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News/The Approximation Rank of Softmax Attention: Sharp Geometric Laws and Robust Interaction Dimension
arxiv
PublishedAugust 31, 2026 at 4:00 AM

The Approximation Rank of Softmax Attention: Sharp Geometric Laws and Robust Interaction Dimension

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arXiv:2608.28150v1 Announce Type: new Abstract: Which geometry controls the rank complexity of normalized softmax attention? We study maximum-row-$\ell_1$ approximation rank, exactly the least unrestricted rank preserving every bounded vector-valued output. Two sharp worst-case laws isolate support

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