It is this operation +./ . *. we rewrite in peculiar ways for unknown reasons?

[ x=: 1 0 1 1 0

1 0 1 1 0

[ y=: 5 6 $1 0 0 0 0 0 0 1 0 1 1 0 0 1 0 0 0 1 0 0 0 0 1 1 0 1 1 1 0 1

1 0 0 0 0 0

0 1 0 1 1 0

0 1 0 0 0 1

0 0 0 0 1 1

0 1 1 1 0 1

x +./ . *. y

1 1 0 0 1 1


/Erling


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