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(1E,3E,5E,7E)-4,4′-(Octa-1,3,5,7-tetraene-1,8-diyl)dipyridine
Acta Crystallographica Section E, 2010 The title compound, C18H16N2, crystallizes with one and a half independent molecules in the asymmetric unit, with the half-molecule being completed by crystallographic inversion symmetry. Both independent molecules are almost planar, with the non-H atoms
K. Travis Holman +3 more
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Closed derivation on the unit square [PDF]
Bulletin of the Australian Mathematical Society, 1986 In this paper we extend Kurose's structure theorem to characterize a closed derivation in the algebra of continuous functions on the unit square, under the conditions that the range is the whole algebra and the kernel is the set of all functions depend only on the second variable, as a partial derivative with respect to signed measures on the unit ...
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Translative covering by unit squares
, 2013 Some results concerning translative coverings of squares and triangles by two, three and four unit squares are presented.
Janusz Januszewski
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Minimal Tilings of a Unit Square [PDF]
The College Mathematics Journal, 2017 Tile the unit square with $n$ small squares. We determine the minimum of the sum of the side lengths of the $n$ small squares, where the minimum is taken over all tilings of the unit square with $n$ squares.
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ON-LINE COVERING THE UNIT SQUARE BY SQUARES AND THE THREE-DIMENSIONAL UNIT CUBE BY CUBES
Demonstratio Mathematica, 1995 Among others the following results are proved: The unit square can be on-line covered by every sequence of squares of the total area at least \(7/4 \cdot {\root 3 \of {9}} + 13/8 \cong 5.265\). The cube \(I^3\) permits an on-line covering by every sequence of three- dimensional cubes of the total volume at least \(143/32 + 3/8 \cdot (9/2)^{3/4} + 63/8 \
Januszewski, Janusz, Lassak, Marek
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Asymptotic inference for nearly unstable AR(p) processes
, 1999 In this paper nearly unstable AR( p) processes (in other words, models with characteristic roots near the unit circle) are studied. Our main aim is to describe the asymptotic behavior of the least-squares estimators of the coefficients.
van Zuijlen, Martien C. A. +2 more
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3-Oxo-3-(piperidin-1-yl)propanenitrile
Acta Crystallographica Section E, 2012 In the title compound, C8H12N2O, the piperidine ring exhibits a chair conformation and its least-squares plane (all atoms) makes a dihedral angle of 32.88 (12)° with the propanenitrile unit (r.m.s. deviation = 0.001 Å
Hoong-Kun Fun +3 more
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Geodesy and Geodynamics, 2020 The elements of Green function matrix are the nonlinear functions of fault parameters estimation, the randomness of fault parameters estimation causes that the slip distribution inversion turns to be the parameter estimation problem of total least ...
Leyang Wang +3 more
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Analysis of kidney patients and pump failure data using a new unit interval distribution
Alexandria Engineering JournalA new one-parameter unit model is developed and investigated. The new model is known as the unit moment exponential distribution. Some essential mathematical characteristics of the distribution are determined.
Tariq S. Alshammari, Khudhayr A. Rashedi
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An unconditional maximum likelihood test for a unit root [PDF]
, 1993 We investigate a test for unit roots in autoregressive time series based on maximization of the unconditional likelihood. This is the likelihood function appropriate for stationary time series.
González-Farias, Graciela +1 more
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