2005/09/27 | [Almost Unit]
类别(∑〖数学〗) | 评论(0) | 阅读(25) | 发表于 20:39
An almost unit is a nonunit in the integral domain of formal power series with a nonzero first coefficient, , where . Under the operation of composition, the almost units in the integral domain of formal power series over a field form a group (Henrici 1988, p. 45).
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