# Graduate Logic Seminar: Difference between revisions

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The Graduate Logic Seminar is an informal space where graduate | 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:''' | * '''When:''' Mondays 3:30-4:30 PM | ||

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

* '''Organizers:''' [https:// | * '''Organizers:''' Karthik Ravishankar and [https://sites.google.com/wisc.edu/antonio 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. | The talk schedule is arranged at the beginning of each semester. If you would like to participate, please contact one of the organizers. | ||

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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. | |||

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

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

==Previous Years== | '''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''' === | |||

'''Title:''' Some History of Logic | |||

'''Abstract:''' The lives of great thinkers are sometimes overshadowed by their achievements-and there is perhaps no better illustration of this phenomenon than the life and work of Gödel. | |||

Take a look at Gödel's own timeline and see how war and other mathematicians influenced him. | |||

=== '''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 [[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 14:26, 3 October 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**

**Title:** Some History of Logic

**Abstract:** The lives of great thinkers are sometimes overshadowed by their achievements-and there is perhaps no better illustration of this phenomenon than the life and work of Gödel.
Take a look at Gödel's own timeline and see how war and other mathematicians influenced him.

**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.