For two functions $f,g$ from $X$ to $\mathbb R$ how should I interpret $f \wedge g$?

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For two functions $f,g$ from $X$ to $\mathbb R$ how should I interpret $f \wedge g$? I came to such a term while reading the axioms of fuzzy topology.

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Wedge product of two $0$-forms (AKA smooth functions $X \to \mathbb{R}$) is ordinary multiplication. This could be what they mean.