# Differences

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notation_and_terminology [2010/06/15 17:59]
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notation_and_terminology [2010/07/29 16:10] (current)
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\emph{Elements of sets} are denoted by lower-case roman letters, usually $a, b, c, d, e$.\\ \emph{Elements of sets} are denoted by lower-case roman letters, usually $a, b, c, d, e$.\\
-\emph{Variables that range over elements} are denoted by lower-case roman letters, usually $x, y, z, u, v, w, x_0, x_1, \ldots$.+\emph{Variables that range over elements} are denoted by lower-case roman letters, usually $x, y, z, u, v, w, x_0, x_1, \ldots$.\\
\emph{Integer variables} are usually denoted by $i,j,k,m,n$.\\ \emph{Integer variables} are usually denoted by $i,j,k,m,n$.\\
\emph{Variables that range over sets} are denoted by upper-case roman letters, usually $X, Y, Z, X_0, X_1, \ldots$ \emph{Variables that range over sets} are denoted by upper-case roman letters, usually $X, Y, Z, X_0, X_1, \ldots$