Knuth up arrow notation for hyper exponentiation is such an operator. Ken's paper cited by Roger predates this notation by 10 years.
> Date: Sat, 31 Jul 2010 11:21:57 -0400 > From: "Dan Bron" <[email protected]> > Subject: [Jprogramming] Order of operations > To: "'Programming forum'" <[email protected]> > Message-ID: <013401cb30c4$1d5df050$5819d0...@us> > Content-Type: text/plain; charset="us-ascii" > > How did the current mathematical order of operations (PEMDAS) arise? > > ...introduce a new operator in the chain + * ^, would it necessarily > also have the highest precedence? ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
