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    Department of Math & Stats Colloquium - Hester Graves (Center for Computing Sciences)

    When:
    Friday, October 18, 2024
    2:30 PM – 3:30 PM
    Where:
    Jeffery Hall
    Room: 234
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    Description:

    Math & Stats Department Colloquium
    Friday, October 18, 2024

    Time: 2:30 pm

    Place: Jeffery Hall, Room 234

    Speaker: Hester Graves (Center for Computing Sciences)

    Title: The Minimal Euclidean Function on the Gaussian Integers

    Abstract: Motzkin proved that every Euclidean domain $R$ has a minimal Euclidean function, $\phi_R$ . He showed that when $R = \mathbb{Z}$, the minimal function is $\phi_{\mathbb{Z}} (x) =\ log 2_ |x|$. For over seventy years, $\phi_{\mathbb{Z}}$ was the only example of an explicitly-computed minimal function in a number field. We give the first explicitly-computed minimal function in a non-trivial number field, $\phi_{\mathbb{Z}[i]}$ . The proof introduces a new way to visualize quotients $\mathbb{Z}[i]$. This talk is accessible to undergraduates.

    Contact:
    Jen Powell
    powell@queensu.ca
    Cost:
    n/a
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