The vague sum and product of a finite number of real numbers in vague arithmetic.

Mustafa Demirci The vague sum and product of a finite number of real numbers in vague arithmetic. 745-750 2005 EUSFLAT Conf. http://www.eusflat.org/publications/proceedings/EUSFLAT-LFA_2005/papers/S114-02.pdf conf/eusflat/2005 db/conf/eusflat/eusflat2005.html#Demirci05