checkerboarded hyperbolic tilings with a point with even rotational symmetry at the center partition the Euclidean immersion into two extents of equal measure, therefore half the volume of the ball. (π/2 in many cases you've seen)
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checkerboarded hyperbolic tilings with a point with even rotational symmetry at the center partition the Euclidean immersion into two extents of equal measure, therefore half the volume of the ball. (π/2 in many cases you've seen)