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Regarding the Euler's formula Vertices - Edges + Faces = constant, for planar graphs what is the most frequent number? 1 or 2?

I understand that it is 2 when the outer region is included in the count.

Best wishes,

DaTario

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- Thread starter DaTario
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- #1

- 928

- 30

Regarding the Euler's formula Vertices - Edges + Faces = constant, for planar graphs what is the most frequent number? 1 or 2?

I understand that it is 2 when the outer region is included in the count.

Best wishes,

DaTario

- #2

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- #3

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Thank you, micromass.

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