Uncertainty theory is a branch of axiomatic mathematics that deals with human uncertainty, and uncertain variable is used tomodel the uncertain quantities. Inverse uncertainty distribution provides an easy way to calculate the functions of uncertain variables as well as their expected values. This paper mainly presents a formula to calculate the variance of an uncertain variable via the inverse...

vesicoureteral reflux (vur) is one of the most important causes of urinary tract infection and renal failure in children. it is a potentially self-limited disease. the aim of this study was to evaluate the clinical course and significant factors in children with primary vur. the medical charts of 125 infants and children (27.2 % males, 72.8% females) with all grades of primary vur were retrospe...

Article history: Received 2 August 2013 Received in revised form 6 November 2013 Accepted 2 December 2013 Available online 1 January 2014

Introduction Conclusions References

We derive an optimal entropic uncertainty relation for an arbitrary pair of observables in a two-dimensional Hilbert space. Such a result, for the simple case we are considering, definitively improves all the entropic uncertainty relations which have appeared in the literature.