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Shorey, T. N.
- Linear Forms in the Logarithms of Algebraic Numbers with Small Coefficients I
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1 School of Mathematics, Tata Institute of Fundamental Research, Colaba, Bombay 400 005, IN
1 School of Mathematics, Tata Institute of Fundamental Research, Colaba, Bombay 400 005, IN
Source
The Journal of the Indian Mathematical Society, Vol 38, No 1-4 (1974), Pagination: 271-284Abstract
Ifav α1, α2, β1 are rational numbers satisfying (i) α1 > 0, α2 > 0 are multiplicatively independent (ii) the size of α1, α2, β1, respectively, do not exceed S1, S1 and (log S1)100 (100 is quite unimportant), then | β1 log α1 - log α2| > C(∈) exp ( - (log S1)2+z) (1) where ∈ > 0 is an arbitrary fixed constant and C(∈) is an effectively computable positive constant depending only on ∈.- Linear Forms in the Logarithms of Algebraic Numbers with Small Coefficients II
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Authors
Affiliations
1 School of Mathematics, Tata Institute of Fundamental Research, Colaba, Bombay 400 005, IN
1 School of Mathematics, Tata Institute of Fundamental Research, Colaba, Bombay 400 005, IN
Source
The Journal of the Indian Mathematical Society, Vol 38, No 1-4 (1974), Pagination: 285-292Abstract
The purpose of this note is to prove the following:
THEOREM 1. If α1, α2, α3, β1, β2 are rational numbers satisfying (i) α1 > 0, α2 > 0, α3 > 0 are multiplicatively independent (ii) the size of αi, ≤ S1, i = 1, 2, 3, and that of βi, ≤ (log S1)100 = S, i = 1, 2, (100 is quite unimportant), then
| β1 log α1 + β2 log α2 - log α3 | > C(∈) exp ( - (log 1)8+∈)
where ∈ > 0 is an arbitrary fixed constant and C(∈) is an effectively computable positive constant depending only on ∈.
- Ramanujan and Binary Recursive Sequences
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um=rum-1+sum-2, m=2,3,... (1).
Authors
Affiliations
1 Tata Institute of Fundamental Research, IN
1 Tata Institute of Fundamental Research, IN
Source
The Journal of the Indian Mathematical Society, Vol 52, No 1-2 (1987), Pagination: 147-157Abstract
Let r and s be integers satisfying s≠0 and r2+4s≠0. Let u0, u1 be integers and we defineum=rum-1+sum-2, m=2,3,... (1).