• To: mathgroup at smc.vnet.net
• Subject: [mg74943] Question about Part
• From: P_ter <peter_van_summeren at yahoo.co.uk>
• Date: Thu, 12 Apr 2007 04:50:25 -0400 (EDT)

```Hello,
this is the expression:
Ã? = Ã«0[Ã«1[Ã«2[Ã«3[1, 1, 1], Ã«3[1, 1, 2], Ã«3[1, 1, 3]],
Ã«2[Ã«3[1, 2, 1], Ã«3[1, 2, 2], Ã«3[1, 2, 3]],
Ã«2[Ã«3[1, 3, 1], Ã«3[1, 3, 2], Ã«3[1, 3, 3]]],
Ã«1[Ã«2[Ã«3[2, 1, 1], Ã«3[2, 1, 2], Ã«3[2, 1, 3]],
Ã«2[Ã«3[2, 2, 1], Ã«3[2, 2, 2], Ã«3[2, 2, 3]],
Ã«2[Ã«3[2, 3, 1], Ã«3[2, 3, 2], Ã«3[2, 3, 3]]],
Ã«1[Ã«2[Ã«3[3, 1, 1], Ã«3[3, 1, 2], Ã«3[3, 1, 3]],
Ã«2[Ã«3[3, 2, 1], Ã«3[3, 2, 2], Ã«3[3, 2, 3]],
Ã«2[Ã«3[3, 1, 3], Ã«3[3, 2, 3], Ã«3[3, 3, 3]]]];
I do not get why: Ã?[[{1, 2, 3}, 1, {1, 2, 3}, 1]]
gets as result: Ã«0[Ã«2[1, 1, 1], Ã«2[2, 2, 2], Ã«2[3, 3, 3]]

My difficulties arises when I see that:Ã?[[{1, 2, 3}, 1, {1, 2, 3}]] does not contain the last two parts of the above answer of Mathematica.
Hope, someone can explain.
P_ter

```

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