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Nov 22, 2017 at 22:38 vote accept Daniel Loughran
Jun 15, 2015 at 23:19 vote accept Daniel Loughran
Nov 22, 2017 at 22:38
Jun 15, 2015 at 16:56 history edited Francesco Polizzi CC BY-SA 3.0
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Jun 15, 2015 at 14:40 history edited Francesco Polizzi CC BY-SA 3.0
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Jun 15, 2015 at 14:24 comment added pro since the word "beginner" has been used, a link to a previous answer seems relevant (I didn't know beforehand that all complete regular local rings are pretty much all created equal) mathoverflow.net/a/191737/73972
Jun 15, 2015 at 14:09 history edited Francesco Polizzi CC BY-SA 3.0
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Jun 15, 2015 at 14:01 comment added Francesco Polizzi Right, good point.
Jun 15, 2015 at 13:59 comment added David E Speyer To add a useful comment for beginners: The big difference between $\mathbb{C}$ and $\mathbb{F}_p$ here is that we can talk about convergence of power series over $\mathbb{C}$. Thus, we can take the formal power series in the $x_i$ and plug in nonzero complex numbers to get non-algebraic $K_3$'s. Over $\mathbb{F}_p$, the power series still exist, but it doesn't make sense to evaluate them anywhere except at $0$.
Jun 15, 2015 at 13:47 history edited Francesco Polizzi CC BY-SA 3.0
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Jun 15, 2015 at 13:41 history answered Francesco Polizzi CC BY-SA 3.0