Re: Parenthesis reduction

*To*: mathgroup at smc.vnet.net*Subject*: [mg126928] Re: Parenthesis reduction*From*: awnl <awnl at gmx-topmail.de>*Date*: Mon, 18 Jun 2012 05:44:27 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*References*: <jrlfoa$c2s$1@smc.vnet.net>

Hi, > Which command should one use to get > {a, b, c}, {d, e, f}, {g, h, i} stricktly speaking this is not a valid mathematica expression, so it can't be done. But... > from > {{a, b, c}, {d, e, f}, {g, h, i}} > ? ... you most probably want Sequence, which will create something that you can pass to a function: arglist = {{a, b, c}, {d, e, f}, {g, h, i}} argseq = Sequence@@arglist; f[argseq] of course you can also directly "Apply" (@@ is the shortcut for "Apply") the function to the list of arguments: f@@aglist hth, albert