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A NOTE ON A COMPLETE SOLUTION OF A PROBLEM POSED BY K. MAHLER

Published online by Cambridge University Press:  03 May 2018

DIEGO MARQUES*
Affiliation:
Departamento de Matemática, Universidade de Brasília, Brasília, DF, Brazil email diego@mat.unb.br
CARLOS GUSTAVO MOREIRA
Affiliation:
Instituto de Matemática Pura e Aplicada, Rio de Janeiro, RJ, Brazil email gugu@impa.br
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Abstract

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Let $\unicode[STIX]{x1D70C}\in (0,\infty ]$ be a real number. In this short note, we extend a recent result of Marques and Ramirez [‘On exceptional sets: the solution of a problem posed by K. Mahler’, Bull. Aust. Math. Soc.94 (2016), 15–19] by proving that any subset of $\overline{\mathbb{Q}}\cap B(0,\unicode[STIX]{x1D70C})$, which is closed under complex conjugation and contains $0$, is the exceptional set of uncountably many analytic transcendental functions with rational coefficients and radius of convergence $\unicode[STIX]{x1D70C}$. This solves the question posed by K. Mahler completely.

Type
Research Article
Copyright
© 2018 Australian Mathematical Publishing Association Inc. 

Footnotes

The authors were supported by CNPq-Brazil.

References

Mahler, K., ‘Arithmetic properties of lacunary power series with integral coefficients’, J. Aust. Math. Soc. 5 (1965), 5664.CrossRefGoogle Scholar
Mahler, K., Lectures on Transcendental Numbers, Lecture Notes in Mathematics, 546 (Springer, Berlin, 1976).Google Scholar
Marques, D. and Ramirez, J., ‘On exceptional sets: the solution of a problem posed by K. Mahler’, Bull. Aust. Math. Soc. 94 (2016), 1519.Google Scholar
Waldschmidt, M., ‘Algebraic values of analytic functions’, J. Comput. Appl. Math. 160 (2003), 323333.CrossRefGoogle Scholar