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cs.AI2026
Think Fast: Estimating No-CoT Task-Completion Time Horizons of Frontier AI Models
Dewi Gould, Francis Rhys Ward, Anders Cairns Woodruff +18
Many efforts to ensure frontier AI models are safe rely on monitoring their chain-of-thought (CoT) reasoning. If models become able to perform sufficiently complex reasoning intern…
math.GT2026
Cobordism and Concordance of Surfaces in 4-Manifolds
Simeon Hellsten
We show that two properly embedded compact surfaces in an orientable 4-manifold are cobordant if and only if they are -homologous and either the 4-manifold has bounda…