(a)
(b)
(c)
Figure 4:
Schematic illustration of intersection of the two subspaces. (a)
𝑑
1
=
𝑑
2
=
1
and
𝑚
=
2
; (b)
𝑑
1
=
𝑑
2
=
1
and
𝑚
=
3
; (c)
𝑑
1
=
1
,
𝑑
2
=
2
and
𝑚
=
3
.
