2025 MATRIX Annals Part I

The 2025 MATRIX Annals Part I, the ninth book in the MATRIX Book Series, documents scientific activities at MATRIX in the first half of 2025. Pre-publication versions of the articles in the book are posted below.

We expect that the 2025 MATRIX Annals Part I will be indexed by zbmath and mathscinet.

Preface

MATRIX Research Programs

Probabilistic Models in Evolutionary Biology and Game Theory (Guest editor: Andrea Collevecchio)
Gradient Flows in Geometry and PDE (Guest editor: Glen Wheeler)
Geometric Analysis and Symmetries (Guest editor: Tim Buttsworth)
Splitting Algorithms—Advances, Challenges, and Opportunities (Guest editor: Minh Dao)
Teichmüller Theory and Flat Structures
Probability and Dynamical Systems
Numerical Analysis of Interfaces and Multiphysics Problems (Guest editor: Victor Calo)
Triangulations in Low-Dimensional Topology (Guest editor: Jonathan Spreer)
Combinatorics of McKay and Wormald (Guest editors: Ian Wanless and Anita Liebenau)

MATRIX-MFO Tandem Workshop

Nonlinear Geometric Diffusion Equations

MATRIX-AMSI PhD Student Symposium

Mathematical Structures in Statistical Mechanics

Refereed Articles

MATRIX Program: Probabilistic Models in Evolutionary Biology and Game Theory

Jack Mills, Tuan-Minh Nguyen
The secretary problem with strategic secretaries

Conrad Burden, Robert Griffiths
Coalescence in the Feller Branching Diffusion

Georgy Sofronov, Joanna Rymaszewska, Krzysztof J. Szajowski
Holistic Decision-Making in Stopping Problems: Emphasizing Psychological Aspects

Jie Yen Fan, Kais Hamza, Fima C. Klebaner, Ziwen Zhong
Estimation of rates in population-age-dependent processes by means of test functions

Kamil Dedecius and Vladimira Seckarova
Sequential modeling of multivariate count

MATRIX Program: Gradient Flows in Geometry and PDE

Piotr Rybka
Two Examples of Gradient Flows with a Small Parameter

Yoshikazu Giga, Sho Katayama
Remarks on graph-like forward self-similar solutions to the surface diffusion flow equations

Nobuhito Miyake
Asymptotic expansion of heat contents for higher order parabolic equations

Kensuke Yoshizawa
Obstacle problems for the elastic flow and related topics

Tatsuya Miura
Smooth compactness of elasticae

Ben Andrews, Glen Wheeler
On the planar free elastic flow with small oscillation of curvature

MATRIX Program: Geometric Analysis and Symmetries

Yann Bernard
On a class of conformally-invariant energies on four-dimensional submanifolds

Kyle Broder, Gang Tian
Mortal solutions to the Kähler–Ricci flow

Peter Petersen, James Stanfield
Poincare polynomials and curvature operators and symmetric spaces

MATRIX Program: Splitting Algorithms – Advances, Challenges, and
Opportunities

Jordan Collard, Scott B. Lindstrom
Quadratic convergence of a projection method for a plane curve feasibility problem

Jan Harold Alcantara, Felipe Atenas
A relaxed version of Ryu’s three-operator splitting method for structured nonconvex optimization

MATRIX Program: Numerical Analysis of Interface and Multiphysics
Problems

Rekha Khot, Bishnu P. Lamichhane, Ricardo Ruiz-Baier
An ultra-weak three-field finite element formulation for the biharmonic and extended Fisher–Kolmogorov equations

MATRIX Program: Triangulations in Low-Dimensional Topology

Eric Chesebro, Justin Lanier, Emma N. McQuire, James Morgan, Jessica S. Purcell, Henry Segerman
Volumes of ideal hyperbolic drums

Jonathan A. Hillman
The F2-cohomology rings of 3-manifold

MATRIX Program: Combinatorics of McKay and Wormald

Jack Allsop, Kevin Hendrey, Gordon Royle, Angus Southwell, Jane Tan, Ian M. Wanless, David R. Wood
Latin Tableaux

Mahdieh Hasheminezhad, Mikhail Isaev, Brendan D. McKay and Rui-Ray Zhang
On Pauling’s residual entropy estimate for regular graphs with growing degree

Other Contributed Articles

MATRIX Program: Gradient Flows in Geometry and PDE

Mashniah A. Gazwani and James A. McCoy
Length-constrained, length-penalised and free elastic flows of planar
curves inside cones

MATRIX Program: Triangulations in Low-Dimensional Topology

Stefan Friedl and Kenan Ince
When does the Table Theorem imply a solution to the Square Peg Problem?

MATRIX Program: Combinatorics of McKay and Wormald

Pu Gao, Catherine Greenhill, Carlos Hoppen, Hongyi Lyu, Xavier Pérez–Giménez, Cristiane Sato, Nick Wormald, Rui-Ray Zhang
Finding Nemo at MATRIX

Brett Kolesnik
On plane trees and their connections with graphical sequences and random walks

Brett Kolesnik, Tamás Makai, Rajko Nenadov, Xavier Pérez-Giménez, Paweł Prałat and Maksim Zhukovskii
Towards universality in graph bootstrap percolation