Product posets and causal automorphisms of the plane
Alfonso Garc\'ia-Parrado G\'omez-Lobo, Ettore Minguzzi

TL;DR
This paper provides a straightforward characterization of the causal automorphisms in 1+1 Minkowski spacetime, enhancing understanding of spacetime symmetries in special relativity.
Contribution
It offers a new, simple characterization of causal automorphisms specifically for 1+1 Minkowski spacetime.
Findings
Causal automorphisms are characterized explicitly.
The characterization simplifies previous complex descriptions.
Results have implications for spacetime symmetry analysis.
Abstract
A simple characterization of the causal automorphisms of 1+1 Minkowski spacetime is given.
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