## The Kruskal-Szekeres "Extension": Counter-Examples

**Authors:** Stephen J. Crothers

The Kruskal-Szekeres "coordinates" are said to "extend" the so-called "Schwarzschild
solution", to remove an alleged "coordinate singularity" at the event horizon of a black
hole at r = 2m, leaving an infinitely dense point-mass singularity at "the origin" r = 0.
However, the assumption that the point at the centre of spherical symmetry of the
"Schwarzschild solution" is at "the origin" r = 0 is erroneous, and so the
Kruskal-Szekeres "extension" is invalid; demonstrated herein by simple counter-examples.

**Comments:** 5 pages.

**Download:** **PDF**

### Submission history

[v1] 3 Jan 2011

**Unique-IP document downloads:** 76 times

**Add your own feedback and questions here:**

*You are equally welcome to be positive or negative about any paper but please be polite. If you are being critical you must mention at least one specific error, otherwise your comment will be deleted as unhelpful.*

*
*