My name is Florian Sprung. Some people call me Ian Sprung. My work is in arithmetic geometry and number theory and currently supported by NSF grant 2001280. My Erdős number is three.

You can reach me here.

Here is my teaching page.

**Writings:**

**Chromatic Selmer groups for imaginary quadratic fields**

*to appear in J.T. Nombres de Bordeaux*

*with C*é*dric Dion, **published** in Abhandlungen aus dem mathematischen Seminar Hamburg*

*with Antonio Lei, **published ** in Israel Journal of Mathematics*

*with F. Castella, M. Ciperiani, and C. Skinner*

*submitted*

*published** in RIMS Bessatsu*

*with **Ken Ono** and **Larry Rolen**, **published **in Advances in Mathematics*

*published** in Research in Number Theory *

*published** in Algebra and Number Theory *

*published** in Journal für die reine und angewandte Mathematik (Crelles Journal)*

*published** in RIMS Bessatsu *

*published **in the Journal of Number Theory*

(The video features Shinichi Kobayashi and Robert Pollack)

**Iwasawa Theory for Elliptic Curves**- in Japanese

*published in the Proceedings of the 6th **Kinosaki Shinjin Seminar** *

*Before getting into academia, I worked at **the Kirakuen retirement home**. *

*Here is an essay** by **Kodaira** on how to read. *