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By Dan Romik. The complete lecture-note collection is credited to him on its title page. The author note identifies Math 205A: Complex Analysis I at the University of California, Davis, in 2016 and 2018. These are course offerings. The front matter identifies the document version as 20 April 2018. Authors of the textbook followed by the course are not coauthors of these notes.

Online text: math.ucdavis.edu/~romik/data/uploads/teaching/math205a-2018/complex-analysis-2018.pdf

Cited passages: §9, items 81–82, printed p. 32, reciprocal-coordinate definitions at infinity; §9, item 84, printed p. 33, topological one-point compactification. The apparent inconsistent sphere equation in item 84 was not used.

Dan Romik works in number theory, combinatorics and probability theory.^[ref] His Complex Analysis Lecture Notes by Dan Romik also develops holomorphic functions, contour integrals and the geometry of the Riemann sphere, providing an expository connection between complex analysis and geometry.

Identity source: www.math.ucdavis.edu/people/general-profile?fac_id=romik