Existential Theory: Understanding Last Proposition

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The discussion centers on the last proposition of positive existential theory, specifically its implications and foundational principles. Participants seek clarification on why this proposition holds true, referencing a survey that outlines its relevance. Key terms such as "existential theory" and "last proposition" are emphasized, indicating a focus on logical frameworks and their interpretations within mathematical logic.

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  • Understanding of positive existential theory
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Mathematicians, logicians, philosophy students, and anyone interested in the foundations of existential theory and its applications in logical reasoning.

mathmari
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Hey! :o

I am reading the following lemma about (positive) existential theory:

View attachment 4535

Could you explain to me the last proposition?

Why does this hold?
 

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