Graduate Logic Seminar: Difference between revisions
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We will finish part 5 of Wong's notes and then start on part 6. | We will finish part 5 of Wong's notes and then start on part 6. | ||
=== April 19 - Alice Vidrine === | |||
Title: End and cofinal extensions | |||
We will finish part 6 of Wong's notes. | |||
=== April 26 - Josiah Jacobsen-Grocott === | |||
Title: Recursive saturation | |||
We will start on part 7 of Wong's notes. | |||
== Previous Years == | == Previous Years == | ||
The schedule of talks from past semesters can be found [[Graduate Logic Seminar, previous semesters|here]]. | The schedule of talks from past semesters can be found [[Graduate Logic Seminar, previous semesters|here]]. | ||
Revision as of 22:10, 12 April 2022
The Graduate Logic Seminar is an informal space where graduate students and professors present topics related to logic which are not necessarily original or completed work. This is a space focused principally on practicing presentation skills or learning materials that are not usually presented in a class.
- When: Tuesdays 4-5 PM
- Where: Van Vleck 901
- Organizers: Jun Le Goh
The talk schedule is arranged at the beginning of each semester. If you would like to participate, please contact one of the organizers.
Sign up for the graduate logic seminar mailing list: join-grad-logic-sem@lists.wisc.edu
Spring 2022
The graduate logic seminar this semester will be run as MATH 975. Please enroll if you wish to participate.
We plan to cover the first 9 parts of Tin Lok Wong's notes, as well as a few other relevant topics which are not covered in the notes:
- Properness of the induction/bounding hierarchy (chapter 10 of Models of Peano Arithmetic by Kaye is a good source)
- Tennenbaum's theorem (this is a quick consequence of the main theorem of part 4, so it should be combined with part 4 or part 5)
- Other facts found in chapter 1 of David Marker's thesis.
January 25 - organizational meeting
We will meet to assign speakers to dates.
February 1 - Steffen Lempp
I will give an overview of the topics we will cover:
1. the base theory PA^- and the induction and bounding axioms for Sigma_n-formulas, and how they relate to each other,
2. the equivalence of Sigma_n-induction with a version of Sigma_n-separation (proved by H. Friedman),
3. the Grzegorczyk hierarchy of fast-growing functions,
4. end extensions and cofinal extensions,
5. recursive saturation and resplendency,
6. standard systems and coded types,
7. the McDowell-Specker Theorem that every model of PA has a proper elementary end extension, and
8. Gaifman's theorem that every model of PA has a minimal elementary end extension.
I will sketch the basic definitions and state the main theorems, in a form that one can appreciate without too much background.
February 8 - Karthik Ravishankar
Title: Collection axioms
We will discuss parts 1 and 2 of Wong's notes.
February 15 - Karthik Ravishankar, Yunting Zhang
Title: Collection axioms/The Weak König Lemma
Karthik will finish part 2 of Wong's notes. Then Yunting will start on part 3 of Wong's notes.
February 22 - Yunting Zhang
Title: The Weak König Lemma
We will finish part 3 of Wong's notes.
March 22 - Ang Li
Title: The Arithmetized Completeness Theorem
We will discuss part 4 of Wong's notes.
March 29 - Ang Li
Title: The Arithmetized Completeness Theorem
We will finish part 4 of Wong's notes.
April 5 - Antonio Nákid Cordero
Title: Semiregular cuts
We will start on part 5 of Wong's notes.
April 12 - Antonio Nákid Cordero/Alice Vidrine
Title: Semiregular cuts/End and cofinal extensions
We will finish part 5 of Wong's notes and then start on part 6.
April 19 - Alice Vidrine
Title: End and cofinal extensions
We will finish part 6 of Wong's notes.
April 26 - Josiah Jacobsen-Grocott
Title: Recursive saturation
We will start on part 7 of Wong's notes.
Previous Years
The schedule of talks from past semesters can be found here.