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of 22
pro vyhledávání: '"Manfred Trümper"'
Autor:
Manfred Trümper
Publikováno v:
General Relativity and Gravitation. 53
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::394e9d6d7e93f702c845e3586f3c5ece
https://doi.org/10.1007/s10714-021-02861-9
https://doi.org/10.1007/s10714-021-02861-9
Autor:
Manfred Trümper
Publikováno v:
Chinese Journal of Mathematics. 2014:1-21
The Collatz (or 3m+1) problem is examined in terms of a free semigroup on which suitable diophantine and rational functions are defined. The elements of the semigroup, called T-words, comprise the information about the Collatz operations which relate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a0a288145f7897eebee126a7e8b527d
https://doi.org/10.1155/2014/756917
https://doi.org/10.1155/2014/756917
Autor:
Wolfgang Kundt, Manfred Trümper
Publikováno v:
General Relativity and Gravitation. 48
This is an English translation of a paper by Wolfgang Kundt and Manfred Trumper, first published in 1962 in the proceedings of the Academy of Sciences and Literature in Mainz (Germany). The original paper was the last of a five-part series of article
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::781672ee38cafe18322a09d96ac72c9e
https://doi.org/10.1007/s10714-015-2009-y
https://doi.org/10.1007/s10714-015-2009-y
Autor:
Manfred Trümper, Guy Stephan
Publikováno v:
Physical Review A. 28:2344-2362
We show that in a gas laser the inhomogeneity in the distribution of amplifying atoms and the transverse Gaussian distribution of the saturating electromagnetic field give rise to different lens effects which are generally opposite to each other and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f6c3018d7f15e5a3c4d328391e19126
https://doi.org/10.1103/physreva.28.2344
https://doi.org/10.1103/physreva.28.2344
Autor:
Manfred Trümper
Publikováno v:
General Relativity and Gravitation. 5:1-12
A relativistic, collisionless gas of gravitating particles all having the same proper mass (possibly equal to zero) is studied under the assumption that the oneparticle distribution function is locally ellipsoidal in momentum space with respect to so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4c901b53ac07ab7c3ffe56b9672a9ce
https://doi.org/10.1007/bf00758071
https://doi.org/10.1007/bf00758071
Autor:
Manfred Trümper
Publikováno v:
Annals of Physics. 149:203-233
Holonomic rheonomic systems having a finite number of degrees of freedom are considered in classical nonrelativistic mechanics. It is shown that the configuration spacetime manifold M of such a system can be furnished with a linear symmetric connecti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23dc4972b22bc98637261526157dd3d4
https://doi.org/10.1016/0003-4916(83)90305-6
https://doi.org/10.1016/0003-4916(83)90305-6
Autor:
Manfred Trümper, Wolfgang Kundt
Publikováno v:
Zeitschrift für Physik A Hadrons and nuclei. 192:419-422
We show that for a wide class of field equations the orbits of the isometry group defining axial symmetry and stationarity admit orthogonal 2-surfaces. The field equations covered by this result include those of a perfect fluid.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5daf832d0150a3baa2ccc2b6683a5c8
https://doi.org/10.1007/bf01325677
https://doi.org/10.1007/bf01325677
Autor:
Manfred Trümper
Publikováno v:
Zeitschrift f�r Physik. 173:422-427
This paper deals with exterior solutions of the field equations of Jordansx-theory. The Bianchi identities are set up and brought into a simple form. All solutions with vanishing conform tensor are determined. There are three classes of solutions cha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4351a9aae07e5dbcea35a384190782d
https://doi.org/10.1007/bf01380704
https://doi.org/10.1007/bf01380704
Autor:
Manfred Trümper
Publikováno v:
Journal of Mathematical Physics. 6:584-589
This paper contains an investigation of the algebraic structure and the analytic properties of a class of normal hyperbolic Riemannian 4‐spaces restricted by the following condition: There exists a timelike unit vector ua such that the Riemann tens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fad842a858db5e864e1cf2334f24d34
https://doi.org/10.1063/1.1704310
https://doi.org/10.1063/1.1704310
Autor:
Manfred Trümper
Publikováno v:
Zeitschrift f�r Physik. 168:55-60
Es wird gezeigt, das eine Wolke von Probeteilchen, die sich drehungsfrei und scherungsfrei in einem nichtentarteten Vakuumfeld bewegt, nicht expandieren kann.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b287730dffa7b66c10ed705b6fb5ea0
https://doi.org/10.1007/bf01418957
https://doi.org/10.1007/bf01418957