Title
A Lifting Theorem with Applications to Symmetric Functions.
Abstract
We use a technique of “lifting” functions introduced by Krause and Pudlak [Theor. Comput. Sci., 1997], to amplifydegree-hardness measures of a function to corresponding monomial-hardness properties of thelifted function. We then show that any symmetric function F projects onto a “lift” of anothersuitable symmetric function f . These two key results enable us to prove several results on thecomplexity of symmetric functions in various models, as given below:1. We provide a characterization of the approximate spectral norm of symmetric functions interms of the spectrum of the underlying predicate, affirming a conjecture of Ada et al. [APPROX-RANDOM, 2012]which has several consequences.2. We characterize symmetric functions computable by quasi-polynomial sized Thresholdof Parity circuits.3. We show that the approximate spectral norm of a symmetric function f characterizes the(quantum and classical) bounded error communication complexity of f o XOR.4. Finally, we characterize the weakly-unbounded error communication complexity of symmetricXOR functions, resolving a weak form of a conjecture by Shi and Zhang [Quantum Information u0026 Computation, 2009]
Year
Venue
Field
2017
FSTTCS
Lift (force),Quantum,Symmetric function,Discrete mathematics,Computer science,Matrix norm,Communication complexity,Quantum information,Conjecture,Computation
DocType
Citations 
PageRank 
Conference
0
0.34
References 
Authors
0
2
Name
Order
Citations
PageRank
Arkadev Chattopadhyay115019.93
Mande Nikhil S.254.13