How to remove external parentheses from a list

*To*: mathgroup at smc.vnet.net*Subject*: [mg131511] How to remove external parentheses from a list*From*: Samuel Mark Young <sy81 at sussex.ac.uk>*Date*: Fri, 16 Aug 2013 07:06:19 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-outx@smc.vnet.net*Delivered-to*: mathgroup-newsendx@smc.vnet.net

Hello, I'm looking for an easy way to remove the external parentheses from a list. The list contains integration variables and their respective limits, it currently looks something like this: {{x1,a,b},{x2,c,d},...,{xn,y,z}} However, the Integrate (or NIntegrate function) in Mathematica wants me to write it like this: {x1,a,b},{x2,c,d},...,{xn,y,z} i.e. The external parentheses have been removed I've looked around online and seen suggestions for replacing the curly brackets "{" with a blank space " ", or using Apply (@@) but can't work out the correct syntax. Thanks for any help and advice! Regards, Sam

**Follow-Ups**:**Re: How to remove external parentheses from a list***From:*Sseziwa Mukasa <mukasa@gmail.com>

**Re: How to remove external parentheses from a list***From:*Tomas Garza <tgarza10@msn.com>

**Re: How to remove external parentheses from a list***From:*Bob Hanlon <hanlonr357@gmail.com>

**Re: How to remove external parentheses from a list***From:*Murray Eisenberg <murray@math.umass.edu>