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1. • CommentRowNumber1.
   • CommentAuthorDavidRoberts
   • CommentTimeSep 20th 2010
   • PermaLink
   Author: DavidRoberts
   Format: MarkdownItexAt [[period]] it was claimed that the ring of periods $P\subset \mathbb{C}$ is a subfield of $\mathbb{C}$. It is conjectured (see, e.g. <a href="http://en.wikipedia.org/wiki/Ring_of_periods">wikipedia</a>) that $1/\pi$ is not a period, and since $\pi$ _is_ a period, $P$ is not expected to be a field. I've fixed this up.

   At period it was claimed that the ring of periods $P\subset \mathbb{C}$ is a subfield of $\mathbb{C}$. It is conjectured (see, e.g. wikipedia) that $1/\pi$ is not a period, and since $\pi$ is a period, $P$ is not expected to be a field. I’ve fixed this up.