A note on the Lalescu sequence

The sequence$ a_n = \sqrt[n+1]{(n+1)!\, }-\sqrt[n]{n!\, } $is called the Lalescu sequence, after the Romanian mathematician Traian Lalescu (1882–1929). We prove that this sequence is monotonically decreasing.

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Publication Details

Journal
AIMS Mathematics
Published
2025-01-01
DOI
https://doi.org/10.3934/math.2025346
Primary Topic
Mathematical Approximation and Integration
Type
article
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article

A note on the Lalescu sequence

Carlo Mantegazza, Nicola Pio Melillo
AIMS Mathematics
Mathematical Approximation and Integration
article

A note on the Lalescu sequence

Carlo Mantegazza, Nicola Pio Melillo
article en

Abstract

The sequence$ a_n = \sqrt[n+1]{(n+1)!\, }-\sqrt[n]{n!\, } $is called the Lalescu sequence, after the Romanian mathematician Traian Lalescu (1882–1929). We prove that this sequence is monotonically decreasing.

AIMS MathematicsVol. 10(3)
Openalex Percentile: Top 90%
Mathematical Approximation and Integration
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A note on the Lalescu sequence — Carlo Mantegazza, Nicola Pio Melillo · AIMS Mathematics (2025) | TGRS Research Map | TGRS