By Abraham A. Ungar

This e-book offers a robust solution to research Einstein's specified idea of relativity and its underlying hyperbolic geometry during which analogies with classical effects shape the correct software. It introduces the concept of vectors into analytic hyperbolic geometry, the place they're referred to as gyrovectors.

Newtonian speed addition is the typical vector addition, that's either commutative and associative. The ensuing vector areas, in flip, shape the algebraic surroundings 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 push to gyrovector areas that shape the algebraic atmosphere for the PoincarÃ© ball version of hyperbolic geometry.

In complete analogy with classical effects, the booklet provides a singular relativistic interpretation of stellar aberration by way of relativistic gyrotrigonometry and gyrovector addition. additionally, the ebook provides, 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 method, focused on the relativistic middle 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 speeded up enlargement.

the invention of the relativistic heart of mass during this publication hence demonstrates once more the usefulness of the learn of Einstein's particular thought of relativity by way of 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; detailed concept of Relativity: The Analytic Hyperbolic Geometric point of view; Relativistic Gyrotrigonometry; Stellar and Particle Aberration.

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**Extra info for Analytic Hyperbolic Geometry and Albert Einstein's Special Theory of Relativity**

**Example text**

5 (subgroups). A subset H of a subgroup (G, +) is a subgroup of G if it is nonempty, and H is closed under group compositions and inverses in G, that is, x, y∈H implies x + y∈H and −x∈H. 6 (The Subgroup Criterion). A subset H of a group G is a subgroup if and only if (i) H is nonempty, and (ii) x, y ∈ H implies x − y∈H. For a proof of the Subgroup Criterion see, for instance, [Dummit and Foote (2004)]. A most natural, but hardly known, generalization of the group concept is the concept of the gyrogroup, the formal definition of which follows.

Proof. 25 (Left and Right Gyrotranslations). Let (G, ⊕) be a gyrogroup. 22, gyrotranslations are bijective. 72) Proof. 72). 26 we have the following theorem. 27 Let a, b be any two elements of a gyrogroup (G, +) and let A ∈ Aut(G) be an automorphism of G. Then gyr[a, b] = gyr[Aa, Ab] if and only if the automorphisms A and gyr[a, b] commute. Proof. 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.

Gyrovector spaces, in turn, algebraically regulate analytic hyperbolic geometry just as vector spaces regulate algebraically analytic Euclidean geometry. To elaborate a precise language we prefix a gyro to terms that describe concepts in Euclidean geometry to mean the analogous concepts in hyperbolic geometry. The prefix gyro stems from Thomas gyration which is, in turn, the mathematical abstraction of a special relativistic effect known as Thomas precession [Ungar (1996b); Ungar (1997); Ungar (2006d)].