de Sitter Space
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Coordinate Patches
Global
Poincaré (Expanding)
Static
Contracting
Boundary / Holography
Yellow curves — null geodesics
White ring — throat ($\tau = 0$)
Dots — comoving observers
Tessellated disks — $\mathscr{I}^\pm$
Coordinates
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Wireframe
Observers
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Boundaries
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Designed by EEE