activity
20062025
most citedThe exponential Lie series for continuous semimartingales

50 citations · 202 across the 30 of their papers we have counts for

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9 papers · 1 filter

math.AP2025

Linear systems, determinants and solutions of the Kadomtsev-Petviashvili equation

Gordon Blower, Simon J. Malham

Let be a linear system in continuous time with input and output space and state space . The scattering (or impulse response) functions $ϕ_{(x)}(t)…

math.AP2023

Coagulation, non-associative algebras and binary trees

Simon J. A. Malham

We consider the classical Smoluchowski coagulation equation with a general frequency kernel. We show that there exists a natural deterministic solution expansion in the non-associa…

math.AP2022★ 6 cited

Applications of Grassmannian flows to coagulation systems

Anastasia Doikou, Simon J. A. Malham, Ioannis Stylianidis +1

We demonstrate how many classes of Smoluchowski-type coagulation models can be realised as multiplicative Grassmannian flows and are therefore linearisable, and thus integrable in…

math.AP2020

Integrability of local and nonlocal non-commutative fourth order quintic nonlinear Schrodinger equations

Simon J. A. Malham

We prove integrability of a generalised non-commutative fourth order quintic nonlinear Schrodinger equation. The proof is relatively succinct and rooted in the linearisation method…

math.AP2020★ 15 cited

Grassmannian flows and applications to non-commutative non-local and local integrable systems

Anastasia Doikou, Simon J. A. Malham, Ioannis Stylianidis

We present a method for linearising classes of matrix-valued nonlinear partial differential equations with local and nonlocal nonlinearities. Indeed we generalise a linearisation p…

math.AP2019

Applications of Grassmannian flows to integrable systems

Anastasia Doikou, Simon J. A. Malham, Ioannis Stylianidis +1

We show how many classes of partial differential systems with local and nonlocal nonlinearities are linearisable in the sense that they are realisable as Fredholm Grassmannian flow…

math.AP2017★ 12 cited

Partial differential systems with nonlocal nonlinearities: Generation and solutions

Margaret Beck, Anastasia Doikou, Simon J. A. Malham +1

We develop a method for generating solutions to large classes of evolutionary partial differential systems with nonlocal nonlinearities. For arbitrary initial data, the solutions a…

math.AP2017

Grassmannian flows and applications to nonlinear partial differential equations

Margaret Beck, Anastasia Doikou, Simon J. A. Malham +1

We show how solutions to a large class of partial differential equations with nonlocal Riccati-type nonlinearities can be generated from the corresponding linearized equations, fro…

math.AP2011

Evans function and Fredholm determinants

Issa Karambal, Simon J. A Malham

We explore the relationship between the Evans function, transmission coefficient and Fredholm determinant for systems of first order linear differential operators on the real line.…