By Abraham A. Ungar

This booklet offers a strong approach to examine Einstein's exact idea of relativity and its underlying hyperbolic geometry within which analogies with classical effects shape definitely the right instrument. It introduces the suggestion of vectors into analytic hyperbolic geometry, the place they're referred to as gyrovectors.

Newtonian pace addition is the typical vector addition, that is either commutative and associative. The ensuing vector areas, in flip, shape the algebraic atmosphere for a standard version of Euclidean geometry. In complete analogy, Einsteinian pace addition is a gyrovector addition, that's either gyrocommutative and gyroassociative. The ensuing gyrovector areas, in flip, shape the algebraic surroundings for the Beltrami Klein ball version of the hyperbolic geometry of Bolyai and Lobachevsky. equally, MÃ¶bius addition provides upward thrust to gyrovector areas that shape the algebraic surroundings for the PoincarÃ© ball version of hyperbolic geometry.

In complete analogy with classical effects, the publication offers a singular relativistic interpretation of stellar aberration when it comes to relativistic gyrotrigonometry and gyrovector addition. additionally, the publication offers, for the 1st time, the relativistic middle of mass of an remoted process of noninteracting debris that coincided at a few preliminary time t = zero. the unconventional relativistic resultant mass of the approach, targeted on the relativistic heart of mass, dictates the validity of the darkish topic and the darkish strength that have been brought through cosmologists as advert hoc postulates to provide an explanation for cosmological observations approximately lacking gravitational strength and late-time cosmic sped up growth.

the invention of the relativistic heart of mass during this ebook hence demonstrates once more the usefulness of the research of Einstein's specific idea of relativity when it comes to its underlying analytic hyperbolic geometry.

Contents: Gyrogroups; Gyrocommutative Gyrogroups; Gyrogroup Extension; Gyrovectors and Cogyrovectors; Gyrovector areas; Rudiments of Differential Geometry; Gyrotrigonometry; Bloch Gyrovector of Quantum info and Computation; precise thought of Relativity: The Analytic Hyperbolic Geometric point of view; Relativistic Gyrotrigonometry; Stellar and Particle Aberration.

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**Example text**

26 the automorphisms gyr[a, b] and A commute. 26 gyr[Aa, Ab] = Agyr[a, b]A−1 = gyr[a, b]. 28. 28 A gyrogroup (G, ⊕) and its associated cogyrogroup (G, ) possess the same automorphism group, Aut(G, ) = Aut(G, ⊕) Proof. 75) Let τ ∈ Aut(G, ⊕). 77) Conversely, let τ ∈ Aut(G, ). 14. 6 The Gyrosemidirect Product Group The gyrosemidirect product is a natural generalization of the notion of the semidirect product of group theory. The gyrosemidirect product structure was first observed in the Lorentz transformation group [Ungar (1991c); Friedman and Ungar (1994)], suggesting the following formal definition.

128) gyr[gyr[a, −b]b, a] = gyr[a, −b] for all a, b ∈ G. Proof. 131) for all a, b ∈ G. 126). 126). 127). 128) is equivalent to the first one. 128) follows from the first (third) by replacing a by −a (or, alternatively, by replacing b by −b). January 14, 2008 9:33 WSPC/Book Trim Size for 9in x 6in 42 ws-book9x6 Analytic Hyperbolic Geometry We are now in a position to find that the left gyroassociative law and the left loop property of gyrogroups have right counterparts. 35 have Let (G, ⊕) be a gyrogroup.

This discovery of the relationship between “Bloch vector” and the Poincar´e model of hyperbolic geometry led P´eter L´evay to realize in [L´evay (2004a)] and [L´evay (2004b)] that the so called Bures metric in quantum computation is equivalent to the metric that results from the hyperbolic distance function. Like M¨ obius addition, Einstein velocity addition is neither commutative nor associative. Hence, the study of special relativity in the literature follows the lines laid down by Minkowski, in which the role of Einstein velocity addition and its interpretation in the hyperbolic geometry of Bolyai and Lobachevsky are ignored [Barrett (1998)].