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Suppose we have a matching logic proof, which existentially generalises over x. If we know that x is a fresh variable, prove that we can construct an equivalent proof with existentially generalises over y, which is also a fresh variable.
Suppose we have a matching logic proof, which existentially generalises over
x. If we know thatxis a fresh variable, prove that we can construct an equivalent proof with existentially generalises overy, which is also a fresh variable.