Computational geometry conference

Absolute geometry is a geometry based on an axiom system for Euclidean geometry without the parallel postulate or any of its alternatives.
Traditionally, this has meant using only the first four of Euclid's postulates.
The term was introduced by János Bolyai in 1832.
It is sometimes referred to as neutral geometry, as it is neutral with respect to the parallel postulate.
The first four of Euclid's postulates are now considered insufficient as a basis of Euclidean geometry, so other systems are used instead.

The International Symposium on Computational Geometry (SoCG) is an academic conference in computational geometry.
It was founded in 1985, with program committee consisting of David Dobkin, Joseph O'Rourke, Franco Preparata, and Godfried Toussaint; O'Rourke was the conference chair.
The symposium was originally sponsored by the SIGACT and SIGGRAPH Special Interest Groups of the Association for Computing Machinery (ACM).
It dissociated from the ACM in 2014, motivated by the difficulties of organizing ACM conferences outside the United States and by the possibility of turning to an open-access system of publication.
Since 2015 the conference proceedings have been published by the Leibniz International Proceedings in Informatics instead of by the ACM.
Since 2019 the conference has been organized under the auspices of the newly-formed Society for Computational Geometry.