Structure and enumeration of (3+1)-free posets [PDF]
, 2014 A poset is (3+1)-free if it does not contain the disjoint union of chains of length 3 and 1 as an induced subposet. These posets play a central role in the (3+1)-free conjecture of Stanley and Stembridge. Lewis and Zhang have enumerated (3+1)-free posets
Guay-Paquet, Mathieu +2 more
core +1 more source
Maternal and Child Nutrition, 2020 Suboptimal infant and young child feeding (IYCF) practices have profound implications on child survival, health, growth, and development. First, our study analysed trends in 18 IYCF indicators and height‐for‐age z‐score (HAZ) and stunting prevalence ...
G. Hanley-Cook +4 more
semanticscholar +1 more source
Decomposition of heartbeat time series: scaling analysis of the sign sequence [PDF]
Computers in Cardiology 2000. Vol.27 (Cat. 00CH37163), 2001 The cardiac interbeat (RR) increment time series can be decomposed into two sub-sequences: a magnitude series and a sign series. The authors show that the sign sequence, a simple binary representation of the original RR series, retains fundamental ...
Y. Ashkenazy +6 more
semanticscholar +1 more source
Difference operators for partitions under the Littlewood decomposition [PDF]
The Ramanujan journal, 2016 The concept of t-difference operator for functions of partitions is introduced to prove a generalization of Stanley’s theorem on polynomiality of Plancherel averages of symmetric functions related to contents and hook lengths.
Paul-Olivier Dehaye +2 more
semanticscholar +2 more sources
Scaling in late stage spinodal decomposition with quenched disorder. [PDF]
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 1995 We study the late stages of spinodal decomposition in a Ginzburg-Landau mean field model with quenched disorder. Random spatial dependence in the coupling constants is introduced to model the quenched disorder.
M. Gyure +7 more
semanticscholar +1 more source
Phanerozoic Large Igneous Province, Petroleum System, and Source Rock Links
Geophysical Monograph Series, Page 191-228., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Steven C. Bergman +2 more
wiley +1 more source
Cross comparison and modelling of Goldman Sachs, Morgan Stanley, JPMorgan Chase, Bank of America, and Franklin Resources [PDF]
, 2012 We have studied statistical characteristics of five share price time series. For each stock price, we estimated a best fit quantitative model for the monthly closing price as based on the decomposition into two defining consumer price indices selected ...
Kitov, Ivan
core +2 more sources
The behavior of Stanley depth under polarization [PDF]
, 2014 Let $K$ be a field, $R=K[X_1, ..., X_n]$ be the polynomial ring and $J \subsetneq I$ two monomial ideals in $R$. In this paper we show that $\mathrm{sdepth}\ {I/J} - \mathrm{depth}\ {I/J} = \mathrm{sdepth}\ {I^p/J^p}-\mathrm{depth}\ {I^p/J^p}$, where ...
Bogdan Ichim +3 more
core +3 more sources
Identifying influential spreaders in complex networks [PDF]
, 2010 Networks portray a multitude of interactions through which people meet, ideas are spread, and infectious diseases propagate within a society. Identifying the most efficient "spreaders" in a network is an important step to optimize the use of available ...
Maksim Kitsak +7 more
semanticscholar +1 more source
Stanley decompositions of the Bracket ring.
MATHEMATICA SCANDINAVICA, 1990 We give an explicit Stanley decomposition of the bracket ring \({\mathbb{B}}_{n,d}\), that is, the commutative ring generated by the \(d\times d\)-minors of a generic \(n\times d\)-matrix. A Stanley decomposition is a direct sum decomposition of the additive group of the ring, each summand of which is a bracket monomial times a subring generated freely
Sturmfels, Bernd, White, Neil
openaire +2 more sources