Joseph Cummings
I am a postdoc at the University of Notre Dame working with Jonathan Hauenstein. My research interests are in applied algebraic geometry, algebraic statistics, and phylogenetics.
I received my PhD from the University of Kentucky in 2022, and I graduated with a BS in mathematics from the University of Kansas in 2016.
Publications
Invariants for level-1 phylogenetic networks under the Cavendar-Farris-Neyman Model (with Benjamin Hollering and Chris Manon) (to appear in Advances in Applied Mathematics)
https://arxiv.org/abs/2102.03431
Generalized Cut Polytopes for Binary Hierarchical Models (with Jane Coons, Benjamin Hollering, and Aida Maraj) (to appear in Algebraic Statistics)
https://arxiv.org/abs/2008.00043
A Fano compactification of the SL_2(C) free group character variety (with Chris Manon) (to appear in Geometriae Dedicata)
https://arxiv.org/abs/2209.02766
Pre-prints
The Pfaffian Structure of CFN Phylogenetic Invariants (with Benjamin Hollering, Elizabeth Gross, Samuel Martin, and Ikenna Nometa)
https://arxiv.org/abs/2312.07450
Computing Implicitizations of Multi-Graded Polynomial Maps (with Benjamin Hollering)
https://arxiv.org/abs/2311.07678
Multi-graded Macaulay Dual Spaces (with Jonathan Hauenstein)
https://arxiv.org/abs/2310.11587
The well-poised property and torus quotients (with Chris Manon)
https://arxiv.org/abs/2009.09105
Presentations
You can find my talk at the CodEx Seminar about phylogenetic networks from 6/1/21 at this link! Here are some of my other presentations.
Invariants of Phylogenetic Networks, (SIAM AG 23, Minisymposium Algebraic Methods in Biological systems)
Invariants of Phylogenetic Networks, (University of Michigan, January 20, 2023)
Invariants of Phylogenetic Networks, (JMM 2023, Special Session on Applied Enumerative Geometry)
Fano Compactifications of SL_2 character varieties, (University of Notre Dame, AGCA seminar, Fall 2022)
Arrangement varieties are well-poised. (UK, algebra seminar, Sept 2020)
Compactifications of SL_2-character varieties. (UK, algebra seminar, Feb 2020)
Khovanskii bases and rational, complexity 1 T-varieties. (UK, algebra seminar, Sep 2018)
A Bijection between parking functions of length n and regions of the Shi Arrangement. (UK, graduate colloquium, Oct 2016)
Conferences
Algebraic Statistics and Our Changing World (Long Program, Fall 2023)
SIAM AG 2023
JMM 2023
LMS Bath Summer School (July 2021)
The Triangle Lectures in Combinatorics (Nov. 2019 and Nov. 2020)
Workshop on Toric Degenerations (July 2020)
AlGeCom (March 2020, poster on phylogenetic networks)
Western Algebraic Geometry Series (Nov. 2019, poster on well-poised T-varieties)
MSRI Toric Varieties Summer School (June 2019)
Meeting on Applied Algebraic Geometry (April 2019, poster on well-poised T-varieties)
Algebraic Geometry North-eastern Series (Sept. 2018)
Graduate Student Combinatorics Conference (April 2017)
Teaching
University of Notre Dame
ACMS 40485 - Applied Complex Analysis (Spring 2024)
ACMS 30530 Introduction to Probability (Fall 2022, Spring 2023, Spring 2024)
University of Kentucky
Primary Instructor
College Algebra (MA 109) (Spring 2018 and Fall 2021)
Math for Elementary School Teachers I (MA 201) (Fall 2019 and Fall 2020)
Math for Elementary School Teachers II (MA 202) (Spring 2020)
Matrix Algebra (MA 322) Summer (2018)
Intro to Contemporary Mathematics (MA 111) (Summer 2017)
Teaching Assistant
Math Excel, Calculus II (MA 114) (Spring 2019)
Math Excel, Calculus I (MA 113) (Fall 2018)
Calculus II (MA 114) (Spring 2017 - Fall 2017)
Pre-Calculus (MA 110) (Fall 2016)