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arXiv research

A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

168,695 papers · 148 categories

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1 result for “observer-refocusing”

Topological consequences of null-geodesic refocusing and applications to

Z^x

manifoldsmath.DG

New findings on compactness and fundamental groups of certain spacetime manifolds.

problem Understanding the compactness and fundamental groups of

Z^x

manifolds.

method Defined observer-refocusing spacetimes and used contact geometry to prove compactness and finite fundamental groups.

result Analytic

Z^x

manifolds are

Y^x_l

manifolds for some

l>0

.

observer-refocusing compactness fundamental group Riemannian geometry Lorentzian geometry

2025-03-30abs ↗pdf ↗