Results 81 to 90 of about 606,802 (315)

Λg-CLOSED SETS IN IDEAL TOPOLOGICAL SPACES

open access: yesJournal of New Theory, 2015
− The notion of Λg-closed sets is introduced in ideal topological spaces. Characterizations and properties of IΛg-closed sets and IΛg-open sets are given. A characterization of normalspaces is given in terms of IΛg-open sets. Also, it is established that
Ochanathevar Ravi   +3 more
doaj  

Union-closed families of sets

open access: yesJournal of Combinatorial Theory, Series A, 2013
A family of sets is union-closed if it contains the union of any two of its elements. Reimer (2003) [16] and Czedli (2009) [2] investigated the average size of an element of a union-closed family consisting of m subsets of a ground set with n elements. We determine the minimum average size precisely, verifying a conjecture of Czedli, Maroti and Schmidt
Igor Balla, Béla Bollobás, Tom Eccles
openaire   +1 more source

Members of Random Closed Sets [PDF]

open access: yes, 2009
The members of Martin-Lof random closed sets under a distribution studied by Barmpalias et al. are exactly the infinite paths through Martin-Lof random Galton-Watson trees with survival parameter $\frac{2}{3}$. To be such a member, a sufficient condition is to have effective Hausdorff dimension strictly greater than $\gamma=\log_2 \frac{3}{2}$, and a ...
David Diamondstone, Bjørn Kjos-Hanssen
openaire   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

ON NANO Λg-CLOSED SETS

open access: yesJournal of New Theory, 2017
Abstaract−In this paper, we introduce nano ∧g-closed sets in nano topological spaces. Some properties of nano ∧g-closed sets and nano ∧g-open sets are weaker forms of nano closed sets and nano open ...
İlangovan Rajasekaran, Ochanan Nethaji
doaj  

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

open access: yesFEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

Costly arbitrage and asset prices: evidence from closed-end funds [PDF]

open access: yes, 2002
If arbitrage is costly and noise traders are active, asset prices may deviate from fundamental values for long periods of time. We use a sample of 158 closed-end funds to show that noise-trader sentiment, as proxied by retail-investor flows, leads to ...
Gemmill, Gordon   +1 more
core  

Unavoidable subprojections in union-closed set systems of infinite breadth [PDF]

open access: yes, 2021
We consider union-closed set systems with infinite breadth, focusing on three particular configurations ${\mathcal T}_{\rm max}(E)$, ${\mathcal T}_{\rm min}(E)$ and ${\mathcal T}_{\rm ort}(E)$.
Ghandehari, Mahya   +2 more
core  

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

Mining Closed Itemsets for Coherent Rules: An Inference Analysis Approach [PDF]

open access: yes, 2011
Past observations have shown that a frequent item set mining algorithm are alleged to mine the closed ones because the finish offers a compact and a whole progress set and higher potency.
Prof. S.Ramakrishna   +1 more
core   +1 more source

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