可独立公理化的L_{omega_1,omega}理论
Independently Axiomatizable L_{omega_1,omega} Theories
摘要:
本文部分回答了Arnie Miller(http://www.math.wisc.edu/miller/res/problem.pdf)和X. Caicedo,我们得到了L_{omega_1,omega}理论有独立公理化的充分条件。作为结果,我们得到两个推论:第一,假设Vaught猜想,每一个L_{omega_1,omega}理论在可数语言有一个独立的公理化。第二,这一次完全在ZFC中,波莱尔集族的每个交集都可以形成为独立波莱尔集族的交集。
英文摘要:
In partial answer to a question posed by Arnie Miller (http://www.math.wisc.edu/~miller/res/problem.pdf) and X. Caicedo, we obtain sufficient conditions for an L_{omega_1,omega} theory to have an independent axiomatization. As a consequence we obtain two corollaries: The first, assuming Vaught's Conjecture, every L_{omega_1,omega} theory in a countable language has an independent axiomatization. The second, this time outright in ZFC, every intersection of a family of Borel sets can be formed as the intersection of a family of independent Borel sets.
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