Bohr’s Phenomenon for Some Univalent Harmonic Functions – NASA/ADS Post author By Mark Post date March 23, 2021 In 1914 Bohr proved that there is an $r_0 \in(0,1)$ such that if a power series $\sum_{m=0}^\infty c_m z^m$ is convergent in the open unit disc and … read more ← NASA’s plans to commercialize communications and navigation from the Earth to the Moon – SpaceQ → This 12-year-old is now a college student, and she wants to work at NASA