Re: Parenthesis reduction

• To: mathgroup at smc.vnet.net
• Subject: [mg126924] Re: Parenthesis reduction
• From: "Nasser M. Abbasi" <nma at 12000.org>
• Date: Mon, 18 Jun 2012 05:43:04 -0400 (EDT)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com
• References: <jrlfoa\$c2s\$1@smc.vnet.net>

```On 6/17/2012 3:47 PM, Mat' G. wrote:
> Which command should one use to get
> 	{a, b, c}, {d, e, f}, {g, h, i}
> from
> 	{{a, b, c}, {d, e, f}, {g, h, i}}
> ?
>

I am confused by this question. In general, an
expression, is either a list or not a list.

So what is

{a, b, c}, {d, e, f}, {g, h, i}

supposed to be? it is not a list. and it is not not a list
either. So, I do not know what it is.

Unless you asking for a much more basic question such
as using an idex to access an entry in a list?

lis={{a,b,c},{d,e,f},{g,h,i}}
lis[[1]]
lis[[2]]
lis[[3]]

Out[89]= {a,b,c}
Out[90]= {d,e,f}
Out[91]= {g,h,i}

--Nasser

```

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