Talk:Union of two regular languages

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[edit] From the author

This Article only provides a mathematical proof to a statement made in the Article Nondeterministic finite state machine. Readers who are not familiar with the subject material in this Article should go to read the Article of Nondeterministic finite state machine.--CBKAtTopsails 14:20, 11 June 2007 (UTC)

[edit] Declined PROD

I have declined the WP:PROD deletion nomination on this article as the nomination stated without reservation that proofs don't belong in Wikipedia. This is an opinion that is not without controversy or detractors. The entire issue of how to represent proofs in Wikipedia remains a matter of open discussion. --User:Ceyockey (talk to me) 19:23, 27 December 2007 (UTC)