PALS

Current local time in Boulder

 

Fall 2024

• Tue, 3 December 2024, 1:25 pm MT: Oyeyemi Oyebola (Brandon University, Canada), Moufang Polyloop and its Algebraic Properties
• Tue, 19 November 2024, 1:25 pm MT: Max Hadek (Charles University Prague, Czech Republic), A non-finitely related minimal Taylor algebra
• Tue, 12 November 2024, 1:25 pm MT: Paolo Marimon (TU Vienna, Austria), Minimal operations over permutation groups
• Tue, 5 November 2024, 1:25 pm MT: Gergő Gyenizse (University of Szeged, Hungary), On general Hobby-McKenzie varieties
• Tue, 29 October 2024, 1:25 pm MDT: Matt Evans (Washington and Jefferson College), On spectra of BCK-algebras
• Tue, 22 October 2024, 1:25 pm MDT: Dylene Agda Souza de Barros (Universidade Federal de Uberlandia, Brasil), On half-homomorphisms of some types of Loops
• Tue, 15 October 2024, 1:25 pm MDT: Roman Feller (TU Vienna, Austria), Graph orientation problems with forbidden tournaments
• Tue, 8 October 2024, 12:00 pm MDT: Sebastian Meyer (TU Dresden, Germany), Finite simple groups in the primitive positive constructability poset
• Tue, 24 Sep 2024, 1:25 pm MDT: Charlotte Aten (CU Boulder), Higher-dimensional book-spaces
• Tue, 17 September 2024, 1:25 pm MDT: Nik Ruskuc (University of St Andrews, UK), Heights of congruence lattices of semigroups
• Tue, 10 Sep 2024, 1:25 pm MDT: Keith Kearnes (CU Boulder), Locally finite varieties whose finitely generated projectives are free

Spring 2024

• Tue, 30 Apr 2024, 1:25 pm MDT: Guenter Pilz (Johannes Kepler University Linz, Austria), Which (sub)direct decompositions are "useful"?
• Tue, 16 Apr 2024, 1:25 pm MDT: Piotr Kawalek (TU Wien, Austria), Complexity of satisfiability and equivalence problems in finite algebras
• Tue, 2 Apr 2024, 1:25 pm MDT: Will Brian (University of North Carolina at Charlotte), Does P(ω)/fin know its right hand from its left?
• Thu, 21 Mar 2024, 11 am MDT: Mikhail V. Volkov (Ural Federal University), Strongly nonfinitely based monoids
• Tue, 12 Mar 2024, 2:25 pm MDT: Stefano Fiovaranti (Charles University Prague), On some admissible sublattices of a congruence lattice
• Tue, 27 February 2024, 1:25 pm MT: Chase Meadors (CU Boulder), Local finiteness in varieties of MS4-algebras
• Tue, 20 February 2024, 1:25 pm MT: John T. Baldwin (University of Illinois at Chicago), Infinite combinatorics from finite structures
• Tue, 6 February 2024, 1:25 pm MT: Peter Mayr (CU Boulder), Filtered Boolean powers and their automorphism groups

Fall 2023

• Tue, 12 December 2023, 1:25 pm MT: H. Peter Gumm (Philipps University Marburg, Germany), Lucid reasons behind balanced identities
• Tue, 28 November 2023, 1:25 pm MT: Clemens Schindler (Technical University Vienna, Austria), Unique Polish semigroup topology: novel techniques to crack the semigroup of increasing functions on the rational numbers
• Tue, 14 November 2023, 1:25 pm MT: Nóra Szakács (University of Manchester, UK), Closure operators on group Cayley graphs, and presentations of F-inverse monoids
• Tue, 7 November 2023, 1:25 pm MT: Nik Ruskuc (University of St Andrews, UK), Semigroup actions and finiteness conditions
• Tue, 31 Oct 2023, 1:25 pm MDT: Paolo Agliano' (University of Siena, Italy), Splittings and a (yet another!) generalization of Baker's Finite Basis Theorem
• Tue, 24 Oct 2023, 1:25 pm MDT: Patrick Wynne (CU Boulder), Clonoids and nilpotent algebras
• Tue, 17 Oct 2023, 1:25 pm MDT: Erkko Lehtonen (Khalifa University, Abu Dhabi, UAE), On clonoids of Boolean functions
• Tue, 10 Oct 2023, 1:25 pm MDT: Tomasz Penza (Warsaw University of Technology, Poland), Sufficient conditions for a Maltsev product of two varieties to be a variety
• Tue, 3 October 2023, 1:25 pm MDT: Petr Vojtěchovský (University of Denver), Solvability and supernilpotence in varieties close to groups
• Fri, 29 Sep 2023, 2:30 pm MDT: Charlotte Aten (University of Denver), Discrete neural nets and polymorphic learning
• Tue, 19 September 2023, 1:25 pm MDT: Keith Kearnes (CU Boulder), Locally finite Schreier varieties

Spring 2023

• Tue, 2 May 2023, 1:25 pm MDT: Will Boney (Texas State University) Building generalized indiscernibles in AECs with set theory
• Tue, 25 April 2023, 1:25 pm MDT: Ralph Freese (University of Hawaii), New old results
• Tue, 18 April 2023, 11 am MDT: Peter Jipsen (Chapman University), Using Prover9 for research on ortholattices and locally integral involutive po-monoids
• Tue, 11 April 2023, 1:25 pm MDT: Guram Bezhanishvili (New Mexico State University), Varieties of Heyting algebras: what we (still don’t) know
• Tue, 4 April 2023, 1:25 pm MDT: Wentao Yang (Carnegie Mellon University) An NIP-like notion in abstract elementary classes
• Tue, 28 March 2023, 1:25 pm MDT: SPRING BREAK!
• Tue, 21 March 2023, 1:25 pm MDT: Paweł Idziak (Jagiellonian University, Krakow, Poland), Circuits over finite algebras
• Tue, 14 March 2023, 1:25 pm MDT: Dmitriy Zhuk (Charles University, Prague, Czechia), Clones on 3 Elements: A New Hope
• Tue, 7 March 2023, 1:25 pm MST: Michael Kinyon (University of Denver), Conjugacy in semigroups
• Tue, 28 February 2023, 1:25 pm MST: Albert Vucaj (Technical University Vienna, Austria) Clones over finite sets up to minor-equivalence
• Tue, 21 February 2023, 5:00 pm MST: Zarathustra Brady Simplifying clones with partial semilattice operations
• Tue, 14 February 2023, 1:25 pm MST: Will Brian (University of North Carolina at Charlotte) Partitions of the real line into Borel sets
• Tue, 31 January 2023, 1:25 pm MST: Žaneta Semanišinová (Technische Universität Dresden, Germany) Complexity classification transfer for CSPs via algebraic products

Fall 2022

• Tue, 13 December 2022, 1:25 pm MST: Ralph Freese (University of Hawaii), Ralph McKenzie (Vanderbilt University), George McNulty (University of South Carolina), Walter Taylor (CU Boulder), Algebras, Lattices, Varieties Vol 1-N (ALVIN)
• Tue, 6 December 2022, 1:25 pm MST: Alex Kruckman (Wesleyan University), Ideallic independence relations
• Tue, 29 November 2022, 1:25 pm MST: Reinhard Pöschel (TU Dresden, Germany), Generalized quasiorders
• Tue, 15 November 2022, 1:25 pm MST: Jakub Opršal (ISTA Klosterneuburg, Austria), Topological characterisation of varieties with meet-semidistributive congruences
• Tue, 8 November 2022, 1:25 pm MST: Joshua Wiscons (California State University, Sacramento), Geometry of involutions in ranked groups
• Tue, 1 November 2022, 1:25 pm MDT: Bernardo Rossi (Johannes Kepler University, Linz, Austria), On when the union of two algebraic sets is algebraic
• Tue, 25 October 2022, 1:25 pm MDT: Michael Wheeler (CU Boulder), Hyperprincipal generators for regular and good ultrafilters
• Tue, 18 October 2022, 1:25 pm MDT: Samson Leung (Carnegie Mellon University), Axiomatizing AECs and applications
• Tue, 11 October 2022, 1:25 pm MDT: Marcos Mazari-Armida (CU Boulder), Characterizing some classical rings via superstability
• Tue, 27 September 2022, 1:25 pm MDT: Keith Kearnes (CU Boulder), Relative Maltsev definability

Spring 2022

• Tue, 19 April 2022, 1 pm MDT: Michael Levet (CU Boulder), Weisfeiler-Leman for group isomorphism: action compatibility
• Tue, 12 April 2022, 1 pm MDT: Thomas Kucera (University of Manitoba, Canada), Saturated free algebras and almost indiscernible theories: an overview
• Tue, 5 April 2022, 1 pm MDT: Nik Ruskuc (University of St Andrews, UK), Direct and subdirect products in combinatorial algebra, groups and semigroups
• Tue, 29 Mar 2022, 1 pm MDT: Paolo Lipparini (Universita' di Tor Vergata, Rome, Italy), Relative lengths of Maltsev conditions
• Tue, 15 Mar 2022, 1 pm MDT: Andrés Villaveces (Universidad Nacional de Colombia – Bogotá, Columbia), On the small index property for AECs with strong amalgamation properties
• Tue, 8 Mar 2022, 1 pm MST: Monica VanDieren (Robert Morris University), Twenty years of tameness
• Tue, 1 Mar 2022, 1 pm MST: James Rooney (McMaster University, Canada), Nonlinear idempotent Mal'tsev Condition Satisfaction Problems: why semilattices are hard and lattices are easier
• Tue, 22 Feb 2022, 1 pm MST: Jordan DuBeau (CU Boulder), Jónsson Jónsson-Tarski algebras
• Tue, 15 Feb 2022, 1 pm MST: Bill De Witt (University of St Andrews, UK), The number of countable subdirect powers of finite unary algebras
• Tue, 8 Feb 2022, 1 pm MST: Dragan Masulovic (University of Novi Sad, Serbia), Dual Ramsey properties for classes of algebras
• Tue, 1 Feb 2022, 1 pm MST: Ross Willard (University of Waterloo, Canada), Characterizing [alpha,beta]=0 using Kiss terms
• Tue, 25 Jan 2022, 1 pm MST: Charlotte Aten (University of Rochester), Orientable smooth manifolds are essentially quasigroups

Fall 2021

• Tue, 7 Dec 2021, 1 pm MST: Martin Goldstern (Technical University Vienna, Austria), Cardinals below the continuum
• Tue, 30 Nov 2021, 1 pm MST (second talk): Jennifer Hyndman (University of Northern British Columbia, Canada), A reader's guide to A Primer of Subquasivariety Lattices
• Tue, 30 Nov 2021, 12 pm MST (first talk): Michael Kompatscher (Charles University, Prague, Czechia), G-terms and the local-global property
• Tue, 16 Nov 2021, 2 pm MST (time change): Peter Jipsen (Chapman University), A survey of partially ordered algebras
• Tue, 9 Nov 2021,1 pm MST: Miguel Couceiro (Universite de Lorraine, France), Impossibility theorems over median algebras and beyond
• Tue, 2 Nov 2021, 1 pm MDT: Laszlo Zadori (University of Szeged, Hungary), On the primeness of 2-permutability
• Tue, 26 Oct 2021, 1 pm MDT: Michael Pinsker (Technical University Vienna, Austria), Uniqueness of Polish topologies on endomorphism monoids of countable structures
• Tue, 19 Oct 2021, 1 pm MDT: Marcel Jackson (La Trobe University Melbourne, Australia), Undecidability of representability as binary relations
• Tue, 12 Oct 2021, 1 pm MDT: Anna Zamojska-Dzienio (Warsaw University of Technology, Poland), Biracks and solutions of the Yang-Baxter equation
• Tue, 5 Oct 2021, 1 pm MDT: Philipp Rothmaler (CUNY), High and low formulas
• Tue, 28 Sep 2021, 1 pm MDT: Peter Mayr (CU Boulder), Solving small PCSPs via large CSPs

Spring 2021

• Tue, 27 Apr 2021, 1 pm MDT: Alexander Hulpke (Colorado State University), Rewriting systems and group extensions
• Tue, 20 Apr 2021, 1 pm MDT: Ross Willard (University of Waterloo, Canada), Inherently nonfinitely based nonassociative algebras
• Tue, 13 Apr 2021, 1 pm MDT: Marcos Mazari-Armida (Carnegie Mellon University), Stability in abstract elementary classes of modules
• Tue, 6 Apr 2021, 1 pm MDT: Nick Galatos (University of Denver), Amalgamation for certain conic idempotent residuated lattices
• Tue, 30 Mar 2021, 1 pm MDT: Marcin Kozik (University of Krakow, Poland), Minimal (clones with a Taylor term)
• Tue, 23 Mar 2021, 1 pm MDT: Andrew Moorhead (University of Kansas), Higher Kiss terms for modular varieties
• Tue, 16 Mar 2021, 1 pm MDT: Matthew Moore (University of Kansas), The Hidden Subgroup Problem for universal algebras
• Tue, 9 Mar 2021, 1 pm MST: Alexandra Pasi (Baylor University), Forcing $\aleph_1$-free groups to be free
• Tue, 2 Mar 2021, 1 pm MST: Andrei Bulatov (Simon Fraser University, Canada), Isomorphisms, homomorphisms, and some algebra
• Tue, 23 Feb 2021, 1 pm MST: Kristina Asimi (Charles University, Prague, Czech Republic), Finitely tractable PCSPs
• Tue, 16 Feb 2021, 1 pm MST: Erhard Aichinger (Johannes Kepler University, Linz, Austria), The degree as a measure of complexity of functions on a universal algebra
• Tue, 2 Feb 2021, 1 pm MST: Matt Valeriote (McMaster University, Canada), Near unanimity terms and the Baker-Pixley Theorem
• Tue, 26 Jan 2021, 1 pm MST: Jason Parker (Brandon University, Canada), Isotropy groups of quasi-equational theories
• Tue, 19 Jan 2021, 1 pm MST: Charlotte Aten (University of Rochester), Multiplayer rock-paper-scissors

Fall 2020

• Tue, 8 Dec 2020, 1 pm MST: Michael Hoefnagel (Stellenbosch University, South Africa), A classification of left exact categories motivated from universal algebra
• Tue, 1 Dec 2020, 1 pm MST: Tamás Waldhauser (University of Szeged, Hungary), Solution sets and polymorphism-homogeneity
• Tue, 24 Nov 2020, 1 pm MST: David Broodryk (University of Cape Town, South Africa), Characterisation of co-extensive varieties of universal algebras
• Tue, 17 Nov 2020, 1 pm MST: Erkko Lehtonen (Universidade NOVA de Lisboa, Portugal), Associative spectra of graph algebras
• Tue, 10 Nov 2020, 1 pm MST: Zurab Janelidze (Stellenbosch University, South Africa), Noetherian forms
• Tue, 3 Nov 2020, 1 pm MST: Michael Kompatscher (Oxford, UK), CEQV and CSAT for nilpotent Maltsev algebras
• Tue, 27 Oct 2020, 1 pm MDT: H. Peter Gumm (Philipps University Marburg, Germany), Free algebra functors as coalgebraic signatures
• Tue, 20 Oct 2020, 1 pm MDT: Branimir Seselja (University of Novi Sad, Serbia), Lattices with normal elements
• Tue, 13 Oct 2020, 1 pm MDT: Stefano Fiovaranti (JKU Linz, Austria), Expansions of abelian squarefree groups
• Tue, 6 Oct 2020, 1 pm MDT: Keith Kearnes (CU Boulder), Minimal strongly abelian varieties
  
• Tue, 29 Sep 2020, 1 pm MDT: Peter Mayr (CU Boulder), Varieties generated by finite simple algebras