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Kock A. and G.E. Reyes (2001). Some differential equations in SDG. arXiv:math.CT/0104164 17 April 2001
This paper has been superseded. Its contents have been improved and re-written by the authors as three separate papers: “Some calculus with extensive quantities: wave equation”, “Categorical distribution theory; heat equation” and “Ordinary differential equations and their exponentials”. These papers may be unloaded here. I enclose it because it gives a bird’s view on our project.
Royer, A and G.E. Reyes. Relativistic velocity addition as a linear fractional map, and Thomas rotation. 11 pages. Version préliminaire (Avril 2001)
Gonzalo E. Reyes - Marie La Palme Reyes 