Results 31 to 40 of about 10,695,687 (313)
Using an affinity analysis to identify phytoplankton associations
Ecology and Evolution, 2022 Phytoplankton functional traits can represent particular environmental conditions in complex aquatic ecosystems. Categorizing phytoplankton species into functional groups is challenging and time‐consuming, and requires high‐level expertise in species ...
Weiju Zhu +3 more
doaj +1 more source
The Dehn Function of Stallings’ Group [PDF]
Geometric and Functional Analysis, 2009 We prove that the Dehn function of a group of Stallings that is finitely presented but not of type F_3 is quadratic. To appear in Geometric and Functional Analysis.
Dison, Will +3 more
openaire +6 more sources
Weyl groups and elliptic solutions of the WDVV equations [PDF]
, 2010 A functional ansatz is developed which gives certain elliptic solutions of the Witten-Dijkgraaf-Verlinde-Verlinde (or WDVV) equations. This ansatz is based on the elliptic trilogarithm function introduced by Beilinson and Levin. For this to be a solution
Ian A. B. Strachan +2 more
core +1 more source
Functional central limit theorems on Lie groups: A survey [PDF]
, 1998 The general solution of the functional central limit problems for triangular arrays of random variables with values in a Lie group is described. The role of processes of finite variation is clarified.
Gyula Pap, Pap, Gyula
core +1 more source
Symmetry groups of boolean functions
European Journal of Combinatorics, 2014 We prove that every abelian permutation group, but known exceptions, is the symmetry group of a boolean function. This solves the problem posed in the book by Clote and Kranakis. In fact, our result is proved for a larger class of groups, namely, for all groups contained in direct sums of regular groups.
Mariusz Grech, Andrzej Kisielewicz 0001
openaire +4 more sources
The effect of functional roles on group efficiency [PDF]
, 2004 The usefulness of ‘roles’ as a pedagogical approach to support small group performance can be often read, however, their effect is rarely empirically assessed.
Rob L. Martens +19 more
core +1 more source
, 2023 International audienceThe three main ecological categories of earthworms (anecic, endogeic, epigeic) are often used as proxies for functional groups. This is troublesome since they were not designed for this purpose and thus the relevance of such a use ...
Fernández Marchán, Daniel +10 more
core +1 more source
Fire and Rhizosphere Effects on Bacterial Co-Occurrence Patterns
Microorganisms, 2023 Fires are common in Mediterranean soils and constitute an important driver of their evolution. Although fire effects on vegetation dynamics are widely studied, their influence on the assembly rules of soil prokaryotes in a small-scale environment has ...
Effimia M. Papatheodorou +2 more
doaj +1 more source
FUNCTIONS ON GROUPS AND COMPUTATIONAL COMPLEXITY [PDF]
International Journal of Algebra and Computation, 2004 We give some connections between various functions defined on finitely presented groups (isoperimetric, isodiametric, Todd–Coxeter radius, filling length functions, etc.), and we study the relation between those functions and the computational complexity of the word problem (deterministic time, nondeterministic time, symmetric space). We show that the
openaire +3 more sources
Combined Use of Charcoal, Sago Bark Ash, and Urea Mitigate Soil Acidity and Aluminium Toxicity
Agronomy, 2021 Highly weathered tropical acidic soils are characterized by low pH, low organic matter, and aluminium and iron toxicity. These factors pose a challenge to achieving sustainable agriculture.
Nur Hidayah Hamidi +3 more
doaj +1 more source