Fernando Granha Jeronimo, Tushant Mittal, Sourya Roy, Avi Wigderson. Almost Ramanujan Expanders from Arbitrary Expanders via Operator Amplification. In 63rd IEEE Annual Symposium on Foundations of Computer Science, FOCS 2022, Denver, CO, USA, October 31 - November 3, 2022. pages 378-388, IEEE, 2022. [doi]
Abstract is missing.