Results 11 to 20 of about 1,953,352 (249)
On the Distance Spectral Radius of Trees with Given Degree Sequence
Discussiones Mathematicae Graph Theory, 2020 We consider the problem of maximizing the distance spectral radius and a slight generalization thereof among all trees with some prescribed degree sequence.
Dadedzi Kenneth +2 more
doaj +1 more source
Trees with Distinguishing Index Equal Distinguishing Number Plus One
Discussiones Mathematicae Graph Theory, 2020 The distinguishing number (index) D(G) (D′ (G)) of a graph G is the least integer d such that G has an vertex (edge) labeling with d labels that is preserved only by the trivial automorphism.
Alikhani Saeid +3 more
doaj +1 more source
Vojnotehnički Glasnik, 2015 Antropogeni i tehnogeni uticaj na životnu sredinu pojačan je u poslednjoj deceniji XX veka. Taj trend se nastavlja i u XXI veku, a ofanziva globalizacije donosi nove ekološke probleme. Globalni ekološki problemi najviše pogađaju gradove.
Miloš Z. Petrović +2 more
doaj +1 more source
Singing Trees. Note su Tōru Takemitsu
Rivista di Estetica, 2022 The article examines the relationship between Western and Eastern aesthetics, analyzing some aspects of the musical production of Tōru Takemitsu, the great Japanese composer, now firmly included in the contemporary music “Western Canon”.
Pier Alberto, Porceddu Cilione
doaj +1 more source
Colourings of (k-r,k)-trees [PDF]
Opuscula Mathematica, 2017 Trees are generalized to a special kind of higher dimensional complexes known as \((j,k)\)-trees ([L. W. Beineke, R. E. Pippert, On the structure of \((m,n)\)-trees, Proc. 8th S-E Conf. Combinatorics, Graph Theory and Computing, 1977, 75-80]), and which
M. Borowiecki, H. P. Patil
doaj +1 more source
Tree Rings and Forest Mensuration: How Can They Document Trends in Forest Health and Productivity?
, 1986 A workshop sponsored by the National Council of the Paper Industry for Air and Stream Improvement (NCASI) and the National Vegetation Survey - EPA/USFS Forest Response Program.
University of Arizona. Laboratory of Tree-Ring Research.
core +5 more sources
The Turán Number of the Graph 2P5
Discussiones Mathematicae Graph Theory, 2016 We give the Turán number ex (n, 2P5) for all positive integers n, improving one of the results of Bushaw and Kettle [Turán numbers of multiple paths and equibipartite forests, Combininatorics, Probability and Computing, 20 (2011) 837-853].
Bielak Halina, Kieliszek Sebastian
doaj +1 more source
Quasi-Tree Graphs With Extremal General Multiplicative Zagreb Indices
IEEE Access, 2020 Zagreb indices and their modified versions of a molecular graph are important molecular descriptors which can be applied in characterizing the structural properties of organic compounds from different aspects. In this article, by exploring the structures
Jianwei Du, Xiaoling Sun
doaj +1 more source
Computing the Scale of an Endomorphism of a totally Disconnected Locally Compact Group
Axioms, 2017 The scale of an endomorphism of a totally disconnected, locally compact group G is defined and an example is presented which shows that the scale function is not always continuous with respect to the Braconnier topology on the automorphism group of G ...
George A. Willis
doaj +1 more source
‘The Beckoning Obstruction’: On the theme of scarcity in the poetry of Peter Larkin
Journal of British and Irish Innovative Poetry, 2020 Although he writes almost exclusively about trees and one of his main themes is scarcity, Peter Larkin should not be considered only an ecological nature poet.
John Milbank
doaj +2 more sources