Results 21 to 30 of about 419,531 (350)

Monochromatic triangles in three-coloured graphs [PDF]

open access: yes, 2013
In 1959, Goodman [9] determined the minimum number of monochromatic triangles in a complete graph whose edge set is 2-coloured. Goodman (1985) [10] also raised the question of proving analogous results for complete graphs whose edge sets are coloured ...
Král', D.   +16 more
core   +1 more source

The Altitudes of a Triangle

open access: yesThe American Mathematical Monthly, 2023
A long-standing, unanswered question regarding Euclid's Elements concerns the absence of a theorem for the concurrence of the altitudes of a triangle, and the possible reasons for this omission. In the centuries following Euclid, a remarkable number of proofs have been put forward; this suggests a search for the most elementary and direct proof.
openaire   +2 more sources

The Effect of shape on Cellular Uptake of Gold Nanoparticles in the forms of Stars, Rods, and Triangles

open access: yesScientific Reports, 2017
Gold nanomaterials have attracted considerable interest as vehicles for intracellular drug delivery. In our study, we synthesized three different shapes of methylpolyethylene glycol coated-anisotropic gold nanoparticles: stars, rods, and triangles.
Xueping Xie   +4 more
semanticscholar   +1 more source

A Recipe for State-and-Effect Triangles [PDF]

open access: yesLog. Methods Comput. Sci., 2017
In the semantics of programming languages one can view programs as state transformers, or as predicate transformers. Recently the author has introduced state-and-effect triangles which capture this situation categorically, involving an adjunction between
B. Jacobs
semanticscholar   +1 more source

A note on the maximum number of triangles in a C5‐free graph [PDF]

open access: yesElectron. Notes Discret. Math., 2017
We prove that the maximum number of triangles in a C 5 ‐free graph on n vertices is at most 122(1+o(1))n3∕2 , improving an estimate of Alon and Shikhelman.
Beka Ergemlidze   +3 more
semanticscholar   +1 more source

CALL: A triangle of triangles

open access: yesThe EuroCALL Review, 2012
Institutional investment in technology and infrastructure for the provision of new online and self-access language learning opportunities is not always accompanied by the necessary changes in the practices of learners, practitioners and managers in higher education (Wertsch, 2002).
Montoro, Carlos, Hampel, Regine
openaire   +3 more sources

Canonical metrics on generalized Hartogs triangles

open access: yesComptes Rendus. Mathématique, 2022
This paper is concerned with the canonical metrics on generalized Hartogs triangles. As main contributions, we first show the existence of a Kähler–Einstein metric on generalized Hartogs triangles.
Bi, Enchao, Hou, Zelin
doaj   +1 more source

PENALARAN ANALOGI SISWA DALAM MENYELESAIKAN MASALAH LUAS DAN KELILING SEGITIGA DAN SEGIEMPAT

open access: yesJurnal Pendidikan: Teori, Penelitian, dan Pengembangan, 2016
Analogical reasoning is the process of drawing conclucions using similarity properties and relationship structure of known source problem to be applied to target problem. The goal of this research was to describe eight grade students analogical reasoning
Dyah Ayu Pramoda Wardhani   +2 more
doaj   +1 more source

Frustrated triangles

open access: yesDiscrete Mathematics, 2015
19 pages, 4 figures ...
Teeradej Kittipassorn, Gábor Mészáros
openaire   +3 more sources

Approximately Counting Triangles in Sublinear Time [PDF]

open access: yesIEEE Annual Symposium on Foundations of Computer Science, 2015
We consider the problem of estimating the number of triangles in a graph. This problem has been extensively studied in both theory and practice, but all existing algorithms read the entire graph.
T. Eden, Amit Levi, D. Ron, C. Seshadhri
semanticscholar   +1 more source

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