Results 51 to 60 of about 175 (143)

Cubic diophantine inequalities for split forms [PDF]

open access: yesMonatshefte für Mathematik, 2014
Denote by $s_0^{(r)}$ the least integer such that if $s \ge s_0^{(r)}$, and $F$ is a cubic form with real coefficients in $s$ variables that splits into $r$ parts, then $F$ takes arbitrarily small values at nonzero integral points. We bound $s_0^{(r)}$ for $r \le 6$.
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Transference inequalities for multiplicative diophantine exponents [PDF]

open access: yesProceedings of the Steklov Institute of Mathematics, 2011
In this paper we prove inequalities for multiplicative analogues of Diophantine exponents, similar to the ones known in the classical case. Particularly, we show that a matrix is badly approximable if and only if its transpose is badly approximable and establish some inequalities connecting multiplicative exponents with ordinary ones.
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A system of two Diophantine inequalities with primes

open access: yesRAIRO - Theoretical Informatics and Applications
Let k ≥ 7 be fixed, and v = (55 k + 556)/(26 k + 672),1 < d < c <
Yanjun Dong, Qian Wang
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Additive Diophantine inequalities with mixed powers II

open access: yesMathematika, 1987
Let \(1\leq k_ 1\leq k_ 2...\leq k_ s\) be integers. The author considers the following, so-called inequality problem for \(k_ 1,...,k_ s:\) is it true, that for every s-tuple of non-zero real numbers \((\lambda_ 1,...,\lambda_ s)\) such that at least one quotient \(\lambda_ i/\lambda_ j\) is irrational, the values assumed by \(\sum^{s}_{i=1}\lambda_ ...
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Diophantine inequalities with mixed powers, II

open access: yesJournal of Number Theory, 1979
AbstractIt is shown that if λ1, …, λ5 are non-zero real numbers, not all of the same sign, and at least one of the ratios λiλj (1 ≤ j ≤ 3) is irrational then the values taken by λ1x12 + λ2x22 + λ3x32 + λ4x43 + λ5x53 for integer values of x1, …, x5 are everywhere dense on the real line.
openaire   +1 more source

On prime powers in linear recurrence sequences. [PDF]

open access: yesAnn Math Quebec, 2023
Odjoumani J, Ziegler V.
europepmc   +1 more source

Mixing Rates of the Geometrical Neutral Lorenz Model. [PDF]

open access: yesJ Stat Phys, 2023
Bruin H, Canales Farías HH.
europepmc   +1 more source

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