This paper studies unbounded pseudo-algebraically closed (PAC) fields and shows an amalgamation result for types over algebraically closed sets. It discusses various applications, for instance that omega-free PAC fields have the property NSOP3. It also contains a description of imaginaries in PAC fields.

中文翻译：

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伪代数闭域中的类型合并及应用

本文研究了无界伪代数闭 (PAC) 场，并展示了代数闭集上类型的合并结果。它讨论了各种应用，例如无 omega 的 PAC 字段具有 NSOP 属性3. 它还包含对 PAC 字段中的想象的描述。