MapThread
MapThread[f, , , ... , , , ... , ... ] gives f[, , ... ], f[, , ... ], ... . MapThread[f, , , ... , n] applies f to the parts of the at level n.
Example: MapThread[f, a1, a2, b1, b2] . MapThread[f, a1, a2, b1, b2] . MapThread[f, a1, a2, b1, b2, 2] . See The Mathematica Book: Section 2.2.4. See also: Map, Thread, Inner.
Further Examples
MapThread[f, 
, 
, ... 
, 
, 
, ... 
, ... 
] gives 
f[
, 
, ... ], f[
, 
, ... ], ... 
. 
, 
, ... 
, n] applies f to the parts of the 
at level n. 
a1, a2
, 
b1, b2
] 
. 
a1, a2
, 
b1, b2
] 
. 
a1, a2
, 
b1, b2
, 2] 
. 
