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funny problem from model theory problem sheet题面Let $L$ be a countable language, $T$ a theory. Let $c_1,c_2,...$ be new constants, $L'=L\cup\lbrace c_1,...\rbrace$, and let $X$ be the set of all… https://blog.hellholestudios.top/archives/1592
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funny problem from model theory problem sheet题面Let $L$ be a countable language, $T$ a theory. Let $c_1,c_2,...$ be new constants, $L'=L\cup\lbrace c_1,...\rbrace$, and let $X$ be the set of all… https://blog.hellholestudios.top/archives/1592
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