Re: Simplify with NestedLessLess?

*To*: mathgroup at smc.vnet.net*Subject*: [mg106503] Re: Simplify with NestedLessLess?*From*: dr DanW <dmaxwarren at gmail.com>*Date*: Fri, 15 Jan 2010 03:15:51 -0500 (EST)*References*: <himsqd$jd0$1@smc.vnet.net>

Thank you for asking this question; I was wondering exactly the same thing yesterday. It is fairly common in physics papers to have a complex expression and a statement like "and in the short wavelength limit (a k << 1)", then a simpler expression in which higher powers of a k are dropped. I think I saw another posting asking this question in a different way on this group just a few days ago. I don't have an answer, I am just piling on my support for this as a built in function. Daniel