# Calendar

Sep
14
Tue
Logic Seminar: Ellen Hughes
Sep 14 @ 10:30 am – 11:30 am

Time and place: Tuesday September 14, 10:30am in Holmes 247.

Speaker: Ellen Hughes, undergraduate student, UH Manoa.

Title: The interest equation in Lean

Abstract: We discuss how to solve the equation $y=x(1+i)^n$ for $i$ and for $n$ in the Lean proof assistant.
This is joint work with Monica Johnson, Ryan Sasaki and Prof. Kjos-Hanssen.

Covid-19 mitigation plan:
Participants will be required to show vaccination or testing status using the Lumisight app upon entry, observe 3ft social distancing, and to wear masks throughout.

Hope to see you there.

Sep
21
Tue
Logic seminar: David Webb
Sep 21 @ 10:30 am – 11:30 am

Title:
Computing from a pair of oracles one of which is useful

Sep
28
Tue
Logic seminar: Janitha Aswedige
Sep 28 @ 10:30 am – 11:30 am

Title: Introduction to Modal Logic: Filtrations and Finite Model Property of $S_5$

Abstract : We’ll introduce some basic notions from Modal Logic namely, Kripke Frames, Standard Models, Filtrations etc. Then we’ll demonstrate the Finite Model Property of the system $S_5$ and this will be our main goal.

Oct
5
Tue
Logic seminar: Janitha Aswedige (part 2)
Oct 5 @ 10:30 am – 11:30 am
Oct
12
Tue
RJ Reiff: Modal logic
Oct 12 @ 10:30 am – 11:30 am
Oct
26
Tue
Logic Seminar: Refuting a generalization of Frankl’s conjecture for lattice-like posets
Oct 26 @ 10:30 am – 11:30 am

Speaker: B. Kjos-Hanssen
Title: Refuting a generalization of Frankl’s conjecture for lattice-like posets

Nov
2
Tue
Logic Seminar: Modal logic of provability (David Webb)
Nov 2 @ 10:30 am – 11:30 am
Nov
9
Tue
David Webb: Kripke semantics for the provability logic GL
Nov 9 @ 10:30 am – 11:30 am