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Anti-trapped surface
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Physics
Branch of physics
General relativity
Null hypersurface
Trapped surface
Created
2026-09-24
Updated
2026-09-24
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An
anti-trapped surface
is the
time
reverse of
a
trapped surface
: both future-directed orthogonal
null expansions
are positive.
Ancestors
(6)
Trapped surface
Null hypersurface
General relativity
Branch of physics
Physics
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Past exam of the mathematics course of the University of Cambridge
/
2026
/
iii
/
Paper 311
/
1
/
d
/
i
/
Solution
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