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Schwarzschild, K. (1915) Letter to A. Einstein. Collected Papers of Albert Einstein, The Berlin Years, Correspondence 1914-1918, Document n°169.
https://einsteinpapers.press.princeton.edu/vol6-doc

has been cited by the following article:

• TITLE: The True Schwarzschild Solution and Its Subsequent Geometry

  AUTHORS: Jean-Pierre Petit, Gilles d’Agostini, Jean-Marc Pechinot

  KEYWORDS: Schwarzschild Metric, Schwarzschild Geometry, Throat Sphere

  JOURNAL NAME: Journal of Modern Physics, Vol.17 No.8, August 28, 2026

  ABSTRACT: We present the solution to Einstein’s stationary, spherically symmetric field equation, expressed using variables initially chosen by Schwarzschild. We show that the geodesics of the Flamm surface are not the geodesics of the hypersurface solution and how the Flamm’s 2D cross-section allows us to understand the topology of the 4D object.