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Explore Stack InternalAccording to Wikipedia:
Given a finite alphabet $\Sigma$, the following constants are defined as regular expressions:
- (empty set) $\emptyset$ denoting the set $\emptyset$.
(empty set) $\emptyset$ denoting the set $\emptyset$.
- ...
...
... a string that contains only an empty-set symbol is a regular expression, which represents the empty language.
According to Wikipedia:
Given a finite alphabet $\Sigma$, the following constants are defined as regular expressions:
- (empty set) $\emptyset$ denoting the set $\emptyset$.
- ...
... a string that contains only an empty-set symbol is a regular expression, which represents the empty language.
According to Wikipedia:
Given a finite alphabet $\Sigma$, the following constants are defined as regular expressions:
(empty set) $\emptyset$ denoting the set $\emptyset$.
...
... a string that contains only an empty-set symbol is a regular expression, which represents the empty language.
According to Wikipedia:
Given a finite alphabet $\Sigma$, the following constants are defined as regular expressions:
- (empty set) $\emptyset$ denoting the set $\emptyset$.
- ...
... a string that contains only an empty-set symbol is a regular expression, which represents the empty language.
