Kronecker product
sub kronecker_product ( @a, @b ) {
return (@a X @b).map: { .[0].list X* .[1].list };
}
.say for kronecker_product([ <1 2>, <3 4> ],
[ <0 5>, <6 7> ]);
say '';
.say for kronecker_product([ <0 1 0>, <1 1 1>, <0 1 0> ],
[ <1 1 1 1>, <1 0 0 1>, <1 1 1 1>]);
Output:
(0 5 0 10)
(6 7 12 14)
(0 15 0 20)
(18 21 24 28)
(0 0 0 0 1 1 1 1 0 0 0 0)
(0 0 0 0 1 0 0 1 0 0 0 0)
(0 0 0 0 1 1 1 1 0 0 0 0)
(1 1 1 1 1 1 1 1 1 1 1 1)
(1 0 0 1 1 0 0 1 1 0 0 1)
(1 1 1 1 1 1 1 1 1 1 1 1)
(0 0 0 0 1 1 1 1 0 0 0 0)
(0 0 0 0 1 0 0 1 0 0 0 0)
(0 0 0 0 1 1 1 1 0 0 0 0)
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