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arXiv · 1810.07025

Comparison of the first positive Neumann eigenvalues for rectangles and special parallelograms

Arseny Raiko
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Abstract

First non-zero Neumann eigenvalues of a rectangle and a parallelogram with the same base and area are compared in case when the height of the parallelogram is greater than the base. This result is applied to compare first non-zero Neumann eigenvalue normalized by the square of the perimeter on the parallelograms with a geometrical restriction and the square. The result is inspired by Wallace--Bolyai--Gerwien theorem. An interesting three-dimensional problem related to this theorem is proposed.

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Arseny Raiko. 2018-10-14. Comparison of the first positive Neumann eigenvalues for rectangles and special parallelograms. https://arxiv.org/abs/1810.07025

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