Results 31 to 40 of about 419,531 (350)

A rational sine and cosine of the angles of a triangle

open access: yesLietuvos Matematikos Rinkinys, 2013
The article deals with triangles whose sines and cosines of the angles are the rational numbers. We prove that these triangles are similar to Pythagorean or Heronian triangles, and vice versa.
Edmundas Mazėtis   +1 more
doaj   +1 more source

A note on Smarandache number related triangles [PDF]

open access: yes, 2010
The pseudo Smarandache function, denoted by Z(n), has been introduced by ...
Majumdar, A.A.K., Gunarto , H.
core   +1 more source

Pink Triangles

open access: yesRadical Teacher, 2019
A documentary film on gay and lesbian history and experience is highly recommended for philosophy and other courses.
Cathy Hoffman, Diane Raymond
doaj   +1 more source

On some results concerning generalized arithmetic triangles [PDF]

open access: yes, 2018
In this paper we present theoretical and computational results regarding generalized arithmetic m-triangles. The numerical values recover well-known number sequences, indexed in the OEIS including binomial coefficients and their extensions.
Bagdasaryan, Armen G.   +3 more
core   +1 more source

Versions of Triangular Desire in Hungarian Literature: Reading Sándor Márai and Péter Nádas

open access: yesHungarian Cultural Studies, 2018
Two Hungarian authors, Sándor Márai and Péter Nádas, seem to have one thing in common: their attraction to triangular relationships. Written between 1935 and 1942 and portraying human relations in pre-World War II Hungary, Márai’s two novels and one ...
Enikő Bollobás
doaj   +1 more source

Exploratory Case Study on Solving Word Problems Involving Triangles by Pre-Service Mathematics Teachers in a Regional University in Australia

open access: yesMathematics, 2022
Studies have shown that solving real-world problems involving triangles is one of the most difficult topics for the pre-service secondary mathematics teachers engaging study and training in metropolitan institutions.
William Guo
doaj   +1 more source

Triangle Sparsifiers

open access: yesJournal of Graph Algorithms and Applications, 2011
Summary: In this work, we introduce the notion of triangle sparsifiers, i.e., sparse graphs which are approximately the same to the original graph with respect to the triangle count. This results in a practical triangle counting method with strong theoretical guarantees.
Charalampos E. Tsourakakis   +2 more
openaire   +2 more sources

Discrete Dimers of Redox-Active and Fluorescent Perylene Diimide-Based Rigid Isosceles Triangles in the Solid State.

open access: yesJournal of the American Chemical Society, 2018
The development of rigid covalent chiroptical organic materials, with multiple, readily available redox states, which exhibit high photoluminescence, is of particular importance in relation to both organic electronics and photonics. The chemically stable,
Siva Krishna Mohan Nalluri   +10 more
semanticscholar   +1 more source

How do We Know the Ancient Slavs also Knew Gnomons?

open access: yesStudia Mythologica Slavica, 2022
I will attempt to demonstrate that the ‘sacred triangles based on the solar angle’ hypothesis cannot be regarded as a serious scientific proposition because it seems uncorroborated by any solid evidence. It is more an example of circular reasoning, which
Tomislav Bilić
doaj   +1 more source

Triangles of the neck: a review with clinical/surgical applications

open access: yesAnatomy & Cell Biology, 2019
The neck is a geometric region that can be studied and operated using anatomical triangles. There are many triangles of the neck, which can be useful landmarks for the surgeon.
S. Kikuta   +3 more
semanticscholar   +1 more source

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