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19952026
most cited3-dimensional Cauchy-Riemann structures and 2nd order ordinary differential equations

81 citations · 175 across the 30 of their papers we have counts for

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math-ph2024

Sachs equations and plane waves III: Microcosms

Jonathan Holland, George Sparling

This article examines the structure of plane wave spacetimes (of signature , ) that are homogeneous (the isometry group is transitive) and geodesically complete --…

math-ph2024

Sachs equations and plane waves II: Isometries and conformal isometries

Jonathan Holland, George Sparling

This article describes the symmetries of plane wave spacetimes in dimension four and greater. It begins with a description of the isometric automorphisms, and in particular the hom…