# Graduate Logic Seminar: Difference between revisions

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* '''When:''' Mondays 3:30-4:30 PM | * '''When:''' Mondays 3:30-4:30 PM | ||

* '''Where:''' Van Vleck | * '''Where:''' Van Vleck B139 | ||

* '''Organizers:''' Karthik Ravishankar and [https://sites.google.com/wisc.edu/antonio Antonio Nakid Cordero] | * '''Organizers:''' Karthik Ravishankar and [https://sites.google.com/wisc.edu/antonio Antonio Nakid Cordero] | ||

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Sign up for the graduate logic seminar mailing list: join-grad-logic-sem@lists.wisc.edu | Sign up for the graduate logic seminar mailing list: join-grad-logic-sem@lists.wisc.edu | ||

== | == Fall 2022 == | ||

=== September 12 - Organizational Meeting === | |||

=== | |||

We will meet to assign speakers to dates. | We will meet to assign speakers to dates. | ||

=== | === '''September 19 - Karthik Ravishankar''' === | ||

'''Title:''' Lowness for Isomorphism | |||

Title: | |||

'''Abstract:''' A Turing degree is said to be low for isomorphism if it can only compute an isomorphism between computable structures only when a computable isomorphism already exists. In this talk, we show that the measure of the class of low for isomorphism sets in Cantor space is 0 and that no Martin Lof random is low for isomorphism. | |||

=== | === '''September 26 - Antonio Nakid Cordero''' === | ||

'''Title:''' When Models became Polish: an introduction to the Topological Vaught Conjecture | |||

'''Abstract:''' Vaught's Conjecture, originally asked by Vaught in 1961, is one of the most (in)famous open problems in mathematical logic. The conjecture is that a complete theory on a countable language must either have countably-many or continuum-many non-isomorphic models. In this talk, we will discuss some of the main ideas that surround this conjecture, with special emphasis on a topological generalization in terms of the continuous actions of Polish groups. | |||

=== '''October 3 - Yunting Zhang''' === | |||

=== | === '''October 10 - Yuxiao Fu''' === | ||

=== '''October 17 - Alice Vidrine''' === | |||

=== '''October 24 - Hongyu Zhu''' === | |||

=== | === '''October 31 - Break for Halloween''' === | ||

=== '''November 7 - John Spoerl''' === | |||

=== '''November 14 - Josiah Jacobsen-Grocott''' === | |||

=== | === '''November 21 - Karthik Ravishankar''' === | ||

=== '''November 28 - Logan Heath''' === | |||

=== '''December 5 - Logan Heath''' === | |||

=== | === '''December 12 - TBA''' === | ||

== 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 07:20, 26 September 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:**Mondays 3:30-4:30 PM**Where:**Van Vleck B139**Organizers:**Karthik Ravishankar and Antonio Nakid Cordero

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

## Fall 2022

### September 12 - Organizational Meeting

We will meet to assign speakers to dates.

**September 19 - Karthik Ravishankar**

**Title:** Lowness for Isomorphism

**Abstract:** A Turing degree is said to be low for isomorphism if it can only compute an isomorphism between computable structures only when a computable isomorphism already exists. In this talk, we show that the measure of the class of low for isomorphism sets in Cantor space is 0 and that no Martin Lof random is low for isomorphism.

**September 26 - Antonio Nakid Cordero**

**Title:** When Models became Polish: an introduction to the Topological Vaught Conjecture

**Abstract:** Vaught's Conjecture, originally asked by Vaught in 1961, is one of the most (in)famous open problems in mathematical logic. The conjecture is that a complete theory on a countable language must either have countably-many or continuum-many non-isomorphic models. In this talk, we will discuss some of the main ideas that surround this conjecture, with special emphasis on a topological generalization in terms of the continuous actions of Polish groups.

**October 3 - Yunting Zhang**

**October 10 - Yuxiao Fu**

**October 17 - Alice Vidrine**

**October 24 - Hongyu Zhu**

**October 31 - Break for Halloween**

**November 7 - John Spoerl**

**November 14 - Josiah Jacobsen-Grocott**

**November 21 - Karthik Ravishankar**

**November 28 - Logan Heath**

**December 5 - Logan Heath**

**December 12 - TBA**

## Previous Years

The schedule of talks from past semesters can be found here.