Abstract
We note that the above set is in fact star-shaped with respect to the origin. In this book, we concentrate almost uniquely on star-shaped sets, and therefore have given a somewhat informal proof of the above exercise.
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© 2011 Springer Basel AG
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Alpay, D. (2011). Complex Numbers: Geometry. In: A Complex Analysis Problem Book. Springer, Basel. https://doi.org/10.1007/978-3-0348-0078-5_2
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DOI: https://doi.org/10.1007/978-3-0348-0078-5_2
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