Results 11 to 20 of about 71 (54)

Analysis of photosynthetic efficiency of species Fagus sylvatica L. and silviculture Picea abies Karst. in beech habitat on Maljen mountain

open access: yes, 1998
The aim of this research was examination of vitality of beech Fagus sylvatica L. in the mountain beech forest habitat, as well as vitality of individuals of spruce Picea abies Karst.
Pavlović, Pavle   +6 more
core   +5 more sources

Space and time distribution of humus content of the district cambisole in different forest ecosystems of the Cer mountain

open access: yes, 1997
In order to comprehend the link between the litter decomposition process and the formation of humus on the one hand, and the complex processes of transformation and disintegration of organic matter on the other, the time and space dynamics of humus ...
Pavlović, Pavle   +3 more
core   +5 more sources

Descriptive set-theoretic aspects of closed sets of uniqueness in the non-abelian setting

open access: yes, 2022
We study the family of closed sets of (extended) uniqueness of a locally compact group G which is not necessarily abelian. We prove some preservation properties concerning this family of sets as well as their operator-theoretic counterpart, locate their ...
Paulos, Joao Pedro,   +2 more
core   +1 more source

Allelopathic investigations in the Fraxino angustifoliae-Quercetum robojus ( Jov. et Tomic 1979) forest community with the autumnal truffle (Tuber macrosporum Vitt.)

open access: yes, 1999
Both the total phenols and phenolic acids (PA) were analyzed in the litter and soil of the mixed Quercus robur-Fraxinus angustifolia forest with the autumnal truffle (Tuber macrosporum Vitt.).
Milenković, Miroljub   +3 more
core   +5 more sources

ANALYTIC EQUIVALENCE RELATIONS SATISFYING HYPERARITHMETIC-IS-RECURSIVE

open access: yesForum of Mathematics, Sigma, 2015
We prove, in $\text{ZF}+\boldsymbol{{\it\Sigma}}_{2}^{1}$-determinacy, that, for any analytic equivalence relation $E$, the following three statements are equivalent: (1) $E$ does not have perfectly many classes, (2) $E$ satisfies hyperarithmetic-is ...
ANTONIO MONTALBÁN
doaj   +1 more source

A dichotomy of sets via typical differentiability

open access: yesForum of Mathematics, Sigma, 2020
We obtain a criterion for an analytic subset of a Euclidean space to contain points of differentiability of a typical Lipschitz function: namely, that it cannot be covered by countably many sets, each of which is closed and purely unrectifiable (has a ...
Michael Dymond, Olga Maleva
doaj   +1 more source

CONTINUITY OF UNIVERSALLY MEASURABLE HOMOMORPHISMS

open access: yesForum of Mathematics, Pi, 2019
Answering a longstanding problem originating in Christensen’s seminal work on Haar null sets [Math. Scand. 28 (1971), 124–128; Israel J. Math. 13 (1972), 255–260; Topology and Borel Structure.
CHRISTIAN ROSENDAL
doaj   +1 more source

Hyperfiniteness of boundary actions of acylindrically hyperbolic groups

open access: yesForum of Mathematics, Sigma
We prove that, for any countable acylindrically hyperbolic group G, there exists a generating set S of G such that the corresponding Cayley graph $\Gamma (G,S)$ is hyperbolic, $|\partial \Gamma (G,S)|>2$ , the natural action of G on ...
Koichi Oyakawa
doaj   +1 more source

A model of the Axiom of Determinacy in which every set of reals is universally Baire

open access: yesForum of Mathematics, Sigma
The consistency of the theory $\mathsf {ZF} + \mathsf {AD}_{\mathbb {R}} + {}$ ‘every set of reals is universally Baire’ is proved relative to $\mathsf {ZFC} + {}$ ‘there is a cardinal that is a limit of Woodin cardinals and of strong ...
Paul B. Larson   +2 more
doaj   +1 more source

KŐNIG’S LINE COLORING AND VIZING’S THEOREMS FOR GRAPHINGS

open access: yesForum of Mathematics, Sigma, 2016
The classical theorem of Vizing states that every graph of maximum degree $d$ admits an edge coloring with at most
ENDRE CSÓKA   +2 more
doaj   +1 more source

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