Noncommutative Relativistic Spacetimes and Worldlines from 2 + 1 Quantum (Anti-)de Sitter Groups

Table 1

The AdS, Minkowskian, and dS (2 + 1)D spacetimes and 4D spaces of time-like lines according to the curvature/cosmological constant = −.

	Spacetime with curvature	Space of worldlines with curvature
,
,