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AuthorWaldschmidt, Michel. author
TitleDiophantine Approximation on Linear Algebraic Groups [electronic resource] : Transcendence Properties of the Exponential Function in Several Variables / by Michel Waldschmidt
ImprintBerlin, Heidelberg : Springer Berlin Heidelberg : Imprint: Springer, 2000
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Descript XXIII, 633 p. online resource


The theory of transcendental numbers is closely related to the study of diophantine approximation. This book deals with values of the usual exponential function eẑ. A central open problem is the conjecture on algebraic independence of logarithms of algebraic numbers. This book includes proofs of the main basic results (theorems of Hermite-Lindemann, Gelfond-Schneider, 6 exponentials theorem), an introduction to height functions with a discussion of Lehmer's problem, several proofs of Baker's theorem as well as explicit measures of linear independence of logarithms. An original feature is that proofs make systematic use of Laurent's interpolation determinants. The most general result is the so-called Theorem of the Linear Subgroup, an effective version of which is also included. It yields new results of simultaneous approximation and of algebraic independence. 2 chapters written by D. Roy provide complete and at the same time simplified proofs of zero estimates (due to P. Philippon) on linear algebraic groups


1. Introduction and Historical Survey -- 2. Transcendence Proofs in One Variable -- 3. Heights of Algebraic Numbers -- 4. The Criterion of Schneider-Lang -- 5. Zero Estimate, by Damien Roy -- 6. Linear Independence of Logarithms of Algebraic Numbers -- 7. Homogeneous Measures of Linear Independence -- 8. Multiplicity Estimates, by Damien Roy -- 9. Refined Measures -- 10. On Bakerโ{128}{153}s Method -- 11. Points Whose Coordinates are Logarithms of Algebraic Numbers -- 12. Lower Bounds for the Rank of Matrices -- 13. A Quantitative Version of the Linear Subgroup Theorem -- 14. Applications to Diophantine Approximation -- 15. Algebraic Independence -- References

Mathematics Algebra Algebraic geometry Group theory Number theory Mathematics Algebra Number Theory Algebraic Geometry Group Theory and Generalizations


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