Pinewood Studios continued to be based at the studios since then. J. Arthur Rank (by now Lord Rank) retired as chairman in 1962 and was succeeded by John Davis, who had begun to move the Rank Organisation away from mass film production and towards more profitable and less risky businesses like bingo and holidays. The 1970s were an uncertain period for Pinewood and the film industry in general, with the studios being used more for television programmes, including ITC Entertainment's "UFO" (1970), "The Persuaders!" (1971), starring Tony Curtis and Roger Moore, and "" (1975–77). Throughout the lean years of the 1970s the
Prüfer rank seen that formula_3 will be equal to the "size of any minimal generating set" of formula_6. Those profinite groups with finite Prüfer rank are more amenable to analysis. Specifically in the case of finitely generated pro-p groups, having finite Prüfer rank is equivalent to having an open normal subgroup that is powerful. In turn these are precisely the class of pro-p groups that are p-adic analytic - that is groups that can be imbued with a p-adic manifold structure. Prüfer rank In mathematics, especially in the area of algebra known as group theory, the Prüfer rank of a pro-p group