Proposition (Statement.).
Def. A proposition is a sentence that has exactly one
K
true value.
It is either true, denoted by T, or false, denoted by F
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ex "7² = 49" true value = T. "2|7" True value = F.
"x²= 36" not a proposition. (proposition form).
"She lives in Hsinchin not a
proposition.
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