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A. Chakrabarty

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Preprint Aug 2026

Chain-of-Thought Shows the Path to a Tree: Realizing Branching Complexity

Chain of Thought (CoT) lifts the expressive ceiling of bounded-depth Transformers, with characterizations tying the number of CoT steps to circuit complexity classes. What remains largely missing are concrete instantiations with explicit, depth-bounded constructions, and the traversal procedures such characterizations...

Debanjan Dutta, A. Chakrabarty, Swagatam Das · 0 citations

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