Proving regular expression identity
35630
Proof for formal languages
8669
Regular Expression for password validation
114438
Explanation of Lookaheads in This Regular Expression
61451
Interesting test of Javascript RegExp
140140
An identity which applies to all of the natural numbers
51317
Regular expression to match digits and basic math operators
134
Prove that the expression is a perfect square
19424
Showing $(M^\perp)^\perp=\overline{M}$
100788
Proving Newton's identities
136700
Proving divisibility of expression using induction
101140
How can I find all matches to a regular expression in Python?
105887
Ring and Subring with different Identities
120682
How do I verify that a string only contains letters, numbers, underscores and dashes?
113305
Proof using Prüfer encoding
109470
Proof of whether a specific element is in a commutative, invertible monoid.
118954
Minimum Length Regular Expression
90970
How to prove the line exist?