New quiz AQQ271 about a Jordan Curve Theorem applied for sheep
As one of the most famous theorem in topology (just recently demonstrated in 1980 ,
the Jordan curve (drawn in black) divides the plane into an "inside" region (light blue) and
an "outside" region (pink). Basically, the theorem says all the points (and only those)
in each of the 2 regions are connected without crossing the border.
It appears obvious but the formal proof was not evident.
Let’s applied it to our sheep spread in- and out-side a bizarre enclosure partially masked by 3 large trees.
Question: Despite of the trees, determine which of the 6 sheep A,B,C,D,E,F are inside and outside the enclosure.
Good luck and try to be among the first ones!
