Subset/Examples/Abstract Example 3

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Example of Subset

Let $A$ denote the set:

$A := \set {1, 2, 3}$

Let $B$ denote the set:

$B := \set {\&, 3, +, 1, 2}$

Then:

$A \subseteq B$
$A \subseteq A$
$B \subseteq B$


Sources