Professor
Contact Information
PDL C-416
Office Hours
Monday 2:30-3:50
Fields of Interest
Biography
PhD, Hebrew University, 1999
Courses Taught
Winter 2025
Autumn 2024
Spring 2024
Winter 2024
Autumn 2023
Spring 2023
Winter 2023
Autumn 2022
Spring 2022
Winter 2022
News & Events
Related News
- Amzi Jeffs named NSF Graduate Fellow (April 19, 2018)
- New AMS Fellows (November 1, 2016)
Related Events
- Combinatorics and Geometry Seminar: TBA -
- Combinatorics and Geometry Seminar: TBA -
- Combinatorics and Geometry Seminar: Homomesy on stable set polytopes of paths -
- Combinatorics and Geometry Seminar: A proof of Rubey's lattice conjecture -
- Combinatorics and Geometry Seminar: Higher Bruhat Orders: Affine Generalizations and Machine Learning Applications -
- Combinatorics and Geometry Seminar: Grothendieck polynomials, determinantal varieties, and equivariant Hilbert series -
- Combinatorics and Geometry Seminar: Complexity for billiards in regular N-gons -
- Combinatorics and Geometry Seminar: The combinatorial invariance conjecture -
- Combinatorics and Geometry Seminar: Graphical designs find combinatorial structures -
- Combinatorics and Geometry Seminar: Braid Group Presentations and Triangulations of the Permutahedron -
- Combinatorics and Geometry Seminar: Maximizing the Number of Monotone Paths on 3-regular graphs -
- Combinatorics and Geometry Seminar: Upper and Lower Bounds for Chromatic Symmetric Functions -
- Combinatorics and Geometry Seminar: Spherical friezes -
- Combinatorics and Geometry Seminar: Skeins on tori -
- Combinatorics and Geometry Seminar: On permutation statistics, root enumeration and Gelfand models -
- Combinatorics and Geometry Seminar: Random Locally Flat-Foldable Origami -
- Combinatorics and Geometry Seminar: On equilibrium positions of convex bodies -
- Combinatorics and Geometry Seminar: Matrix loci, orbit harmonics, and shadow play -
- Combinatorics and Geometry Seminar: Double forest polynomials and the quasisymmetric flag variety -
- Combinatorics and Geometry Seminar: Combinatorics of locally gentle algebras -
- Combinatorics and Geometry Seminar: Special episode: Graduate Student Lightning Talks -
- Combinatorics and Geometry Seminar: Diagonal orbits in double flag varieties -
- Combinatorics and Geometry Seminar: Generalized degree polynomials of trees -
- Combinatorics and Geometry Seminar: Plane partitions and rowmotion on rectangular and trapezoidal posets -
- Combinatorics and Geometry Seminar: Valuated Delta Matroids and Principal Minors -
- Combinatorics and Geometry Seminar: Face Numbers of Squishy Polytopes -
- Combinatorics and Geometry Seminar: Conformally rigid graphs -
- Combinatorics and Geometry Seminar: The Squared Grassmannian -
- Combinatorics and Geometry Seminar: Lawrence polytopes of a graph -
- Combinatorics and Geometry Seminar: Combinatorial statistics and the q,t-Catalan numbers -
- Combinatorics and Geometry Seminar: On e-positivity of the chromatic symmetric function -
- Combinatorics and Geometry Seminar: Chromatic Symmetric Functions and Polynomial Invariants of Trees -
- Combinatorics and Geometry Seminar: Log-Concavity of the Alexander Polynomial for Special Alternating Links -
- Combinatorics and Geometry Seminar: Smooth Points on Positroid Varieties -
- Combinatorics and Geometry Seminar: Cyclically ordered quivers -
- Combinatorics and Geometry Seminar: Standard monomials for positroid varieties -
- Combinatorics and Geometry Seminar: Dissecting an Integer Polymatroid -
- Combinatorics and Geometry Seminar: Colorful Permutation Statistics and Cycle Type -
- Combinatorics and Geometry Seminar: The merging operation and (d-i)-simplicial i-simple d-polytopes -
- Combinatorics and Geometry Seminar: h-vector Inequalities Under Weak Maps -
- Combinatorics and Geometry Seminar: The inhomogeneous multispecies PushTASEP and Macdonald polynomials -
- Combinatorics and Geometry Seminar: Smooth Combinatorial Cubes are IDP -
- Career Transitions: Surviving and Thriving in the First Year of Grad School -
- Combinatorics and Geometry Seminar: Shuffle bases and quasisymmetric power sums -
- Combinatorics and Geometry Seminar: The Poincare-Extended ab-Index -
- Combinatorics and Geometry Seminar: Increasing subsequences, orbit harmonics, and shadow play -
- Combinatorics and Geometry Seminar: The first bijective proof of the ASM theorem -
- Combinatorics and Geometry Seminar: Incidences and Tilings -
- Combinatorics and Geometry Seminar: Solving puzzles of shellable simplicial spheres -
- Combinatorics and Geometry Seminar: Moshe's Insanity -
- CANCELED: Combinatorics and Geometry Seminar: The Poincare-Extended ab-Index -
- Combinatorics and Geometry Seminar: Tropicalization of the principal minors of positive semidefinite matrices -
- Combinatorics and Geometry Seminar: Farahat-Higman Algebras for Classical Linear Groups -
- Combinatorics and Geometry Seminar: Distributional properties of colored multiset Eulerian polynomials -
- Combinatorics and Geometry Seminar: A regular unimodular triangulation of the matroid base polytope -
- Combinatorics and Geometry Seminar: Numerical semigroups, minimal presentations, and posets -
- Combinatorics and Geometry Seminar: A noncommutative Schur function approach to chromatic symmetric functions -
- Combinatorics and Geometry Seminar: Extremal crystals and atom-positivity -
- Combinatorics and Geometry Seminar: Matroid Schubert varieties and equivariant compactifications -
- Combinatorics and Geometry Seminar: Quantum Bruhat graphs and tilted Richardson varieties -
- Current Topics Seminar: The fascinating world of polytopes -
- Combinatorics and Geometry Seminar: Snake Graphs for Graph LP Algebras -
- Combinatorics and Geometry Seminar: Projections of Richardson Varieties -
- Combinatorics and Geometry Seminar: Face Numbers and Angles of Polytopes -
- Combinatorics and Geometry Seminar: Combinatorics of two-boundary Temperley-Lieb algebras -
- Combinatorics and Geometry Seminar: Combinatorics of CAT(0) cubical complexes, crossing complexes and co-skeletons -
- Combinatorics and Geometry Seminar: Central transversals and hyperplane arrangements -
- Combinatorics and Geometry Seminar: Tautological classes of matroids -
- Combinatorics and Geometry Seminar: Mixed Volumes of Normal Complexes -
- Combinatorics and Geometry Seminar: Chip-firing game on metric graphs and combinatorics of their Jacobians -
- Combinatorics and Geometry Seminar: SL_4 web bases from hourglass plabic graphs -
- Combinatorics and Geometry Seminar: The Polyhedral Combinatorics of Pivot Rules -
- Combinatorics and Geometry Seminar: Higher Weak Order of Affine Permutations -
- Combinatorics and Geometry Seminar: Algebra, Geometry & Combinatorics of the Pinhole Camera -
- Combinatorics and Geometry Seminar: The geometric method, matroids and related simplicial complexes -
- Combinatorics and Geometry Seminar: Vertex labeling properties on graphs and complexes -
- Combinatorics and Geometry Seminar: Combinatorial mutations and birational maps -
- Combinatorics and Geometry Seminar: Unimodular triangulations of sufficiently large dilations -
- Combinatorics and Geometry Seminar: Transfer systems and model structures for combinatorialists -
- Combinatorics and Geometry Seminar: Problems around Combinatorial Graphs and Distance Geometry -
- Combinatorics and Geometry Seminar: Subdivisions of Shellable Complexes -
- Combinatorics and Geometry Seminar: Odd diagrams and patterns -
- Combinatorics and Geometry Seminar: 3D plabic graphs and cluster structures on type A braid varieties -
- Combinatorics and Geometry Seminar: 2-LC triangulated manifolds are exponentially many -
- Combinatorics and Geometry Seminar: On the anisotropy theorem of Papadakis and Petrotou -
- Combinatorics and Geometry Seminar: Enumerating interval graphs and d-representable complexes -
- Combinatorics and Geometry Seminar: Hurwitz numbers via topological recursion -
- Combinatorics and Geometry Seminar: A Pattern Avoidance Criteria for Smoothness of Positroid Varieties Via Decorated Permutations, Spirographs, and Johnson Graphs -
- Combinatorics and Geometry Seminar: Maximal Chain Descent Orders -
- Combinatorics and Geometry Seminar: Flavors of the Fubini-Bruhat Order -
- Combinatorics and Geometry Seminar: Higher Categorical Associahedra -
- Combinatorics and Geometry Seminar: Pattern-avoiding parking functions -
- Combinatorics and Geometry Seminar: Graph limits and graph homomorphism inequalities -
- Combinatorics and Geometry Seminar: A Proof of Grünbaum’s Lower Bound Conjecture for polytopes, lattices, and strongly regular pseudomanifolds -
- Combinatorics and Geometry Seminar: q-Whittaker functions, finite fields, and Jordan forms -
- Combinatorics and Geometry Seminar: Grothendieck-to-Lascoux Expansions -
- Combinatorics and Geometry Seminar: Linear relations among Schubert structure coefficients -
- Combinatorics and Geometry Seminar: Planar Tanglegram Layouts and Edge Insertion -
- Combinatorics and Geometry Seminar: Common tangents to polytopes and convex bodies -
- Combinatorics and Geometry Seminar: Non-realizability of polytopes via linear programming -
- Combinatorics and Geometry Seminar: Braiding and twisting open positroid varieties -
- Combinatorics and Geometry Seminar: From symmetric functions, to knots, and back again -
- CANCELED: Combinatorics and Geometry Seminar: Braiding and twisting open positroid varieties -
- Combinatorics and Geometry Seminar: Multiplicities of maximal dominant weights of some affine Lie algebra modules -
- Combinatorics and Geometry Seminar: When is the probability of avoiding a graph super-exponentially small? -
- Combinatorics and Geometry Seminar: Helly type problems: topology, the cascade conjecture, and graph coloring -
- Combinatorics and Geometry Seminar: Combinatorial atlas for log-concave inequalities -
- Combinatorics and Geometry Seminar: Bumpless pipe dreams encode Gröbner geometry of Schubert polynomials -
- Combinatorics and Geometry Seminar: f*- and h*-vectors -
- Combinatorics and Geometry Seminar: P-partition generating functions of naturally labeled posets -
- Current Topics Seminar: Session 1 -
- Current Topics Seminar: Polytopes versus centrally symmetric polytopes -