The infixed operator + or .+ (resp. - or .-) is used for matrix addition (resp. subtraction). Note that + and - can also be used as prefixed operators, in which case they must be quoted, like ’+’ and ’-’ (see Section 14.1.3 and Section 14.1.4).
| [[1,2],[3,4]]+[[5,6],[7,8]] |
|
| [[1,2],[3,4]]-[[5,6],[7,8]] |
|
| '+'([[1,2],[3,4]],[[5,6],[7,8]],[[2,2],[3,3]]) |
|
| '-'([[1,2],[3,4]],[[5,6],[7,8]]) |
|