Abstract
In every textbook on the theory of relativity it is assumed, without any discussion, that space-time is a differentiable manifold, possibly with singularities. Between a point-set and a differentiable manifold there is an enormous gap, and we felt that physics itself could contribute to narrowing this gap. In experimental physics, one can make only a finite number of well-separated measurements, and therefore it is natural to start with a discrete set of points as a candidate for space-time. As one cannot put an upper bound on the number of measurements, this set cannot be finite; it must, at least, be countable. Next, as one cannot place a quantitative limit on experimental accuracy, one has to admit the “density” property that between any two points on a scale lies a third. Finally, one has to ask how one arrives at the continuum. In short, we felt that it should be possible to start from point-sets and find conditions (axioms) — motivated by physics — which would allow us to construct a topological manifold from the point-set. If this turned out to be true, one could become more ambitious and look for conditions which would imply the differentiability of the manifold.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 2006 Springer-Verlag Berlin Heidelberg
About this chapter
Cite this chapter
Borchers, HJ., Sen, R.N. (2006). Introduction. In: Mathematical Implications of Einstein-Weyl Causality. Lecture Notes in Physics, vol 709. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-37681-X_1
Download citation
DOI: https://doi.org/10.1007/3-540-37681-X_1
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-37680-4
Online ISBN: 978-3-540-37681-1
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)