### Author Topic: Section 1.3 Q15  (Read 330 times)

#### Jessica Long

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##### Section 1.3 Q15
« on: September 23, 2020, 10:57:04 PM »
I can see from the visual of the sets that D1 ∩ D2 is not connected, but I'm not sure how to prove this. I figure we would start by assuming the set is connected and there exists a polygonal curve in the set between some two points and then trying to derive a contradiction, but I don't know how to show the contradiction in this case.

#### Victor Ivrii

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##### Re: Section 1.3 Q15
« Reply #1 on: September 24, 2020, 01:33:32 AM »
Simple observation is enough