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Used as a Function

Monadic Back Slash Bar is not defined

Dyadic Back Slash Bar means

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      mat
1  2  3  4
5  6  7  8
9 10 11 12

      1 0 2 1 ⍀ mat
1  2  3  4
0  0  0  0
5  6  7  8
5  6  7  8
9 10 11 12

Used as an Operator

Back Slash Bar is a Monadic operator with a Dyadic operand

Operator Slope Bar means

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      +⍀ mat
 1  2  3  4
 6  8 10 12
15 18 21 24 

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