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The Littlewood conjecture in Diophantine approximation claims that $inf_{q \geq 1} q \cdot ∥ q α ∥ \cdot ∥ q β ∥ = 0$ holds for all real numbers $α$ and $β$ , where $∥ \cdot ∥$ denotes the distance to the nearest integer. Its $p$ -adic analogue, formulated by de Mathan and Teulié in 2004, asserts that $inf_{q \geq 1} q \cdot ∥ q α ∥ \cdot {| q |}_{p} = 0$ holds for every real number $α$ and every prime number $p$ , where ${| \cdot |}_{p}$ denotes the $p$ -adic absolute value normalized by ${| p |}_{p} = p^{- 1}$ . We survey the known results on these conjectures and highlight recent developments.

Asymptotic behavior of the number of solutions for non-Archimedean Diophantine approximations

Hitoshi Nakada, Rie Natsui (2006)

Acta Arithmetica

Badly Approximable Formal Power Series.

T.W. Cusick (1971)

Monatshefte für Mathematik

Commutative algebraic groups and p-adic linear forms

Clemens Fuchs, Duc Hiep Pham (2015)

Acta Arithmetica

Let G be a commutative algebraic group defined over a number field K that is disjoint over K from $_{a}$ and satisfies the condition of semistability. Consider a linear form l on the Lie algebra of G with algebraic coefficients and an algebraic point u in a p-adic neighbourhood of the origin with the condition that l does not vanish at u. We give a lower bound for the p-adic absolute value of l(u) which depends up to an effectively computable constant only on the height of the linear form, the height...

Continued fractions of Laurent series with partial quotients from a given set

Alan G. B. Lauder (1999)

Acta Arithmetica

Contributions to Diophantine Approximation in Fields of Series.

Wolfgang M. Schmidt (1979)

Monatshefte für Mathematik

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