In this paper we give an explicit construction of bounded remainder sets of all possible volumes, for any irrational rotation on the adelic torus A/Q. Our construction involves ideas from dynamical systems and harmonic analysis on the adeles, as well as a geometric argument which originated in the study of deformation properties of mathematical quasicrystals.
The equilibrium tide-generating forces in the lunar orbital plane of a planet
of radius R are calculated for the case of N moons of mass M_i orbiting the
planet at instantaneous polar coordinates (D_i, \alpha_i). For the case of a
single moon, there are only two high tides. For the case of two moons, it is
found that there can exist a critical lunar orbital distance at which two high
tides become unstable with respect to formation of three high tides.
Bifurcation diagrams are presented which depict how the angular positions of
the high and low tides on the planet vary with the lunar distances and lunar
separation angle. Tidal stability diagrams, which illustrate the stability
regions for various tidal patterns as a function of lunar distances and lunar
separation angle, are presented for various values of D_2/D_1 and M_2/M_1.
Generally speaking, the aforementioned tidal instability, and hence the
propensity for formation of three high tides on a two-moon planet, exists over
a significant range of lunar distances and separation angles provided that
M_2/M_1 \sim (D_2/D_1)^3. For the case of N>2 moons, the tidal stability
diagram becomes more complex, revealing a diversity of potential tidal
patterns.Comment: 26 pages, 9 figure
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