Results 51 to 60 of about 1,159,790 (329)
The expanding Asgard archaea and their elusive relationships with Eukarya
mLife, 2022 The discovery of Asgard archaea and the exploration of their diversity over the last 6 years have deeply impacted the scientific community working on eukaryogenesis, rejuvenating an intense debate on the topology of the universal tree of life (uTol ...
Violette Da Cunha +2 more
doaj +1 more source
Circles in the Sky: Finding Topology with the Microwave Background Radiation [PDF]
, 1996 If the universe is finite and smaller than the distance to the surface of last scatter, then the signature of the topology of the universe is writ large on the microwave background sky.
+22 more
core +4 more sources
Accelerator Testing of the General Antiparticle Spectrometer, a Novel Approach to Indirect Dark Matter Detection [PDF]
, 2005 We report on recent accelerator testing of a prototype general antiparticle spectrometer (GAPS). GAPS is a novel approach for indirect dark matter searches that exploits the antideuterons produced in neutralino-neutralino annihilations.
Baret B +22 more
core +1 more source
Landau level of fragile topology [PDF]
, 2018 The flat bands in twisted bilayer graphene (TBG) are known to carry a new type of topology called fragile topology. Here, the authors show that the flat bands in TBG have their Hofstadter butterfly generically connected with the Hofstadter butterfly of ...
Biao Lian, Fang Xie, B. Bernevig
semanticscholar +1 more source
Factoriality and the Pin-Reutenauer procedure [PDF]
Discrete Mathematics & Theoretical Computer Science, 2016 We consider implicit signatures over finite semigroups determined by sets of pseudonatural numbers. We prove that, under relatively simple hypotheses on a pseudovariety V of semigroups, the finitely generated free algebra for the largest such signature ...
J. Almeida, J. C. Costa, M. Zeitoun
doaj +1 more source
The nonmultiplicativity of the signature modulo 8 of a fibre bundle is an Arf–Kervaire invariant [PDF]
, 2017 It was proved by Chern, Hirzebruch and Serre that the signature of a fibre bundle is multiplicative if the fundamental group of the base acts trivially on the cohomology ring of the fibre with real coefficients, in which case the signature of the total ...
Rovi, C.
core +3 more sources
Molecular Oncology, EarlyView.Combining PTEN protein assessment and transcriptomic profiling of prostate tumors, we uncovered a network enriched in senescence and extracellular matrix (ECM) programs associated with PTEN loss and conserved in a mouse model. We show that PTEN‐deficient cells trigger paracrine remodeling of the surrounding stroma and this information could help ...
Ivana Rondon‐Lorefice +16 more
wiley +1 more source
A new, unique signature of the true cusp [PDF]
Annales Geophysicae, 2001 The "cusp proper" is generally understood to be the region enclosed by the outermost magnetospheric field lines as they map to low altitudes. It is therefore a weak-field region with continuous contact with magnetosheath plasma.
W. R. Keith +2 more
doaj +1 more source
Solvable Pseudo-Riemannian Symmetric Spaces [PDF]
, 2003 We present an approach to solvable pseudo-Riemannian symmetric spaces based on papers of M.Cahen, M.Parker and N.Wallach. Thereby we reproduce the classification of solvable symmetric triples of Lorentzian signature $(1,n-1)$ and complete the case of ...
Neukirchner, Thomas
core
The G-Signature Theorem Revisited
, 1998 In a strengthening of the G-Signature Theorem of Atiyah and Singer, we compute, at least in principle (modulo certain torsion of exponent dividing a power of the order of G), the class in equivariant K-homology of the signature operator on a G-manifold ...
Rosenberg, Jonathan
core +3 more sources