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 Nov 28 suggested approved edit on Can every proof by contradiction also be shown without contradiction? Nov 26 comment Notation for n-ary exponentiation Nothing like that seems to work for left-associative tetration, so I have updated the question to include both right- and left-associative tetration operators. The arrow below the $4$ indicates the direction of associativity. Nov 26 revised Notation for n-ary exponentiation added 388 characters in body Nov 26 revised Notation for n-ary exponentiation added 6 characters in body Nov 26 awarded Tag Editor Nov 26 revised hyperoperation wiki excerpt added 161 characters in body Nov 26 wiki created hyperoperation excerpt Nov 26 suggested approved edit on hyperoperation tag wiki excerpt Nov 26 comment Notation for n-ary exponentiation @rayradjr Since $((({x_1}^{x_2})^{\cdots})^{x_{n-1}})^{x_n} = x_1 \text{^}\Big(\prod\limits_{i=2}^{n} x_i \Big)$, we do not need a symbol for left-associative exponentiation. However, nothing like this would work for right-associative exponentiation, hence the question about notation. Nov 26 comment Notation for n-ary exponentiation I think I finally figured out how to get them to look more like accumulation symbols, but they are higher than sum and product symbols. Nov 26 revised Notation for n-ary exponentiation added 304 characters in body Nov 26 comment Notation for n-ary exponentiation @DanBrumleve Interesting thought. I picked $\text{E}$ for exponent and $4$ for tetration, but it wouldn't render them as accumulation symbols (which is why they are inside product symbols). This way $5$ would work for pentation, etc. Nov 26 revised Limit of an n-ary product added 2 characters in body Nov 26 accepted Limit of an n-ary product Nov 25 revised Notation for n-ary exponentiation edited tags Nov 24 asked Notation for n-ary exponentiation Nov 24 answered Limit of an n-ary product Nov 24 reviewed Reviewed Describing all $\rho$-invariant inner products Nov 24 reviewed Reviewed example of area preserving twist maps Nov 24 awarded Analytical