Results 81 to 90 of about 84,636 (340)

Pixton's double ramification cycle relations [PDF]

open access: yes, 2016
We prove a conjecture of Pixton, namely that his proposed formula for the double ramification cycle on Mbar_{g,n} vanishes in codimension beyond g. This yields a collection of tautological relations in the Chow ring of Mbar_{g,n}.
E. Clader, F. Janda
semanticscholar   +1 more source

SIEVES AND THE MINIMAL RAMIFICATION PROBLEM [PDF]

open access: yesJournal of the Institute of Mathematics of Jussieu, 2016
The minimal ramification problem may be considered as a quantitative version of the inverse Galois problem. For a nontrivial finite group $G$, let $m(G)$ be the minimal integer $m$ for which there exists a $G$-Galois extension $N/\mathbb{Q}$ that is ...
L. Bary‐Soroker, T. Schlank
semanticscholar   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Wild ramification and restrictions to curves [PDF]

open access: yesInternational Journal of Mathematics, 2016
We prove that wild ramification of a constructible sheaf on a surface is determined by that of the restrictions to all curves. We deduce from this result that the Euler–Poincaré characteristic of a constructible sheaf on a variety of arbitrary dimension ...
Hiroki Kato
semanticscholar   +1 more source

Deciphering transcriptional plasticity in pancreatic ductal adenocarcinoma reveals alterations in sensory neuron innervation

open access: yesMolecular Oncology, EarlyView.
Pancreatic sensory neurons innervating healthy and PDAC tissue were retrogradely labeled and profiled by single‐cell RNA sequencing. Tumor‐associated innervation showed a dominant neurofilament‐positive subtype, altered mitochondrial gene signatures, and reduced non‐peptidergic neurons.
Elena Genova   +14 more
wiley   +1 more source

On ramification of Hilbert eigenvariety

open access: yes, 2020
By construction, an eigenvariety comes with a map to the weight space. It is natural to ask what the ramification locus is. For Hilbert eigenvariety, we characterize the classical ramification points in terms of the associated Galois representation. This
Hsu, Chi-Yun
core  

Topological recursion in the Ramond sector

open access: yesJournal of High Energy Physics, 2019
We investigate supereigenvalue models in the Ramond sector and their recursive structure. We prove that the free energy truncates at quadratic order in Grassmann coupling constants, and consider super loop equations of the models with the assumption that
Kento Osuga
doaj   +1 more source

Wild ramification and $$K(\pi , 1)$$K(π,1) spaces [PDF]

open access: yes, 2017
We prove that every connected affine scheme of positive characteristic is a $$K(\pi , 1)$$K(π,1) space for the étale topology. The main ingredient is the special case of the affine space $${\mathbf {A}_{k}}^{\! \! \! \! n}$$Akn over a field k.
Piotr Achinger
semanticscholar   +1 more source

Cell‐cycle‐specific lesion evolution rather than inhibition of double‐strand‐break repair underpins cisplatin radiosensitization

open access: yesMolecular Oncology, EarlyView.
We analyze cisplatin–DNA adducts (CDAs) and double‐strand breaks (DSBs) in a cell‐cycle‐dependent manner. We find that CDAs form similarly across all cell cycle phases. DSBs arise only in S‐phase. CDAs might not directly impair DSB repair, but S‐phase DSB lesions evolve in the presence of CDAs and disrupt repair in G2, also causing radiosensitization ...
Ye Qiu   +10 more
wiley   +1 more source

On ramification structures for finite nilpotent groups

open access: yes, 2019
We extend the characterization of abelian groups with ramification structures given by Garion and Penegini in [Beauville surfaces, moduli spaces and finite groups, Comm. Algebra, 2014] to finite nilpotent groups whose Sylow p-subgroups have a 'nice power
Gül Erdem, Şükran
core   +1 more source

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