Results 11 to 20 of about 211,113 (260)

Menelaus's theorem for hyperbolic quadrilaterals in the Einstein relativistic velocity model of hyperbolic geometry [PDF]

open access: yes, 2010
Hyperbolic Geometry appeared in the first half of the 19th century as an attempt to understand Euclid's axiomatic basis of Geometry.
Barbu, Catalin
core   +1 more source

Non-Euclidean Geometry [PDF]

open access: yesNature, 1911
As many mathematicians give very little thought to the theory of sets, it is perhaps worth while dwelling for moment on Dr. Sommerville's possibly misleading remarks in NATURE of October 5. He, quite correctly, points out the one-one correspondence between the aggregates of integral numbers 1, 2, 3, &c. (n), and even numbers 2, 4, 6, &c. (2n). Thus the
  +5 more sources

Partialy Paradoxist Smarandache Geometries [PDF]

open access: yes, 1996
A paradoxist Smarandache geometry combines Euclidean, hyperbolic, and elliptic geometry into one space along with other non-Euclidean behaviors oflines that would seem to require a discrete space.
Iseri, Howard
core   +1 more source

Mathematical Proof and Discovery Reductio ad Absurdum

open access: yesInformal Logic, 2008
The uses and interpretation of reductio ad absurdum argumentation in mathematical proof and discovery are examined, illustrated with elementary and progressively sophisticated examples, and explained.
Dale Jacquette
doaj   +1 more source

The Renaissance Concept of Space: Notes on the Interaction between Arts and Sciences in History [PDF]

open access: yesActa Baltica Historiae et Philosophiae Scientiarum, 2015
“Renaissance concept of space” harbors surely some definite bonuses for anybody embarking on a study of the inventive role that philosophy has had, in its happiest moments of life, for human cognition.
Rein Undusk
doaj   +1 more source

Do mito da Geometria Euclidiana ao ensino das Geometrias Não Euclidianas

open access: yesVértices, 2010
Das tentativas frustradas de provar que o quinto postulado de Euclides era um teorema, surgiram as Geometrias Não Euclidianas. Com os quatro primeiros postulados de Euclides e a negação do quinto, surgiram outras Geometrias cujos postulados são possíveis
Mylane dos Santos Barreto   +1 more
doaj   +1 more source

On The Investigating Cycle Properties In The Galilean Plane G^2

open access: yesEurasian Journal of Science and Engineering, 2023
The introduction of the Galilean plane within the affine plane parallels the familiar concepts of the Euclidean plane, extending the realm of geometric exploration.
Abdullah Kurudirek
doaj   +1 more source

Sub-Finsler structures from the time-optimal control viewpoint for some nilpotent distributions [PDF]

open access: yes, 2015
In this paper we study the sub-Finsler geometry as a time-optimal control problem. In particular, we consider non-smooth and non-strictly convex sub-Finsler structures associated with the Heisenberg, Grushin, and Martinet distributions.
Barilari, Davide   +3 more
core   +3 more sources

Studying the status of fractal geometry in art and its appearance in artwork [PDF]

open access: yesپیکره, 2015
Euclid was one of the first who attempted to explain natural phenomena in terms of mathematical concepts. His efforts were called Euclidean geometry.
Mahtab Mobini, Nooshin Fatholahi
doaj   +1 more source

Non-Euclidean Geometry, Nontrivial Topology and Quantum Vacuum Effects

open access: yesUniverse, 2018
Space out of a topological defect of the Abrikosov–Nielsen–Olesen (ANO) vortex type is locally flat but non-Euclidean. If a spinor field is quantized in such a space, then a variety of quantum effects are induced in the vacuum.
Yurii A. Sitenko   +1 more
doaj   +1 more source

Home - About - Disclaimer - Privacy