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{{Built-in|Nand|⍲}} is a [[dyadic]] [[scalar function|scalar]] [[boolean function]] which tests if either argument is not true: it returns 0 if both are 1 and 1 if at least one is 0. It represents the [[wikipedia:Sheffer stroke|Sheffer stroke]] or alternative denial in Boolean logic. Nand is the [[not|boolean negation]] <source lang=apl inline>~</source> of the [[And]] function <source lang=apl inline>∧</source>. | {{Built-in|Nand|⍲}} is a [[dyadic]] [[scalar function|scalar]] [[boolean function]] which tests if either argument is not true: it returns 0 if both are 1 and 1 if at least one is 0. It represents the [[wikipedia:Sheffer stroke|Sheffer stroke]] or alternative denial in Boolean logic. Nand is the [[not|boolean negation]] <source lang=apl inline>~</source> of the [[And]] function <source lang=apl inline>∧</source>, and so its [[glyph]] is composed from those. However, [[fonts]] vary in how they compose them; some overlaying the glyphs (∧̴), and some stacking them (∧̃). | ||
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