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Cyclic Maximal Ideals of Rings of Differential Operators over Power Series Rings
(TAYLOR & FRANCIS INC, 2010)
In [3], Bratti and Takagi conjectured that a first order differential operator S=11 +...+ nn+ with 1,..., n, {x1,..., xn} does not generate a cyclic maximal left (or right) ideal of the ring of differential operators. This ...
The brightening of Saturn's F ring
(Academic Press Inc. Elsevier B.V., 2012-05-01)
Image photometry reveals that the F ring is approximately twice as bright during the Cassini tour as it was during the Voyager flybys of 1980 and 1981. It is also three times as wide and has a higher integrated optical ...
The brightening of Saturn's F ring
(Academic Press Inc. Elsevier B.V., 2012-05-01)
Image photometry reveals that the F ring is approximately twice as bright during the Cassini tour as it was during the Voyager flybys of 1980 and 1981. It is also three times as wide and has a higher integrated optical ...
Analysing the region of the rings and small satellites of Neptune
(2020-01-01)
The ring system and small satellites of Neptune were discovered during Voyager 2 flyby in 1989 (Smith et al. in Science 246:1422, 1989). In this work we analyse the diffusion maps which can give an overview of the system. ...
Some comments on the F ring-Prometheus-Pandora environment
(Elsevier B.V., 2004-01-01)
The system formed by the F ring and two close satellites, Prometheus and Pandora, has been analysed since the time that Voyager visited the planet Saturn. During the ring plane crossing in 1995 the satellites were found ...
Some comments on the F ring-Prometheus-Pandora environment
(Elsevier B.V., 2004-01-01)
The system formed by the F ring and two close satellites, Prometheus and Pandora, has been analysed since the time that Voyager visited the planet Saturn. During the ring plane crossing in 1995 the satellites were found ...
The isomorphism problem for graph magma algebras
(One-value) graph magma algebras are algebras having a basis B = V boolean OR {1} such that, for all u,v is an element of V, uv is an element of {u,0}. Such bases induce graphs and, conversely, certain types of graphs ...
Simple potential-density pairs for flat rings Simple potential-density pairs for flat rings
(Blackwell PublishingOxfordInglaterra, 2007)
Motion around a monopole plus ring system - I. Stability of equatorial circular orbits versus regularity of three-dimensional motion
(Wiley-blackwellMaldenEUA, 2011)