Talk:Descriptive set theory

Section Projective Sets

At the end of the section on Projective Sets, one suddenly starts talking about objects such as $L$ and ${\mathcal {P}}(\omega )$. However, these have not been defined. The last two paragraphs of the section are of a completely different level than the more introductory paragraphs that precede them. Nmdwolf (talk) 16:54, 12 December 2023 (UTC)