[seqfan] Re: New Printer's Errors from JMF

Edwin Clark eclark at math.usf.edu
Thu Feb 19 19:43:32 CET 2009

On Thu, 19 Feb 2009, Hans Havermann wrote:

> Joshua Zucker:
>> I think that there's a well-enough established convention that 2^3^4
>> means 2^(3^4) that in the absence of evidence to the contrary, I'd
>> assume that meaning.
> Let me just second this sentiment. Mathematica, for example, knows
> that unparenthesized power stacks are evaluated top-down (or assumes
> it) and that is good enough precedence for me.

On the other hand, Maple 12 returns upon execution of 2^3^4:

    Error, ambiguous use of `^`, please use parentheses

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