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http://www.cs.cmu.edu/~anupamg/adv-approx/
This material is based upon work supported by the National Science Foundation under Grant No. CCF-0747250. Any opinions, findings and conclusions or recomendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation (NSF).
1 comment:
The total number of occurrences of x and (not x) is 6, where x is a variable.
In general, x and (not x) are the same variable (namely x), but different literals.
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