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1. • CommentRowNumber1.
   • CommentAuthorUrs
   • CommentTimeJul 24th 2017
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   Author: Urs
   Format: MarkdownItexcreated _[[Tate diagonal]]_

   created Tate diagonal

2. • CommentRowNumber2.
   • CommentAuthorDavid_Corfield
   • CommentTimeJul 24th 2017
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   Author: David_Corfield
   Format: MarkdownItexAnd that can be seen as showing $\mathbb{S}^{t C_p}$ as the $p$-adic completion of $\mathbb{S}$, and so similarly for spectra bounded below (p. 68). Perhaps this answers your [question](https://nforum.ncatlab.org/discussion/6851/cyclotomic-spectrum/?Focus=64382#Comment_64382) at the thread on cycltomic spectra, as to whether there's anything special about $\mathbb{S}$ with trivial circle-action. It seems not, but they wanted to bring attention to this case as it's used again through the article.

   And that can be seen as showing $\mathbb{S}^{t C_p}$ as the $p$-adic completion of $\mathbb{S}$, and so similarly for spectra bounded below (p. 68).

   Perhaps this answers your question at the thread on cycltomic spectra, as to whether there’s anything special about $\mathbb{S}$ with trivial circle-action. It seems not, but they wanted to bring attention to this case as it’s used again through the article.