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WESTFALISCHE LEHRSTUHL FUR INFORMATIK 2
 

Summary: RHEINISCH-
WESTF¨ALISCHE
TECHNISCHE
HOCHSCHULE
AACHEN
LEHRSTUHL F¨UR INFORMATIK 2
RWTH Aachen · D-52056 Aachen
http://www-i2.informatik.rwth-aachen.de/ 2
Prof. Dr. Ir. J.-P. Katoen
F. Gretz & F. Sher
Modeling and Verification of Probabilistic Systems
Summer term 2011
­ Series 1 ­
Hand in on April 20th before the exercise class.
Exercise 1 (4 points)
Let be a countably infinite set and define F as the smallest class of subsets of such that for all A :
|A| < + A F and A F Ac
F,
where Ac = - A denotes the complement.
a) Show the definition is non-trivial, i.e., in general F = 2.

  

Source: Ábrahám, Erika - Fachgruppe Informatik, Rheinisch Westfälische Technische Hochschule Aachen (RWTH)

 

Collections: Computer Technologies and Information Sciences