Results 1 to 10 of about 230,953 (263)

Some chemical indices related to the number of triangles [PDF]

open access: yesTransactions on Combinatorics, 2023
Many chemical indices have been invented in theoretical chemistry, such as the Zagreb index, the Lanzhou index, the forgotten index, the Estrada index etc.
Mihrigul Wali
doaj   +1 more source

STUDENTS’ GEOMETRIC THINKING ON TRIANGLES: MUCH IMPROVEMENT IS NEEDED

open access: yesInfinity, 2021
A look into students’ misconceptions help explain the very low geometric thinking and may assist teachers in correcting errors to aid students in reaching a higher van Hiele geometric thinking level.
Joanne Ramirez Casanova   +2 more
doaj   +1 more source

THE CONCEPT OF THE «GREAT CASPIAN» IN THE GEOPOLITICAL CONTEXT

open access: yesСовременная наука и инновации, 2022
The Caspian issues are considered in various aspects by numerous domestic and foreign researchers. The region is gaining particular importance in connection with the signing of the Convention on the Legal Status of the Caspian Sea (dated 12.08.2018 ...
K. A. Markelov
doaj   +1 more source

Some Pascal’s like triangles [PDF]

open access: yesریاضی و جامعه, 2023
. In this article, we delve into the fascinating world of numerical triangles similar to Khayyam-Pascal triangle. Our focus is on triangles that are comprised of natural numbers.
Seyed Mohammad Amin Khatami   +1 more
doaj   +1 more source

PUBLISHING AND STUDYING OF A GROUP OF STIRRUPS PRESERVED IN THE GAYER-ANDERSON MUSEUM IN CAIRO WITH ITS COMPARISON WITH MODELS FROM PAINTINGS OF THE OTTOMAN MANUSCRIPTS [PDF]

open access: yesJournal of the General Union of Arab Archaeologists, 2017
( En ) This study highlighted a group of masterpieces which are known as “stirrups” preserved in the Gayer-Anderson Museum in Cairo. The study has clarified its function which it is the helping of the persons in riding the horse, and the horsemen’s ...
Amin Abd Allah Rashaidy
doaj   +1 more source

Strategic Triangles and Balancing in World Politics

open access: yesКонтуры глобальных трансформаций: политика, экономика, право, 2021
Trilateral diplomacy is a common format of interaction in international relations, which forms various configurations of the balance of power within the framework of triangles. The concept of a “triangle” is characterized by ambivalence, has a variety of
D. A. Degterev, M. S. Ramich
doaj   +1 more source

Pseudo-Heronian triangles whose squares of the lengths of one or two sides are prime numbers

open access: yesLietuvos Matematikos Rinkinys, 2021
The authors introduced the concept of a pseudo-Heron triangle, such that squares of sides are integers, and the area is an integer multiplied by $2$. The article investigates the case of pseudo-Heron triangles such that the squares of the two sides of ...
Edmundas Mazėtis   +1 more
doaj   +1 more source

Engaging Young Children with Mathematical Activities Involving Different Representations: Triangles, Patterns, and Counting Objects

open access: yesCenter for Educational Policy Studies Journal, 2018
This paper synthesises research from three separate studies, analysing how different representations of a mathematical concept may affect young children's engagement with mathematical activities.
Dina Tirosh   +3 more
doaj   +1 more source

Generalized monotone triangles [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2013
In a recent work, the combinatorial interpretation of the polynomial $\alpha (n; k_1,k_2,\ldots,k_n)$ counting the number of Monotone Triangles with bottom row $k_1 < k_2 < ⋯< k_n$ was extended to weakly decreasing sequences $k_1 ≥k_2 ≥⋯≥k_n$.
Lukas Riegler
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

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