Quote:
Originally Posted by gaming_mouse
i'm not really seeing it. what is the full set of elements? can you walk through applying your rule to rows 1 and 2 in more detail?
the figure of the first line contains elements that are NOT present in the second and in the third lines. at the same time, it doesn't contains elements that, instead, are present (even if in decomposed way) in the figures of the second and third column.
for instance, in the first figure of the first line there are a great circle and a small circle, since they are not shared from the two following figures, but there are not the oblique line that is shared instead. in the first figure of the second line there is not the square, since it is shared, but there are two arched lines because they are present only in the second figure.
sorry for my english. i'm from italy.