[]=*= <
2. [ ]=* [ ].
.
1 | 2 | |||
1 | 2 |
*
* | *1 | *2 | * | |
1 | 2 |
<
3. : [XY]=[X][Y].
.
1 | 2 | y1 | y2 | |||
1 | 2 | py1 | py2 |
XY | 1*y1 | 1* y2 | 2*y1 | 2* y2 |
1*py1 | 1*py2 | 2*py1 | 2*py2 |
<
.
: [X1X]=[X1][X].
4. :: [X+Y]=[X]+M[Y].
.
: [X1++X]=[X1]++[X].