L. Ma et al., THE Q-DEFORMED NORMAL-ORDERED PRODUCT, Nuovo cimento della Societa italiana di fisica. B, Relativity, classical and statistical physics, 108(10), 1993, pp. 1075-1080
In this paper the q-normal-ordered product is realized in the q-analog
ue bosonic oscillator, the expression of the vacuum projective operato
r in the form of q-operators is obtained, some initial applications ar
e also given.