Item 1970/3 - Theorem [and] proof

1 item, paper

"Theorem [and] proof", typescript (copy), single page, undated and unattributed, but perhaps datable within broad parameters to about 1970, considering the paper. The typescript first states the theorem that "If a sample of coins is drawn at random from a large stock of a coinage which is divisible into a number of distinct and independent sub-groups, then provided the sample is large the expected proportion of the volume of the stock which belongs to the sub-groups not represented in the sample is equal to the expected number of sub-groups represented uniquely in the sample, divided by the number of coins in the sample". There follows the more lengthy mathematical proof, presented in a series of steps.