منابع مشابه
The Garden of Earthly Delights
The Garden of Earthly Delights, Oil-on-wood triptych, 220 x 389 cm. Museo del Prado The Garden of Earthly Delights is a triptych painted by the early Netherlandish master Hieronymus Bosch (c. 1450–1516), housed in the Museo del Prado in Madrid since 1939. Dating from between 1490 and 1510, when Bosch was about 40 or 50 years old,[1] it is his best-known[2] and most ambitious work.[3] The master...
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Present fuel prices trigger a renewed interest in the energy debate. The paper extends the debate beyond the present boundaries with a descriptive model that maps two parallel processes on earth: (1) the stocks & flows of energy, developing between the earth’s main energy source: the sun, and its main energy sink: outer space, and (2) the accumulation of a collective memory on earth in the form...
متن کاملComparing Powers and Symbolic Powers of Ideals
We develop tools to study the problem of containment of symbolic powers I(m) in powers I for a homogeneous ideal I in a polynomial ring k[P ] in N + 1 variables over an arbitrary algebraically closed field k. We obtain results on the structure of the set of pairs (r, m) such that I(m) ⊆ I. As corollaries, we show that I2 contains I(3) whenever S is a finite generic set of points in P2 (thereby ...
متن کاملPowers of Two Modulo Powers of Three
Since 2 is a primitive root of 3 for each positive integer m, the set of points {(n, 2 mod 3) : n > 0}, viewed as a subset of Z>0×Z>0 is bi-periodic, with minimal periods φ(3) (horizontally) and 3 (vertically). We show that if one considers the classes of n modulo 6, one obtains a finer structural classification. This result is presented within the context of the question of strong normality of...
متن کاملDomination number of graph fractional powers
For any $k in mathbb{N}$, the $k$-subdivision of graph $G$ is a simple graph $G^{frac{1}{k}}$, which is constructed by replacing each edge of $G$ with a path of length $k$. In [Moharram N. Iradmusa, On colorings of graph fractional powers, Discrete Math., (310) 2010, No. 10-11, 1551-1556] the $m$th power of the $n$-subdivision of $G$ has been introduced as a fractional power of $G$, denoted by ...
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ژورنال
عنوان ژورنال: Nature Physics
سال: 2015
ISSN: 1745-2473,1745-2481
DOI: 10.1038/nphys3466