Limits on representing boolean functions by linear combinations of simple functions: Thresholds, relus, and low-degree polynomials

RR Williams - arXiv preprint arXiv:1802.09121, 2018 - arxiv.org
We consider the problem of representing Boolean functions exactly by" sparse" linear
combinations (over $\mathbb {R} $) of functions from some" simple" class ${\cal C} $. In …

Properties of high rank subvarieties of affine spaces

D Kazhdan, T Ziegler - Geometric and Functional Analysis, 2020 - Springer
We use tools of additive combinatorics for the study of subvarieties defined by high rank
families of polynomials in high dimensional F _q F q-vector spaces. In the first, analytic part …

Noisy decoding by shallow circuits with parities: classical and quantum

J Briët, H Buhrman, D Castro-Silva… - arXiv preprint arXiv …, 2023 - arxiv.org
We consider the problem of decoding corrupted error correcting codes with NC $^ 0 [\oplus]
$ circuits in the classical and quantum settings. We show that any such classical circuit can …

Stabilizer rank and higher-order Fourier analysis

F Labib - Quantum, 2022 - quantum-journal.org
We establish a link between stabilizer states, stabilizer rank, and higher-order Fourier
analysis–a still-developing area of mathematics that grew out of Gowers's celebrated Fourier …

Cubic Goldreich-Levin

D Kim, A Li, J Tidor - Proceedings of the 2023 Annual ACM-SIAM …, 2023 - SIAM
In this paper, we give a cubic Goldreich-Levin algorithm which makes polynomially-many
queries to a function f: 𝔽 np→ ℂ and produces a decomposition of f as a sum of cubic …

[PDF][PDF] Quadratic Lower bounds on the Approximate Stabilizer Rank: A Probabilistic Approach

S Mehraban, M Tahmasbi - Proceedings of the 56th Annual ACM …, 2024 - dl.acm.org
The approximate stabilizer rank of a quantum state is the minimum number of terms in any
approximate decomposition of that state into stabilizer states. Bravyi and Gosset showed that …

Nonlinearities detection in river-tide interaction in Río Negro hydrographic lower basin (Argentina) using higher-order spectra

G García Bu Bucogen, GE Huck, MC Piccolo… - Anthropocene …, 2024 - Springer
The nonlinear interactions between river discharge, astronomical tidal wave, and local
geomorphology during storm passage or water release from upstream dams can produce …

Testing linear-invariant properties

J Tidor, Y Zhao - SIAM Journal on Computing, 2022 - SIAM
We study the property testing of functions \mathbbF_p^n→R for fixed prime p and positive
integer R. We work in the natural model where we are allowed to query the function on a …

A Dense Model Theorem for the Boolean Slice

G Kalai, N Lifshitz, D Minzer, T Ziegler - arXiv preprint arXiv:2402.05217, 2024 - arxiv.org
The (low soundness) linearity testing problem for the middle slice of the Boolean cube is as
follows. Let $\varepsilon> 0$ and $ f $ be a function on the middle slice on the Boolean …

Linear isomorphism testing of Boolean functions with small approximate spectral norm

A Ghosh, C Kayal, M Paraashar, M Roy - arXiv preprint arXiv:2308.02662, 2023 - arxiv.org
Two Boolean functions f, g: F_2^{n}\to {-1, 1} are called linearly isomorphic if there exists an
invertible matrix M\in F_2^{n\times n} such that f\circ M= g. Testing linear isomorphism is a …