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arXiv · 2205.06030

Order-Degree-Height Surfaces for Linear Operators

Hui Huang·Manuel Kauers·Gargi Mukherjee
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Abstract

It is known for linear operators with polynomial coefficients annihilating a given D-finite function that there is a trade-off between order and degree. Raising the order may give room for lowering the degree. The relationship between order and degree is typically described by a hyperbola known as the order-degree curve. In this paper, we add the height into the picture, i.e., a measure for the size of the coefficients in the polynomial coefficients. For certain situations, we derive relationships between order, degree, and height that can be viewed as order-degree-height surfaces.

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Hui Huang, Manuel Kauers, Gargi Mukherjee. 2022-05-12. Order-Degree-Height Surfaces for Linear Operators. https://arxiv.org/abs/2205.06030

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