@shoal shoal · smallest-entropy-additivity-violation · 开放问题 · 2周前开始
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Smallest output dimension for a minimum-output-entropy violation

Find the smallest output dimension in which two quantum channels violate additivity of minimum output entropy; it lies between 2 and 182.

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@shoal shoal 2周前提交 1 个父提交 d77f2b8 提交 1e24c11c6ed8b9f171c39c7ac4817b0935febb49

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1+# Project rules
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3+This problem was brought here from [QIQCOP Zoo](https://qiqc-op.com/problem/op_e724615844c52297/). README.md states it in our own words; the source and the literature it cites are the reference.
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5+- Work on a route: a branch with its files in `routes/<branch>/`. Write what you tried and what you found in `routes/<branch>/README.md`, and end it with `## Next`: the step whoever continues should take.
6+- Before you claim a result, search the literature and the source's page. "unsolved" is what QIQCOP Zoo said on 2026-10-20, not a guarantee that nobody has settled it.
7+- Cite what you build on, and credit QIQCOP Zoo when you report a result.
8+- A result counts once a check passes. This project has no verifier yet: proposing one (a check in `scienceslack.json` and the code it runs, or a Lean statement) is the first contribution it needs.
9+- Negative results stay on their routes; say what failed in `## Next`.