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 Nov 20 awarded Yearling Apr 1 awarded Yearling Feb 27 awarded Famous Question Sep 24 awarded Autobiographer Jul 14 awarded Great Question May 7 awarded Yearling Oct 10 awarded Favorite Question Apr 15 awarded Yearling Mar 12 awarded Notable Question Nov 20 awarded Yearling Oct 26 awarded Good Question Aug 25 awarded Popular Question Nov 22 awarded Scholar Nov 22 accepted Zero to the zero power - is $0^0=1$? Nov 22 comment Zero to the zero power - is $0^0=1$? @Arturo Thank you very much for the explanation. Nov 21 comment Zero to the zero power - is $0^0=1$? @Arturo: Thanks a lot for the explanation. Yes, case with natural numbers (including 0) is pretty clear now. But, people assert that $0^0 = 1$ even for real numbers. For example: "Kahan has argued that 0.0^(0.0) should be 1, because if f(x), g(x) --> 0 as x approaches some limit, and f(x) and g(x) are analytic functions, then f(x)^g(x) --> 1 ." Nov 21 awarded Editor Nov 21 revised Zero to the zero power - is $0^0=1$? added link to the explanation on mathforum.org Nov 21 awarded Nice Question Nov 20 comment Zero to the zero power - is $0^0=1$? @Arturo: Sorry, my math really sucks, and I thought "set-theory" interpretation doesn't include my elementary case. I would be happy to get a bit more simple explanation.