Jack Polynomials Charles F. Dunkl SIGMA 14 (2018), 115, 20 pages [ abs   pdf ] Characterizing Moonshine Functions by Vertex-Operator-Algebraic Conditions Scott Carnahan, Takahiro Komuro and Satoru Urano SIGMA 14 (2018), 114,   8 pages [ abs   pdf ] Three-Parameter Solutions of the PV Schlesinger-Type Equation near the Point at Infinity and the Monodromy Data Shun Shimomura SIGMA 14 (2018), 113, 50 pages [ abs   pdf ] Strictly Positive Definite Functions on Compact Two-Point Homogeneous Spaces: the Product Alternative Rafaela N. Bonfim, Jean C. Guella and Valdir A. Menegatto SIGMA 14 (2018), 112, 14 pages [ abs   pdf ] The Moduli Spaces of Parabolic Connections with a Quadratic Differential and Isomonodromic Deformations Arata Komyo SIGMA 14 (2018), 111, 22 pages [ abs   pdf ] Zhegalkin Zebra Motives Digital Recordings of Mirror Symmetry Jan Stienstra SIGMA 14 (2018), 110, 29 pages [ abs   pdf ] Inverse of Infinite Hankel Moment Matrices Christian Berg and Ryszard Szwarc SIGMA 14 (2018), 109, 48 pages [ abs   pdf ] Hyper-Algebras of Vector-Valued Modular Forms Martin Raum SIGMA 14 (2018), 108, 17 pages [ abs   pdf ] Large $z$ Asymptotics for Special Function Solutions of Painlevé II in the Complex Plane Alfredo Deaño SIGMA 14 (2018), 107, 19 pages [ abs   pdf ] Generalized Hermite Polynomials and Monodromy-Free Schrödinger Operators Victor Yu. Novokshenov SIGMA 14 (2018), 106, 13 pages [ abs   pdf ] Quantum Abelian Yang-Mills Theory on Riemannian Manifolds with Boundary Homero G. Díaz-Marín and Robert Oeckl SIGMA 14 (2018), 105, 31 pages [ abs   pdf ] Drinfeld-Sokolov Hierarchies, Tau Functions, and Generalized Schur Polynomials Mattia Cafasso, Ann du Crest de Villeneuve and Di Yang SIGMA 14 (2018), 104, 17 pages [ abs   pdf ] Virtual Crystals and Nakajima Monomials Ben Salisbury and Travis Scrimshaw SIGMA 14 (2018), 103, 19 pages [ abs   pdf ] Hesse Pencils and 3-Torsion Structures Ane S.I. Anema, Jaap Top and Anne Tuijp SIGMA 14 (2018), 102, 13 pages [ abs   pdf ] Macdonald Polynomials of Type $C_n$ with One-Column Diagrams and Deformed Catalan Numbers Ayumu Hoshino and Jun'ichi Shiraishi SIGMA 14 (2018), 101, 33 pages [ abs   pdf ] Morita Equivalent Blocks of Symmetric Groups Benjamin Sambale SIGMA 14 (2018), 100,   8 pages [ abs   pdf ] Generalized Lennard-Jones Potentials, SUSYQM and Differential Galois Theory Manuel F. Acosta-Humánez, Primitivo B. Acosta-Humánez and Erick Tuirán SIGMA 14 (2018), 099, 21 pages [ abs   pdf ] Anti-Yetter-Drinfeld Modules for Quasi-Hopf Algebras Ivan Kobyzev and Ilya Shapiro SIGMA 14 (2018), 098, 10 pages [ abs   pdf ] A Note on the Formal Groups of Weighted Delsarte Threefolds Yasuhiro Goto SIGMA 14 (2018), 097, 12 pages [ abs   pdf ] The Variational Bi-Complex for Systems of Semi-Linear Hyperbolic PDEs in Three Variables Sara Froehlich SIGMA 14 (2018), 096, 49 pages [ abs   pdf ] Tronquée Solutions of the Third and Fourth Painlevé Equations Xiaoyue Xia SIGMA 14 (2018), 095, 28 pages [ abs   pdf ] Higher Obstructions of Complex Supermanifolds Kowshik Bettadapura SIGMA 14 (2018), 094, 12 pages [ abs   pdf ] A Riemann-Hilbert Approach to the Heun Equation Boris Dubrovin and Andrei Kapaev SIGMA 14 (2018), 093, 24 pages [ abs   pdf ] An Infinite Family of Maximally Superintegrable Systems in a Magnetic Field with Higher Order Integrals Antonella Marchesiello and Libor Šnobl SIGMA 14 (2018), 092, 11 pages [ abs   pdf ] Painlevé IV Critical Asymptotics for Orthogonal Polynomials in the Complex Plane Marco Bertola, José Gustavo Elias Rebelo and Tamara Grava SIGMA 14 (2018), 091, 34 pages [ abs   pdf ] Computing Special $L$-Values of Certain Modular Forms with Complex Multiplication Wen-Ching Winnie Li, Ling Long and Fang-Ting Tu SIGMA 14 (2018), 090, 32 pages [ abs   pdf ] On Lagrangians with Reduced-Order Euler-Lagrange Equations David Saunders SIGMA 14 (2018), 089, 13 pages [ abs   pdf ] Discrete Orthogonal Polynomials with Hypergeometric Weights and Painlevé VI Galina Filipuk and Walter Van Assche SIGMA 14 (2018), 088, 19 pages [ abs   pdf ] Notes on Non-Generic Isomonodromy Deformations Davide Guzzetti SIGMA 14 (2018), 087, 34 pages [ abs   pdf ] A Hypergeometric Version of the Modularity of Rigid Calabi-Yau Manifolds Wadim Zudilin SIGMA 14 (2018), 086, 16 pages [ abs   pdf ] Renormalization of the Hutchinson Operator Yann Demichel SIGMA 14 (2018), 085, 27 pages [ abs   pdf ] Faithful Semitoric Systems Sonja Hohloch, Silvia Sabatini, Daniele Sepe and Margaret Symington SIGMA 14 (2018), 084, 66 pages [ abs   pdf ] Thinplate Splines on the Sphere Rick K. Beatson and Wolfgang zu Castell SIGMA 14 (2018), 083, 22 pages [ abs   pdf ] A Matrix Baker-Akhiezer Function Associated with the Maxwell-Bloch Equations and their Finite-Gap Solutions Vladimir P. Kotlyarov SIGMA 14 (2018), 082, 27 pages [ abs   pdf ] Local Type I Metrics with Holonomy in ${\rm G}_{2}^*$ Anna Fino and Ines Kath SIGMA 14 (2018), 081, 28 pages [ abs   pdf ] Differential Geometric Aspects of Causal Structures Omid Makhmali SIGMA 14 (2018), 080, 50 pages [ abs   pdf ] Metrized Quantum Vector Bundles over Quantum Tori Built from Riemannian Metrics and Rosenberg's Levi-Civita Connections Leonard Huang SIGMA 14 (2018), 079, 21 pages [ abs   pdf ] $t$-Unique Reductions for Mészáros's Subdivision Algebra Darij Grinberg SIGMA 14 (2018), 078, 34 pages [ abs   pdf ] Connection Formula for the Jackson Integral of Type $A_n$ and Elliptic Lagrange Interpolation Masahiko Ito and Masatoshi Noumi SIGMA 14 (2018), 077, 42 pages [ abs   pdf ] The Toda and Painlevé Systems Associated with Semiclassical Matrix-Valued Orthogonal Polynomials of Laguerre Type Mattia Cafasso and Manuel D. de la Iglesia SIGMA 14 (2018), 076, 17 pages [ abs   pdf ] On Some Applications of Sakai's Geometric Theory of Discrete Painlevé Equations Anton Dzhamay and Tomoyuki Takenawa SIGMA 14 (2018), 075, 20 pages [ abs   pdf ] On Regularization of Second Kind Integrals Julia Bernatska and Dmitry Leykin SIGMA 14 (2018), 074, 28 pages [ abs   pdf ] Asymptotic Expansions of Jacobi Polynomials for Large Values of $\beta$ and of Their Zeros Amparo Gil, Javier Segura and Nico M. Temme SIGMA 14 (2018), 073,   9 pages [ abs   pdf ] Generalized Burchnall-Type Identities for Orthogonal Polynomials and Expansions Mourad E.H. Ismail, Erik Koelink and Pablo Román SIGMA 14 (2018), 072, 24 pages [ abs   pdf ] The Chevalley-Weil Formula for Orbifold Curves Luca Candelori SIGMA 14 (2018), 071, 17 pages [ abs   pdf ] The Solution of Hilbert's Fifth Problem for Transitive Groupoids Paweł Raźny SIGMA 14 (2018), 070, 11 pages [ abs   pdf ] Loop Models and $K$-Theory Paul Zinn-Justin SIGMA 14 (2018), 069, 48 pages [ abs   pdf ] Numerical Approach to Painlevé Transcendents on Unbounded Domains Christian Klein and Nikola Stoilov SIGMA 14 (2018), 068, 10 pages [ abs   pdf ] Tetrahedron Equation and Quantum $R$ Matrices for $q$-Oscillator Representations Mixing Particles and Holes Atsuo Kuniba SIGMA 14 (2018), 067, 23 pages [ abs   pdf ] Quantum Klein Space and Superspace Rita Fioresi, Emanuele Latini and Alessio Marrani SIGMA 14 (2018), 066, 20 pages [ abs   pdf ] On the Coprimeness Property of Discrete Systems without the Irreducibility Condition Masataka Kanki and Takafumi Mase and Tetsuji Tokihiro SIGMA 14 (2018), 065, 17 pages [ abs   pdf ] The Functional Method for the Domain-Wall Partition Function Jules Lamers SIGMA 14 (2018), 064, 23 pages [ abs   pdf ] $d$-Orthogonal Analogs of Classical Orthogonal Polynomials Emil Horozov SIGMA 14 (2018), 063, 27 pages [ abs   pdf ] Lie Algebroid Invariants for Subgeometry Anthony D. Blaom SIGMA 14 (2018), 062, 36 pages [ abs   pdf ] On $q$-Deformations of the Heun Equation Kouichi Takemura SIGMA 14 (2018), 061, 16 pages [ abs   pdf ] $(2+)$-Replication and the Baby Monster Chris Cummins and Rodrigo Matias SIGMA 14 (2018), 060, 33 pages [ abs   pdf ] Dressing the Dressing Chain Charalampos A. Evripidou, Peter H. van der Kamp and Cheng Zhang SIGMA 14 (2018), 059, 14 pages [ abs   pdf ] Fuchsian Equations with Three Non-Apparent Singularities Alexandre Eremenko and Vitaly Tarasov SIGMA 14 (2018), 058, 12 pages [ abs   pdf ] Dihedral Group, 4-Torsion on an Elliptic Curve, and a Peculiar Eigenform Modulo 4 Ian Kiming and Nadim Rustom SIGMA 14 (2018), 057, 13 pages [ abs   pdf ] Asymptotics of Polynomials Orthogonal with respect to a Logarithmic Weight Thomas Oliver Conway and Percy Deift SIGMA 14 (2018), 056, 66 pages [ abs   pdf ] The Künneth Formula for the Twisted de Rham and Higgs Cohomologies Kai-Chieh Chen and Jeng-Daw Yu SIGMA 14 (2018), 055, 14 pages [ abs   pdf ] Modified Algebraic Bethe Ansatz: Twisted XXX Case Samuel Belliard, Nikita A. Slavnov and Benoit Vallet SIGMA 14 (2018), 054, 18 pages [ abs   pdf ] A Spin Analogue of Kerov Polynomials Sho Matsumoto SIGMA 14 (2018), 053, 13 pages [ abs   pdf ] The Determinant of an Elliptic Sylvesteresque Matrix Gaurav Bhatnagar and Christian Krattenthaler SIGMA 14 (2018), 052, 15 pages [ abs   pdf ] Quasi-Orthogonality of Some Hypergeometric and $q$-Hypergeometric Polynomials Daniel D. Tcheutia, Alta S. Jooste and Wolfram Koepf SIGMA 14 (2018), 051, 26 pages [ abs   pdf ] Evaluation of Certain Hypergeometric Functions over Finite Fields Fang-Ting Tu and Yifan Yang SIGMA 14 (2018), 050, 18 pages [ abs   pdf ] Jacobi-Trudi Identity in Super Chern-Simons Matrix Model Tomohiro Furukawa and Sanefumi Moriyama SIGMA 14 (2018), 049, 14 pages [ abs   pdf ] Recurrence Relations for Wronskian Hermite Polynomials Niels Bonneux and Marco Stevens SIGMA 14 (2018), 048, 29 pages [ abs   pdf ] On the Strong Ratio Limit Property for Discrete-Time Birth-Death Processes Erik A. van Doorn SIGMA 14 (2018), 047,   9 pages [ abs   pdf ] Lower Bounds for Numbers of Real Self-Dual Spaces in Problems of Schubert Calculus Kang Lu SIGMA 14 (2018), 046, 15 pages   [ abs   pdf ] A $\tau$-Tilting Approach to Dissections of Polygons Vincent Pilaud, Pierre-Guy Plamondon and Salvatore Stella SIGMA 14 (2018), 045,   8 pages   [ abs   pdf ] The $q$-Onsager Algebra and the Universal Askey-Wilson Algebra Paul Terwilliger SIGMA 14 (2018), 044, 18 pages   [ abs   pdf ] The Hyperbolic Asymptotics of Elliptic Hypergeometric Integrals Arising in Supersymmetric Gauge Theory Arash Arabi Ardehali SIGMA 14 (2018), 043, 30 pages   [ abs   pdf ] Higher Derivatives of Airy Functions and of their Products Eugeny G. Abramochkin and Evgeniya V. Razueva SIGMA 14 (2018), 042, 26 pages   [ abs   pdf ] A Variational Principle for Discrete Integrable Systems Sarah B. Lobb and Frank W. Nijhoff SIGMA 14 (2018), 041, 18 pages   [ abs   pdf ] $({\mathfrak{gl}}_M, {\mathfrak{gl}}_N)$-Dualities in Gaudin Models with Irregular Singularities Benoît Vicedo and Charles Young SIGMA 14 (2018), 040, 28 pages   [ abs   pdf ] Movable vs Monodromy Nilpotent Cones of Calabi-Yau Manifolds Shinobu Hosono and Hiromichi Takagi SIGMA 14 (2018), 039, 37 pages   [ abs   pdf ] Homomorphisms from Specht Modules to Signed Young Permutation Modules Kay Jin Lim and Kai Meng Tan SIGMA 14 (2018), 038, 21 pages   [ abs   pdf ] Singular Geometry and Higgs Bundles in String Theory Lara B. Anderson, Mboyo Esole, Laura Fredrickson and Laura P. Schaposnik SIGMA 14 (2018), 037, 27 pages   [ abs   pdf ] Surface Defects in E-String Compactifications and the van Diejen Model Belal Nazzal and Shlomo S. Razamat SIGMA 14 (2018), 036, 20 pages   [ abs   pdf ] On Basic Fourier-Bessel Expansions José Luis Cardoso SIGMA 14 (2018), 035, 13 pages   [ abs   pdf ] Results Concerning Almost Complex Structures on the Six-Sphere Scott O. Wilson SIGMA 14 (2018), 034, 21 pages   [ abs   pdf ] The Duals of the 2-Modular Irreducible Modules of the Alternating Groups John Murray SIGMA 14 (2018), 033,   5 pages   [ abs   pdf ] Elliptically Distributed Lozenge Tilings of a Hexagon Dan Betea SIGMA 14 (2018), 032, 39 pages   [ abs   pdf ] Cartan Prolongation of a Family of Curves Acquiring a Node Susan Jane Colley and Gary Kennedy SIGMA 14 (2018), 031, 16 pages   [ abs   pdf ] ${\rm SL}(2,\mathbb{C})$ Gustafson Integrals Sergey É. Derkachov, Alexander N. Manashov and Pavel A. Valinevich SIGMA 14 (2018), 030, 16 pages   [ abs   pdf ] On the Symplectic Structures in Frame Bundles and the Finite Dimension of Basic Symplectic Cohomologies Andrzej Czarnecki SIGMA 14 (2018), 029, 12 pages   [ abs   pdf ] One of the Odd Zeta Values from $\zeta(5)$ to $\zeta(25)$ Is Irrational. By Elementary Means Wadim Zudilin SIGMA 14 (2018), 028,   8 pages   [ abs   pdf ] Hopf Algebras which Factorize through the Taft Algebra $T_{m^{2}}(q)$ and the Group Hopf Algebra $K[C_{n}]$ Ana-Loredana Agore SIGMA 14 (2018), 027, 14 pages   [ abs   pdf ] Hopf Algebroid Twists for Deformation Quantization of Linear Poisson Structures Stjepan Meljanac and Zoran Škoda SIGMA 14 (2018), 026, 23 pages   [ abs   pdf ] Elliptic Well-Poised Bailey Transforms and Lemmas on Root Systems Gaurav Bhatnagar and Michael J. Schlosser SIGMA 14 (2018), 025, 44 pages   [ abs   pdf ] Fourier Series of Gegenbauer-Sobolev Polynomials Óscar Ciaurri and Judit Mínguez SIGMA 14 (2018), 024, 11 pages   [ abs   pdf ] On the Linearization Covering Technique and its Application to Integrable Nonlinear Differential Systems Anatolij K. Prykarpatski SIGMA 14 (2018), 023, 15 pages   [ abs   pdf ] Poisson Algebras and 3D Superintegrable Hamiltonian Systems Allan P. Fordy and Qing Huang SIGMA 14 (2018), 022, 37 pages   [ abs   pdf ] Nonlinear Stability of Relative Equilibria and Isomorphic Vector Fields Stefan Klajbor-Goderich SIGMA 14 (2018), 021, 37 pages   [ abs   pdf ] Special Solutions of Bi-Riccati Delay-Differential Equations Bjorn K. Berntson SIGMA 14 (2018), 020,   9 pages   [ abs   pdf ] Multivariate Quadratic Transformations and the Interpolation Kernel Eric M. Rains SIGMA 14 (2018), 019, 69 pages   [ abs   pdf ] Asymptotics for Hankel Determinants Associated to a Hermite Weight with a Varying Discontinuity Christophe Charlier and Alfredo Deaño SIGMA 14 (2018), 018, 43 pages   [ abs   pdf ] Evolutionary Hirota Type (2+1)-Dimensional Equations: Lax Pairs, Recursion Operators and Bi-Hamiltonian Structures Mikhail B. Sheftel and Devrim Yazıcı SIGMA 14 (2018), 017, 19 pages   [ abs   pdf ] Classifying Toric and Semitoric Fans by Lifting Equations from ${\rm SL}_2({\mathbb Z})$ Daniel M. Kane, Joseph Palmer and Álvaro Pelayo SIGMA 14 (2018), 016, 43 pages   [ abs   pdf ] Billiards and Tilting Characters for ${\rm SL}_3$ George Lusztig and Geordie Williamson SIGMA 14 (2018), 015, 22 pages   [ abs   pdf ] Categorical Tori Nora Ganter SIGMA 14 (2018), 014, 18 pages   [ abs   pdf ] Elliptic Hypergeometric Sum/Integral Transformations and Supersymmetric Lens Index Andrew P. Kels and Masahito Yamazaki SIGMA 14 (2018), 013, 29 pages   [ abs   pdf ] $k$-Dirac Complexes Tomáš Salač SIGMA 14 (2018), 012, 33 pages   [ abs   pdf ] Series Solutions of the Non-Stationary Heun Equation Farrokh Atai and Edwin Langmann SIGMA 14 (2018), 011, 32 pages   [ abs   pdf ] Some Remarks on the Total CR $Q$ and $Q^\prime$-Curvatures Taiji Marugame SIGMA 14 (2018), 010,   8 pages   [ abs   pdf ] Dual Polar Graphs, a nil-DAHA of Rank One, and Non-Symmetric Dual $q$-Krawtchouk Polynomials Jae-Ho Lee and Hajime Tanaka SIGMA 14 (2018), 009, 27 pages   [ abs   pdf ] Darboux Integrability of Trapezoidal $H^{4}$ and $H^{6}$ Families of Lattice Equations II: General Solutions Giorgio Gubbiotti, Christian Scimiterna and Ravil I. Yamilov SIGMA 14 (2018), 008, 51 pages   [ abs   pdf ] Alvis-Curtis Duality for Finite General Linear Groups and a Generalized Mullineux Involution Olivier Dudas and Nicolas Jacon SIGMA 14 (2018), 007, 18 pages   [ abs   pdf ] On the TASEP with Second Class Particles Eunghyun Lee SIGMA 14 (2018), 006, 17 pages   [ abs   pdf ] Poisson Geometry Related to Atiyah Sequences Kirill Mackenzie, Anatol Odzijewicz and Aneta Sliżewska SIGMA 14 (2018), 005, 29 pages   [ abs   pdf ] Reconstructing a Lattice Equation: a Non-Autonomous Approach to the Hietarinta Equation Giorgio Gubbiotti and Christian Scimiterna SIGMA 14 (2018), 004, 21 pages   [ abs   pdf ] Manifold Ways to Darboux-Halphen System John Alexander Cruz Morales, Hossein Movasati, Younes Nikdelan, Raju Roychowdhury and Marcus A.C Torres SIGMA 14 (2018), 003, 14 pages   [ abs   pdf ] Poles of Painlevé IV Rationals and their Distribution Davide Masoero and Pieter Roffelsen SIGMA 14 (2018), 002, 49 pages   [ abs   pdf ] Asymptotic Formulas for Macdonald Polynomials and the Boundary of the $(q, t)$-Gelfand-Tsetlin Graph Cesar Cuenca SIGMA 14 (2018), 001, 66 pages   [ abs   pdf ]