The 2022 IPAC seminar is co-organized by

Jim Haglund of Penn, and Anna Pun of the University of Virginia and Baruch College,

Link to the 2021 IPAC webpage

The theme of the seminar is to work through articles/arXiv preprints which represent important current developments,
at least initially in algebraic combinatorics. The seminar will meet (via zoom) on Tuesdays and Thursdays from
12-1pm Philadelphia time. Each seminar session will have a "host" who will be responsible for presenting
material, but the degree to which the seminar will be a series of lectures or more of a group discussion
may vary from week to week. If you wish to attend the talks email me or Anna to get the zoom link
(jhaglund "at symbol" math.upenn.edu, annapunying "at symbol" gmail.com).
Recordings of the talks will be made if the host is agreeable.
The first paper we will be working through is "Chromatic Quasisymmetric Functions" by Shareshian and Wachs,
available on the arXiv. The seminar will run from the end of classes in the Spring
to roughly the end of the summer break, i.e mid May through mid August.
See the table below for our schedule for the 2022 Summer Season.

**The 2022 IPAC Seminar Schedule**

Date | Host | Paper | Lecture Recordings | Lecture Notes | Expanded Lecture Notes by Anna | |

5/24 |
John Shareshian, Washington U
| Chromatic Quasisymmetric Functions | Lecture 1 | Lecture 1 Notes | Expanded Lecture 1 Notes | |

5/26 |
John Shareshian
| Chromatic Quasisymmetric Functions | Lecture 2 | Lecture 2 Notes | Expanded Lecture 2 Notes | |

5/31 |
John Shareshian
| Chromatic Quasisymmetric Functions | Lecture 3 | Lecture 3 Notes | Expanded Lecture 3 Notes | |

6/2 |
John Shareshian
| Chromatic Quasisymmetric Functions | Lecture 4 | Lecture 4 Notes | ||

6/7 | No Seminar due to the AlCoVE Conference and also the ISM Discovery School: Geometry and Combinatorics of Hessenberg Varieties | |||||

6/9 | No Seminar due to the ISM Discovery School: Geometry and Combinatorics of Hessenberg Varieties | |||||

6/14 |
Michelle Wachs, U Miami
| Chromatic Quasisymmetric Functions | Lecture 5 | Lecture 5 Notes | Expanded Lecture 5 Notes | |

6/16 |
Michelle Wachs
| Chromatic Quasisymmetric Functions | Lecture 6 | Lecture 6 Notes | Expanded Lecture 6 Notes | |

6/21 |
Michelle Wachs
| Chromatic Quasisymmetric Functions | Lecture 7 | Lecture 7 Notes | Expanded Lecture 7 Notes | |

6/23 |
Michelle Wachs
| Chromatic Quasisymmetric Functions | Lecture 8 | Lecture 8 Notes | Expanded Lecture 8 Notes | |

6/28 |
John Shareshian
| Chromatic Quasisymmetric Functions (Recent Developments) | Lecture 9 | |||

6/30 |
No Seminar - July 4 Holiday Break
| |||||

7/5 |
No Seminar - July 4 Holiday Break
| |||||

7/7 |
No Seminar - July 4 Holiday Break
| |||||

7/12 |
Anna Pun, Baruch College
| Dens, Nests and the Loehr-Warrington Conjecture | Lecture 1 | Notes Lectures 1 and 2(in Keynote) | Notes Lectures 1 and 2 (in Powerpoint) | |

7/14 |
Anna Pun, Baruch College
| Dens, Nests and the Loehr-Warrington Conjecture | Lecture 2 | |||

7/19 |
Anna Pun, Baruch College
| Dens, Nests and the Loehr-Warrington Conjecture | Lecture 3 | GL Characters, Dens and Nests, Main Theorem | ||

7/21 |
Brendon Rhoades, UC San Diego
| Conjectural connections between Superspace Models and Delta Operators | Lecture 1 | Lecture 1 Notes | ||

7/26 |
Brendon Rhoades, UC San Diego
| Conjectural connections between Superspace Models and Delta Operators | Lecture 2 | Lecture 2 Notes | ||

7/28 |
Marino Romero, UPenn
| Delta and Theta Operator Expansions | Lecture 1 Notes | |||

8/2 |
Marino Romero, UPenn
| Delta and Theta Operator Expansions | Lecture 2 Notes | |||

8/4 |
Marino Romero, UPenn
| Delta and Theta Operator Expansions | Lecture 3 Notes | |||

8/9 |
Petter Brändén, KTH
| Lorentzian Polynomials | Lecture 1 | Lecture 1 Notes | ||

8/11 |
Petter Brändén, KTH
| Lorentzian Polynomials | Lecture 2 | Lecture 2 Notes | ||

8/16 |
Petter Brändén, KTH
| Lorentzian Polynomials | ||||

8/18 |
Petter Brändén, KTH
| Lorentzian Polynomials | ||||

8/23 |
Petter Brändén, KTH
| Lorentzian Polynomials | ||||