Results 41 to 50 of about 283 (216)
Normal-preserving linear transformations
Linear Algebra and its Applications, 1992 The linear transformations on \(M_ n(\mathbb{C})\) which preserve normal matrices are described.
Kunicki, Catherine M., Hill, Richard D.
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Linear preservers of row-dense matrices [PDF]
Czechoslovak Mathematical Journal, 2016 The authors deal with linear preserves problems of row-dense matrices. A rectangular matrix \(A\) is row-dense if there are no zeros between two nonzero entries in its rows. Furthermore \(A\) is a column-dense matrix if \(A^T\) is row-dense. The structure of linear functions \(T:M_{m,n}\mapsto M_{m,n}\) that preserve or strongly preserve row-dense ...
Motlaghian, Sara M. +2 more
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Multiple ETS family transcription factors bind mutant p53 via distinct interaction regions
FEBS Letters, EarlyView.Mutant p53 gain‐of‐function is thought to be mediated by interaction with other transcription factors. We identify multiple ETS transcription factors that can bind mutant p53 and found that this interaction can be promoted by a PXXPP motif. ETS proteins that strongly bound mutant p53 were upregulated in ovarian cancer compared to ETS proteins that ...
Stephanie A. Metcalf +6 more
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Spectrum-preserving linear maps
Journal of Functional Analysis, 1986 Let X and Y be Banach spaces. A linear map \(\phi\) : \({\mathcal B}(X)\to {\mathcal B}(Y)\) is called spectrum-preserving if for every operator \(T\in {\mathcal B}(X)\) we have \(\sigma (\phi (T))=\sigma (T)\), where \(\sigma\) denotes the spectrum. We show that a spectrum-preserving surjective linear map \(\phi\) is either of the form \(\phi (T)=ATA^{
Jafarian, Ali A, Sourour, A.R
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In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS
FEBS Letters, EarlyView.We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka +11 more
wiley +1 more source
FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
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Redesigning the museum. Epistemic Challenges and Aesthetic Remedies
Museum & SocietyThe museum is in crisis. Contrary to their self-image as preservers of cultural heritage, museums seem to be losing cultural and social relevance precisely because of their historical legacy: Their collection histories, epistemological foundations ...
Sophia Prinz
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FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
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Strong k-Skew Commutativity Preserving Maps on Standard Operator Algebras
AxiomsLet A be a self-adjoint standard operator algebra on a real or complex Hilbert space of dimension ≥2, and let k∈{1,2,3}. The k-skew commutator for A,B∈A is defined by [A,B]1∗=AB−BA∗ and [A,B]k∗=[A,[A,[A,B]k−1∗1]1∗.
Ting Zhang, Xiaofei Qi
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Linear mappings preserving ρ-orthogonality
Journal of Mathematical Analysis and Applications, 2012 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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