Results 11 to 20 of about 3,990 (244)

Automating Resolution is NP-Hard [PDF]

open access: yes2019 IEEE 60th Annual Symposium on Foundations of Computer Science (FOCS), 2019
We show that the problem of finding a Resolution refutation that is at most polynomially longer than a shortest one is NP-hard. In the parlance of proof complexity, Resolution is not automatable unless P = NP. Indeed, we show that it is NP-hard to distinguish between formulas that have Resolution refutations of polynomial length and those that do not ...
Atserias, Albert, Muller, Moritz Martin
openaire   +5 more sources

Many bounded versions of undecidable problems are NP-hard

open access: yesSciPost Physics, 2023
Several physically inspired problems have been proven undecidable; examples are the spectral gap problem and the membership problem for quantum correlations.
Andreas Klingler, Mirte van der Eyden, Sebastian Stengele, Tobias Reinhart, Gemma de las Cuevas
doaj   +1 more source

Denture base adaptation, retention, and mechanical properties of BioHPP versus nano-alumina-modified polyamide resins [PDF]

open access: yesJournal of Dental Research, Dental Clinics, Dental Prospects, 2021
Background. Continuous development of denture base materials has led to the introduction of innovative alternatives to polymethyl methacrylate.
Radwa Mohsen Kamal Emera   +1 more
doaj   +1 more source

Improved lower bound for the complexity of unique shortest vector problem

open access: yesCybersecurity, 2023
Unique shortest vector problem (uSVP) plays an important role in lattice based cryptography. Many cryptographic schemes based their security on it. For the cofidence of those applications, it is essential to clarify the complexity of uSVP with different ...
Baolong Jin, Rui Xue
doaj   +1 more source

Altering almond protein function through partial enzymatic hydrolysis for creating gel structures in acidic environment

open access: yesCurrent Research in Food Science, 2022
Protein inadequacy is the major problem for most plant-based dairy yoghurt substitutes. This study investigated three limited degree of hydrolysis (DH: 1%, 5%, and 9%) of almond protein and the combined effect of DH and hydrolysed almond protein (HP) to ...
Jia Zhao   +3 more
doaj   +1 more source

INFLATING BALLS IS NP-HARD [PDF]

open access: yesInternational Journal of Computational Geometry & Applications, 2011
A collection [Formula: see text] of balls in ℝd is δ-inflatable if it is isometric to the intersection [Formula: see text] of some d-dimensional affine subspace E with a collection [Formula: see text] of (d + δ)-dimensional balls that are disjoint and have equal radius.
Batog, Guillaume, Goaoc, Xavier
openaire   +3 more sources

Clifford Circuits can be Properly PAC Learned if and only if $\textsf{RP}=\textsf{NP}$ [PDF]

open access: yesQuantum, 2023
Given a dataset of input states, measurements, and probabilities, is it possible to efficiently predict the measurement probabilities associated with a quantum circuit?
Daniel Liang
doaj   +1 more source

Wordle is NP-hard

open access: yes, 2022
Wordle is a single-player word-guessing game where the goal is to discover a secret word $w$ that has been chosen from a dictionary $D$. In order to discover $w$, the player can make at most $\ell$ guesses, which must also be words from $D$, all words in $D$ having the same length $k$.
Lokshtanov, Daniel   +1 more
openaire   +4 more sources

Protein Design is NP-hard [PDF]

open access: yesProtein Engineering, Design and Selection, 2002
Biologists working in the area of computational protein design have never doubted the seriousness of the algorithmic challenges that face them in attempting in silico sequence selection. It turns out that in the language of the computer science community, this discrete optimization problem is NP-hard. The purpose of this paper is to explain the context
Pierce, Niles A., Winfree, Erik
openaire   +3 more sources

Terrain Guarding is NP-Hard [PDF]

open access: yesSIAM Journal on Computing, 2010
Summary: A set \(G\) of points on a terrain, also known as an \(x\)-monotone polygonal chain, is said to guard the terrain if every point on the terrain is seen by a point in \(G\). Two points on the terrain see each other if and only if the line segment between them is never strictly below the terrain.
King, James, Krohn, Erik
openaire   +3 more sources

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