Question: Is the Euler characteristic always 2?

Its Euler characteristic is then 1 + (โˆ’1)n โ€” that is, either 0 or 2.

What is Eulers characteristic used for?

For example, Eulers characteristic can be used to diagnose osteoporosis. The Euler characteristic for connected planar graphs is also V โ€“ E +F, where F is the number of faces in the graph, including the exterior face.

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