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Cracking the code of complexity in computer science's P vs. NP problem

New research from the University of Waterloo is making inroads on one of the biggest problems in theoretical computer science ...
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AT&T Inc. Dep. Pfd. (Rep. 1/1000th 4.75% Pfd. Series C)

About AT&T Inc. Dep. Pfd. (Rep. 1/1000th 4.75% Pfd. Series C) AT&T, Inc. is a holding company, which engages in the provision of telecommunications and technology services. It operates through the ...