Abstract:Ueber Complexe, insbesondere Linien-mid Kugcl-Comph,xe, m i t A n w e n d u n g auf die Theorie p~n't.ielh,r l)ifll,rt.nJialGleichtmgen.Vol~ SopuuS lm,~' in ('t~ats'rtANXa.
I.Die rasche Entwickelung der Geometrie in tmserem .lahrhumlert ist bekannLlich innig mit philosophischen Betraehtungeu ilber alas Wesen der C a r t e s i s e h e n Geometric verkn{ipft, Betrachtungen. die in ihrer allgemeinsten Form yon Plfieker in seinen et.~t,,n Arbeiten auseinandergesetzt, woMeu sind. li'fir denjenigen, der in den tleis… Show more
“…Our proof is based on the construction of averaged metric in TOME 59 (2009), FASCICULE 3 Section 2, and on the description of conformal vector fields for Riemannian metrics due to [14,15,18,2,23,13,10,9,19].…”
Section: Resultsmentioning
confidence: 99%
“…n the description of conformal mappings for n = 3 is due to Liouville [15] and for n 3 to Lie [14], for recent expositions cf. for example [5,Thm.…”
We prove the Finsler analog of the conformal Lichnerowicz-Obata conjecture showing that a complete and essential conformal vector field on a non-Riemannian Finsler manifold is a homothetic vector field of a Minkowski metric.
“…Our proof is based on the construction of averaged metric in TOME 59 (2009), FASCICULE 3 Section 2, and on the description of conformal vector fields for Riemannian metrics due to [14,15,18,2,23,13,10,9,19].…”
Section: Resultsmentioning
confidence: 99%
“…n the description of conformal mappings for n = 3 is due to Liouville [15] and for n 3 to Lie [14], for recent expositions cf. for example [5,Thm.…”
We prove the Finsler analog of the conformal Lichnerowicz-Obata conjecture showing that a complete and essential conformal vector field on a non-Riemannian Finsler manifold is a homothetic vector field of a Minkowski metric.
“…Riemann spaces conformai to Vm. Let Vm be a real Riemann space whose coordinate manifold is of class(8) Cq and whose real metric tensor, defined over the manifold, is positive definite (9) and of class Cq~l with qW\\.…”
Section: Preliminary Mattersmentioning
confidence: 99%
“…We replace the conformai Riemann tensor in these equations by (16. 9) and (16.10) and then simplify using (11.14) and (14. Now if use is made of (12.12), (12.21) and (11.14), we find that If any Uihw) (,-"+1), <r^(''"'_l)(«»+i) occurring in any of the above equations is replaced by another which differs from it by an additive null solution, the equation remains unchanged and the additional tensors due to the presence of the null tensor must vanish.…”
Section: (-T)-|(zs) = -Aaßraijkgßii3mentioning
confidence: 99%
“…When we make use of the ~2 symmetry of {i|W2j these last equations become 9 (28.12) 2 { hh I hh I j} +-[Ghi2 {h I hj} -Ghh{ii\ hj} ] ~ 0.…”
Section: Subspaces In a Conformally Euclidean Space Rmmentioning
The historical developments of conformal transformations and symmetries are sketched: Their origin from stereographic projections of the globe, their blossoming in two dimensions within the field of analytic complex functions, the generic role of transformations by reciprocal radii in dimensions higher than two and their linearization in terms of polyspherical coordinates by Darboux, Weyl's attempt to extend General Relativity, the slow rise of finite dimensional conformal transformations in classical field theories and the problem of their interpretation, then since about 1970 the rapid spread of their acceptance for asymptotic and structural problems in quantum field theories and beyond, up to the current AdS/CFT conjecture. The occasion for the present article: hundred years ago Bateman and Cunningham discovered the form invariance of Maxwell's equations for electromagnetism with respect to conformal space‐time transformations.
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