In logic, substitution refers to the process of replacing a variable or a term in a logical formula with another term or expression. This is often done to simplify expressions, to prove theorems, or to demonstrate certain properties of logical systems. Here's a more detailed explanation: 1. **Variables and Terms**: In logical expressions, we often use variables (like \(x\) or \(y\)) and constants (like \(a\) or \(b\)).
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