**Calendar**

**January 10**:
**MOPA**
**1:00pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Are higher-rank arithmetic groups uniformly bi-interpretable with arithmetic?**

**Arseniy Sheydvasser**
Technion

**Abstract**

**January 24**:
**MOPA**
**1:00pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Representation of unlimited integers**

**Karel Hrbacek**
CUNY

**Abstract**

**January 31**:
**MOPA**
**1:00pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Order types of models of arithmetic without induction**

**Lorenzo Galeotti**
Amsterdam University College

**Abstract**

**February 3**:
**Logic Workshop**
**In-person**
**Absolute Undefinability**

**Roman Kossak**
CUNY

**Abstract**

**February 3**:
**Set Theory Seminar**
**12:30pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Highly connected Ramsey theory**

**Jing Zhang**
University of Toronto

**Abstract**

**February 7**:
**MOPA**
**1:00pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Effective infinitesimals in R**

**Mikhail Katz**
Bar Ilan University

**Abstract**

**February 10**:
**Logic Workshop**
**Satisfaction and saturation**

**Athar Abdul-Quader**
Purchase College

**Abstract**

**February 10**:
**Set Theory Seminar**
**12:15pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Strategy and determinacy in infinite Hex**

**Davide Leonessi**
CUNY

**Abstract**

**February 14**:
**MOPA**
**1:00pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**On the significance of parameters in the choice and сomprehension schemata in the 2nd-order Peano arithmetic**

**Vladimir Kanovei**
Institute for Information Transmission Problems

**Abstract**

**February 17**:
**Logic Workshop**
**Computability and the Absolute Galois Group of $\mathbb Q$**

**Russell Miller**
CUNY

**Abstract**

**February 21**:
**MOPA**
**1:00pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**First-order classification and non-standard models**

**Alexei Miasnikov**
Stevens Institute of Technology

**Abstract**

**February 24**:
**Logic Workshop**
**Generalizing a question of Gromov**

**Johanna Franklin**
Hofstra University

**Abstract**

**February 28**:
**MOPA**
**1:00pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Vopěnka's Alternative Set Theory and its mathematical context**

**Zuzana Hanikova**
Czech Academy of Sciences

**Abstract**

**March 3**:
**Logic Workshop**
**The complexity of radical constructions in rings and modules**

**Chris Conidis**
CUNY

**Abstract**

**March 7**:
**MOPA**
**1:00pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Some generalizations on the representation of unlimited natural numbers**

**Bellaouar Djamel**
University 08 Mai 1945 Guelma

**Abstract**

**March 10**:
**Set Theory Seminar**
**12:15pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Forcing more choice over the Chang model**

**James Holland**
Rutgers University

**Abstract**

**March 10**:
**Logic Workshop**
**Seminar cancelled**

**March 14**:
**MOPA**
**1:00pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Satisfaction classes with the full collection scheme**

**Bartosz Wcisło**
University of Gdańsk

**Abstract**

**March 17**:
**Set Theory Seminar**
**12:15pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Model-Theoretic Characterizations of Weak Vopěnka's Principle**

**Jonathan Osinski**
University of Hamburg

**Abstract**

**March 17**:
**Logic Workshop**
**Rotation equivalence and rigidity**

**Filippo Calderoni**
Rutgers University

**Abstract**

**March 21**:
**MOPA**
**1:00pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Satisfaction classes with the full collection scheme: Part II**

**Bartosz Wcisło**
University of Gdańsk

**Abstract**

**March 24**:
**Logic Workshop**
**Parameter-free comprehension in second-order arithmetic**

**Victoria Gitman**
CUNY

**Abstract**

**March 31**:
**Logic Workshop**
**Galois-Tukey reductions and canonical structure in the Cichoń diagram**

**Corey Switzer**
University of Vienna

**Abstract**

**March 31**:
**Set Theory Seminar**
**12:15pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**$\Sigma_n$-correct forcing axioms**

**Benjamin Goodman**
CUNY

**Abstract**

**April 7**:
**Logic Workshop**
**No seminar (spring break)**

**April 14**:
**Set Theory Seminar**
**12:15pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Cardinal preserving embeddings and strongly compact cardinals**

**Gabriel Goldberg**
University of California, Berkeley

**Abstract**

**April 14**:
**Logic Workshop**
**No seminar**

**April 18**:
**MOPA**
**1:30pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**The chain-antichain principle and proof size**

**Katarzyna W. Kowalik**
University of Warsaw

**Abstract**

**April 21**:
**Set Theory Seminar**
**12:15pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**The proper forcing axiom for $\aleph_1$-sized posets and the continuum**

**Mohammad Golshani**
Institute for Research in Fundamental Sciences

**Abstract**

**April 21**:
**Logic Workshop**
**How bad could it be? The semilattice of definable sets in continuous logic**

**James Hanson**
University of Maryland

**Abstract**

**April 25**:
**MOPA**
**1:00pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Pathologies in Satisfaction Classes**

**Mateusz Łełyk**
University of Warsaw

**Abstract**

**April 28**:
**Set Theory Seminar**
**12:15pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Building generalized indiscernibles in AECs with set theory**

**Will Boney**
Texas State University

**Abstract**

**April 28**:
**Logic Workshop**
**No seminar**

**May 5**:
**Logic Workshop**
**Classification via effective lists**

**Karen Lange**
Wellesley College

**Abstract**

**May 5**:
**Set Theory Seminar**
**10:00am** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Realizing Frege's Basic Law V, provably in ZFC**

**Joel David Hamkins**
Notre Dame University

**Abstract**

**May 9**:
**MOPA**
**1:00pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Pathologies in Satisfaction Classes: part II**

**Mateusz Łełyk**
University of Warsaw

**Abstract**

**May 12**:
**Logic Workshop**
**Recent developments in the model theory of Abelian lattice-ordered groups**

**Brian Wynne**
CUNY

**Abstract**

**May 19**:
**Set Theory Seminar**
**12:15pm** NY time

**Virtual** (email Victoria Gitman for meeting id)
**Some old and new results on nonamalgamable forcing extensions**

**Miha Habič**
Bard College at Simon's Rock

**Abstract**

**May 23**:
**MAMLS Spring Fling at Rutgers University**

The MAMLS Spring Fling meeting will take place May 23-26 at Rutgers University, New Brunswick, New Jersey. More information about the meeting can be found on its website. Registration is free and everyone who plans to attend is encounrated to register for logistics purposes.