2 papers
math.CO2020
Transitive bounded-degree 2-expanders from regular 2-expanders
Eyal Karni, Tali Kaufman
A two-dimensional simplicial complex is called -{\em regular} if every edge of it is contained in exactly distinct triangles. It is called -expanding if its up-down two-d…
math.CO2020
High dimensional expansion using zig-zag product
Eyal Karni, Tali Kaufman
We wish to renew the discussion over recent combinatorial structures that are 3-uniform hypergraph expanders, viewing them in a more general perspective, shedding light on a previo…