Consider the statement ‘Every Yang–Baxter integrable system is defined to be exactly-solvable’. To formalise this statement, definitions and axioms are introduced. Then, using a specific Yang–Baxter integrable bosonic system, it is shown that a paradox emerges. A generalisation for completely integrable bosonic systems is also developed.

中文翻译：

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杨-巴克斯特悖论

考虑“每个 Yang-Baxter 可积系统都被定义为完全可解的”这一陈述。为了形式化这个陈述，引入了定义和公理。然后，使用特定的 Yang-Baxter 可积玻色子系统，表明出现了一个悖论。还开发了完全可积玻色系统的推广。