Dot .
Dot can be used as a Dyadic operator with Dyadic operands
Operator Dot means
1 2 3 +.× 4 5 6
32
3 ∧.= 3 3 3 3
1
mat
1 2
3 4
mat +.× mat ⍝ matrix product
7 10
15 22
Used with Jot in place of the left operand Jot Dot means
1 2 3 ∘.× 4 5 6 7
4 5 6 7
8 10 12 14
12 15 18 21
Note
Dot is also used as a decimal point and as a name separator in namespace reference syntax.