Results 11 to 20 of about 1,728,747 (295)

Matrix rigidity : a survey [PDF]

open access: yes, 2022
Since Valiant’s establishment of matrix rigidity to analyse circuit complexity, various contributions to the bounds of matrix rigidity of special candidates has bloomed. In this thesis, we cover the following topics: existing explicit and semi-explicit rigidity lower bounds for various families of matrices, Paturi-Pudlák dimensions, rigid sets ...
Xie, Yangxinyu, 0000-0002-1532-6746
openaire   +3 more sources

Probabilistic rank and matrix rigidity [PDF]

open access: yesProceedings of the 49th Annual ACM SIGACT Symposium on Theory of Computing, 2017
We consider a notion of probabilistic rank and probabilistic sign-rank of a matrix, which measures the extent to which a matrix can be probabilistically represented by low-rank matrices. We demonstrate several connections with matrix rigidity, communication complexity, and circuit lower bounds, including: The Walsh-Hadamard Transform is Not Very Rigid.
Josh Alman, R. Ryan Williams
openaire   +4 more sources

On the Complexity of Matrix Rank and Rigidity [PDF]

open access: yesTheory of Computing Systems, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Meena Mahajan, Jayalal Sarma
openaire   +3 more sources

The Orbit Rigidity Matrix of a Symmetric Framework [PDF]

open access: yesDiscrete & Computational Geometry, 2010
41 pages, 12 ...
Bernd Schulze, Walter Whiteley
openaire   +2 more sources

Matrix Rigidity and the Ill-Posedness of Robust PCA and Matrix Completion [PDF]

open access: yesSIAM Journal on Mathematics of Data Science, 2019
19 pages, 3 ...
Jared Tanner   +2 more
openaire   +6 more sources

Infinite bar-joint frameworks, crystals and operator theory [PDF]

open access: yes, 2011
A theory of fl exibility and rigidity is developed for general infinite bar-joint frameworks (G; p). Determinations of nondeformability through vanishing flexibility are obtained as well as sufficient conditions for deformability.
Power, Stephen, Owen, J. C.
core   +4 more sources

Matrix and tensor rigidity and L-approximation

open access: yesJournal of Complexity, 2022
In this paper we apply methods originated in Complexity theory to some problems of Approximation. We notice that the construction of Alman and Williams that disproves the rigidity of Walsh-Hadamard matrices, provides good $\ell_p$-approximation for $p<2$.
openaire   +4 more sources

Sharp rigidity estimates for incompatible fields as a consequence of the Bourgain Brezis div-curl result

open access: yesComptes Rendus. Mathématique, 2021
In this note we show that a sharp rigidity estimate and a sharp Korn’s inequality for matrix-valued fields whose incompatibility is a bounded measure can be obtained as a consequence of a Hodge decomposition with critical integrability due to Bourgain ...
Conti, Sergio, Garroni, Adriana
doaj   +1 more source

Altering adsorbed proteins or cellular gene expression in bone-metastatic cancer cells affects PTHrP and Gli2 without altering cell growth

open access: yesData in Brief, 2015
The contents of this data in brief are related to the article titled “Matrix Rigidity Regulates the Transition of Tumor Cells to a Bone-Destructive Phenotype through Integrin β3 and TGF-β Receptor Type II”.
Jonathan M. Page   +8 more
doaj   +1 more source

Linking Matrix Rigidity with EMT and Cancer Invasion [PDF]

open access: yesDevelopmental Cell, 2020
The extracellular matrix (ECM) plays a major role in cancer progression through its increased deposition and alignment. In this issue of Developmental Cell, Fattet et al. reveal a pathway in which ECM stiffness promotes EPHA2/LYN complex activation, leading to TWIST1 nuclear localization and triggering EMT in breast cancer.
Manon, Ros   +2 more
openaire   +2 more sources

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