generated from smyalygames/quartz
5 lines
201 B
Markdown
5 lines
201 B
Markdown
$\varkappa_{y} \in \Pi_{X} \, \{ 0, \, 1 \}$, so $\varkappa_{y} : X \to \{ 0, \, 1 \}$ defined as:
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$$\varkappa_{y}(x) = \begin{cases}
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1, & \text{if}\ x \in Y\\ 0, & \text{if}\ x \notin Y
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\end{cases}$$
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