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| | | | | |
| <math>\begin{matrix} | | <math>\begin{matrix} |
− | (~) & = & 0 & = & \operatorname{false} | + | \texttt{(~)} |
| + | & = & 0 |
| + | & = & \operatorname{false} |
| \\[6pt] | | \\[6pt] |
− | (x) & = & \tilde{x} & = & x' | + | \texttt{(} x \texttt{)} |
| + | & = & |
| + | \tilde{x} |
| + | & = & x^\prime |
| \\[6pt] | | \\[6pt] |
− | (x, y) & = & \tilde{x}y \lor x\tilde{y} & = & x'y \lor xy' | + | \texttt{(} x, y \texttt{)} |
| + | & = & |
| + | \tilde{x}y \lor x\tilde{y} |
| + | & = & |
| + | x^\prime y \lor x y^\prime |
| \\[6pt] | | \\[6pt] |
− | (x, y, z) & = & \tilde{x}yz \lor x\tilde{y}z \lor xy\tilde{z} & = & x'yz \lor xy'z \lor xyz' | + | \texttt{(} x, y, z \texttt{)} |
| + | & = & |
| + | \tilde{x}yz \lor x\tilde{y}z \lor xy\tilde{z} |
| + | & = & |
| + | x^\prime y z \lor x y^\prime z \lor x y z^\prime |
| \end{matrix}</math> | | \end{matrix}</math> |
| |} | | |} |
| | | |
− | It may also be noted that <math>(x, y)\!</math> is the same function as <math>x + y\!</math> and <math>x \ne y</math>, and that the inclusive disjunctions indicated for <math>(x, y)\!</math> and for <math>(x, y, z)\!</math> may be replaced with exclusive disjunctions without affecting the meaning, because the terms disjoined are already disjoint. However, the function <math>(x, y, z)\!</math> is not the same thing as the function <math>x + y + z\!</math>. | + | It may also be noted that <math>\texttt{(} x, y \texttt{)}</math> is the same function as <math>x + y\!</math> and <math>x \ne y</math>, and that the inclusive disjunctions indicated for <math>\texttt{(} x, y \texttt{)}</math> and for <math>\texttt{(} x, y, z \texttt{)}</math> may be replaced with exclusive disjunctions without affecting the meaning, because the terms disjoined are already disjoint. However, the function <math>\texttt{(} x, y, z \texttt{)}</math> is not the same thing as the function <math>x + y + z\!</math>. |
| | | |
| The minimal negation operator ('''mno''') has a legion of aliases: ''logical boundary operator'', ''[[limen|limen operator]]'', ''threshold operator'', or ''least action operator'', to name but a few. The rationale for these names is visible in the [[venn diagram]]s of the corresponding operations on [[set]]s. | | The minimal negation operator ('''mno''') has a legion of aliases: ''logical boundary operator'', ''[[limen|limen operator]]'', ''threshold operator'', or ''least action operator'', to name but a few. The rationale for these names is visible in the [[venn diagram]]s of the corresponding operations on [[set]]s. |