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  "body": "\n## Summary\n\nIn model theory, a mathematical discipline, a **β-model** (from the French \"bon ordre\", well-ordering) is a model that is correct about statements of the form \"*X* is well-ordered\". The term was introduced by Mostowski (1959) as a strengthening of the notion of ω-model. In contrast to the notation for set-theoretic properties named by [[ordinals|0RDJK7EQYY]], such as $\\xi$-indescribability, the letter β here is only denotational.\n",
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