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In quantum computing the decoherence time of the qubits determines the computation time available and this time is very limited when using current hardware. In this paper we minimize the execution time (the depth) for a class of circuits…

The problem of constructing hazard-free Boolean circuits (those avoiding electronic glitches) dates back to the 1940s and is an important problem in circuit design and even in cybersecurity. We show that a DeMorgan circuit is hazard-free if…

计算复杂性 · 计算机科学 2020-12-22 Stasys Jukna

We establish connections between the size of circuits and formulas computing monotone Boolean functions and the size of first-order and nonrecursive Datalog rewritings for conjunctive queries over OWL 2 QL ontologies. We use known lower…

计算机科学中的逻辑 · 计算机科学 2012-05-15 Stanislav Kikot , Roman Kontchakov , Vladimir Podolskii , Michael Zakharyaschev

Free-minor closed classes [2] and free-planar graphs [3] are considered. Versions of Kuratowski-like theorem for free-planar graphs and Kuratowski theorem for planar graphs are considered.

组合数学 · 数学 2009-09-03 Dainis Zeps

Theoretical computer scientists have been debating the role of oracles since the 1970's. This paper illustrates both that oracles can give us nontrivial insights about the barrier problems in circuit complexity, and that they need not…

计算复杂性 · 计算机科学 2007-05-23 Scott Aaronson

We reduce the problem of proving deterministic and nondeterministic Boolean circuit size lower bounds to the analysis of certain two-dimensional combinatorial cover problems. This is obtained by combining results of Razborov (1989),…

计算复杂性 · 计算机科学 2025-03-19 Bruno P. Cavalar , Igor C. Oliveira

Dawar and Wilsenach (ICALP 2020) introduce the model of symmetric arithmetic circuits and show an exponential separation between the sizes of symmetric circuits for computing the determinant and the permanent. The symmetry restriction is…

计算复杂性 · 计算机科学 2024-09-02 Anuj Dawar , Gregory Wilsenach

We consider perturbed pendulum-like equations on the cylinder of the form $ \ddot x+\sin(x)= \varepsilon \sum_{s=0}^{m}{Q_{n,s} (x)\, \dot x^{s}}$ where $Q_{n,s}$ are trigonometric polynomials of degree $n$, and study the number of limit…

动力系统 · 数学 2016-02-02 Armengol Gasull , Anna Geyer , Francesc Mañosas

As a well understood classical fact, non- minimum phase zeros of the process located in a feedback connection cannot be cancelled by the corresponding poles of controller since such a cancellation leads to internal instability. This…

最优化与控制 · 数学 2014-01-03 Farshad Merrikh-Bayat , Farhad Bayat

We consider the problem of finding a near ground state of a $p$-spin model with Rademacher couplings by means of a low-depth circuit. As a direct extension of the authors' recent work [Gamarnik, Jagannath, Wein 2020], we establish that any…

计算复杂性 · 计算机科学 2022-01-25 David Gamarnik , Aukosh Jagannath , Alexander S. Wein

Given a boolean n by n matrix A we consider arithmetic circuits for computing the transformation x->Ax over different semirings. Namely, we study three circuit models: monotone OR-circuits, monotone SUM-circuits (addition of non-negative…

计算复杂性 · 计算机科学 2013-04-24 Magnus Find , Mika Göös , Matti Järvisalo , Petteri Kaski , Mikko Koivisto , Janne H. Korhonen

In this paper, we investigate an approach to circuit lower bounds via bounded width circuits. The approach consists of two steps: (i) We convert circuits to (deterministic or nondeterministic) bounded width circuits. (ii) We prove lower…

计算复杂性 · 计算机科学 2023-05-02 Hiroki Morizumi

We study the gap between the minimum size of a Boolean circuit (DAG) and the minimum size of a formula (tree circuit) over the And-Inverter Graph (AIG) basis {AND, NOT} with free inversions. We prove that this gap is always 0 or 1 (Unit Gap…

计算复杂性 · 计算机科学 2026-03-20 Kirill Krinkin

Let $S_d(n)$ denote the minimum number of wires of a depth-$d$ (unbounded fan-in) circuit encoding an error-correcting code $C:\{0, 1\}^n \to \{0, 1\}^{32n}$ with distance at least $4n$. G\'{a}l, Hansen, Kouck\'{y}, Pudl\'{a}k, and Viola…

计算复杂性 · 计算机科学 2024-02-02 Andrew Drucker , Yuan Li

Inspired by Solomonoffs theory of inductive inference, we propose a prior based on circuit complexity. There are several advantages to this approach. First, it relies on a complexity measure that does not depend on the choice of UTM. There…

机器学习 · 计算机科学 2023-06-27 Cole Wyeth , Carl Sturtivant

The theory of small cancellation groups is well known. In this paper we introduce the notion of Group-like Small Cancellation Ring. This is the main result of the paper. We define this ring axiomatically, by generators and defining…

环与代数 · 数学 2022-06-16 A. Atkarskaya , A. Kanel-Belov , E. Plotkin , E. Rips

A recent work (Korten, Pitassi, and Impagliazzo, FOCS 2025) established an insightful connection between static data structure lower bounds, range avoidance of $\text{NC}^0$ circuits, and the refutation of pseudorandom CSP instances,…

计算复杂性 · 计算机科学 2025-07-31 Venkatesan Guruswami , Xin Lyu , Weiqiang Yuan

Multiplication is one of the most fundamental computational problems, yet its true complexity remains elusive. The best known upper bound, by F\"{u}rer, shows that two $n$-bit numbers can be multiplied via a boolean circuit of size $O(n \lg…

数据结构与算法 · 计算机科学 2019-03-01 Peyman Afshani , Casper Benjamin Freksen , Lior Kamma , Kasper Green Larsen

The work proposes an extension of the quantum circuit formalism where qubits (wires) are circular instead of linear. The left-to-right interpretation of a quantum circuit is replaced by a circular representation which allows to select the…

量子物理 · 物理学 2016-04-12 Alexandru Paler

Nondeterministic circuits are a nondeterministic computation model in circuit complexity theory. In this paper, we prove a $3(n-1)$ lower bound for the size of nondeterministic $U_2$-circuits computing the parity function. It is known that…

计算复杂性 · 计算机科学 2015-04-28 Hiroki Morizumi