~/talks

Lijie Chen

what they talk about

all 6 in the filters

where they keep going back

  • ITCS3 editions2021–2023

all 5 in the filters

on a stage with

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who talks about the same things

titleconferencedate
Pseudorandomness and Pseudoentanglement in HolographyQuantum Complexity: Quantum PCP, Area Laws, and Quantum Gravity 20242024-03-18
Constructs explicit tensor-network CFT ensembles that are computationally indistinguishable yet have different RT entropies: exact RT for tree tensor networks…
Talk on
Derandomization: A Quick TutorialMinimal Complexity Assumptions for Cryptography 20232023-05-01
Shows a conditional conversion that turns any constant‑round, doubly‑efficient interactive proof into an NP-type deterministic argument with essentially the…
Talk on
New Lower Bounds and Derandomization for ACC, and a...Lower Bounds, Learning, and Average-Case Complexity2023-02-13
Proves concrete derandomization and lower-bound steps: shows MA_sub_ACC0 ⊆ i.o.NQP with quasi‑polynomial verification but polynomial‑length proofs, uses PCPs…
Talk on
Black-box Constructive Proofs are UnavoidableITCS 20232023-01-10
Main claim: proving NEXP not in a typical circuit class C is equivalent to the existence of a black-box constructivity — a randomized poly(n)-time oracle…
Talk on
New Lower Bounds and Derandomization for ACC, and a...ITCS 20232023-01-10
Proves concrete circuit lower bounds and derandomizations: shows MA_sub_ACC0 has no n^k-size ACC0 circuits by building an AC0-parity verifier from a…
Talk on
Improved Merlin-Arthur Protocols for Central Problems in Fine-Grained ComplexityITCS 20222022-01-31
Presents concrete Merlin–Arthur protocols and time bounds: near-linear MA for 3SUM by reducing to counting solutions mod d, encoding inputs as a polynomial…
Talk
Average-case Hardness of NP and PH from Worst-case Fine-grained AssumptionsITCS 20222022-01-31
Proves concrete average-case hardness from weaker worst-case fine‑grained assumptions: improving on Hirahara’s 2^{O(N/log N)} threshold, the paper shows that…
Talk
On Distributed Differential Privacy and Counting Distinct ElementsITCS 20212021-01-06
Shows that distinct counting under constant-epsilon, delta = 1/poly(n) privacy is basically impossible in the local model: any local protocol needs error ≈ N /…
Talk on
Recent Structure Lemmas for Depth-two Threshold CircuitsBoolean Devices 20182018-09-10
Shows two explicit structure lemmas: any poly-size depth-2 threshold circuit is constructively written as a disjoint OR decomposition into majority-of-majority…
Talk
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