Results 71 to 80 of about 1,519,388 (324)
Primitive Groups Synchronize Non-uniform Maps of Extreme Ranks [PDF]
, 2014 Let $\Omega$ be a set of cardinality $n$, $G$ a permutation group on $\Omega$, and $f:\Omega\to\Omega$ a map which is not a permutation. We say that $G$ synchronizes $f$ if the semigroup $\langle G,f\rangle$ contains a constant map.
Araújo, João, Cameron, Peter J.
core +3 more sources
On the null-homotopy of graphs
Discrete Mathematics, 1987 The author presents an example of a graph G in which every cycle is the mod 2 sum of triangles but no edge-deleted subgraph G-e has the same property, disproving thereby a conjecture of \textit{P. Duchet, M. Las Vergnas} and \textit{H. Meyniel} [Discrete Math. 62, 145-154 (1986; Zbl 0609.05032)].
openaire +1 more source
Aggressive prostate cancer is associated with pericyte dysfunction
Molecular Oncology, EarlyView.Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero +11 more
wiley +1 more source
Scale-resolved analysis of brain functional connectivity networks with spectral entropy
NeuroImage, 2020 Functional connectivity is derived from inter-regional correlations in spontaneous fluctuations of brain activity, and can be represented in terms of complete graphs with continuous (real-valued) edges.
Carlo Nicolini +3 more
doaj +1 more source
Detecting Activations over Graphs using Spanning Tree Wavelet Bases [PDF]
, 2012 We consider the detection of activations over graphs under Gaussian noise, where signals are piece-wise constant over the graph. Despite the wide applicability of such a detection algorithm, there has been little success in the development of ...
Krishnamurthy, Akshay +2 more
core
, 2014 We define and investigate a quantisation of null hypersurfaces in the context of loop quantum gravity on a fixed graph. The main tool we use is the parametrisation of the theory in terms of twistors, which has already proved useful in discussing the ...
Speziale, Simone, Zhang, Mingyi
core +3 more sources
Intein‐based modular chimeric antigen receptor platform for specific CD19/CD20 co‐targeting
Molecular Oncology, EarlyView.CARtein is a modular CAR platform that uses split inteins to splice antigen‐recognition modules onto a universal signaling backbone, enabling precise, scarless assembly without re‐engineering signaling domains. Deployed here against CD19 and CD20 in B‐cell malignancies, the design supports flexible multi‐antigen targeting to boost T‐cell activation and
Pablo Gonzalez‐Garcia +9 more
wiley +1 more source
Frontiers in Human Neuroscience, 2020 Classification learning is a preeminent human ability within the animal kingdom but the key mechanisms of brain networks regulating learning remain mostly elusive.
Antonio G. Zippo +5 more
doaj +1 more source
Configuration models as an urn problem
Scientific Reports, 2021 A fundamental issue of network data science is the ability to discern observed features that can be expected at random from those beyond such expectations. Configuration models play a crucial role there, allowing us to compare observations against degree-
Giona Casiraghi, Vahan Nanumyan
doaj +1 more source
Time series irreversibility: a visibility graph approach [PDF]
, 2011 We propose a method to measure real-valued time series irreversibility which combines two differ- ent tools: the horizontal visibility algorithm and the Kullback-Leibler divergence.
A. Nuñez +33 more
core +3 more sources