12:38 AM
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Proposal: Hyphenatecrossedprodcuts. Reason: Hyphenation improves readability, and is standard practice.

2 hours later…
3:00 AM
@Feeds My vote would be to remove the tag, rather than hyphenate it.
The tag originates with this question, which is the only question with that tag.
Would anyone be upset if I simply removed that tag?

5 hours later…
7:44 AM
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Let $X$ be the circle $\mathbb{R}/\mathbb{Z}$ and let $R_{\theta}(x) = x + \theta$ mod $1$ be the rotation by an irrational angle $\theta$. Prove that the Lebesgue measure $\mu$ is ergodic. This is taken from Foundations of ergodic theory by Viana and Oliveira. I have found a few different proof...

Since consensus on meta seems to be towards removal of the tag, I have removed it from this question.

3 hours later…
11:08 AM
@MartinSleziak The tag was created again in this question: Is this an example of a valid coinduction proof? (It was recently deleted by the OP.)

3 hours later…
2:28 PM
A new tag was created by user122424.
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Is anybody aware what means here on the page 307, -3rd paragraph the acronym "framework of F. of S." ? I.e. what the letters F. and S. stand for ?

2 hours later…
4:12 PM
@MartinSleziak That seems really unlikely to be useful in my opinion. I've removed it.