# Empty Set

An empty set is defined as

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<img src="https://latex.codecogs.com/svg.image?%5Cmathcal%7BO%7D:=%5Cemptyset."/>
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\mathcal{O} := \emptyset .
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In CORA, empty sets are instantiated by

    O = emptySet(n);

where ``n`` is the dimension.
This dimension is solely used for internal purposes, such as dimensionality checks.

Example:

    % initialize empty set
    O = emptySet(2);
    % plot empty set
    plot(O);

Empty sets are used in hybrid systems to model instant transitions.
More information in the <a target='_blank' href="https://cora.in.tum.de/manual">CORA manual</a> or type

    help emptySet

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