A New Development of the Classical Single Ladder Problem via Converting the Ladder to a Staircase

Ralph Høibakk, Dag Lukkassen, Annette Meidell and Lars-Erik Persson
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Ralph Høibakk: Department of Computer Science and Computational Engineering, UiT The Arctic University of Norway, 8514 Narvik, Norway
Dag Lukkassen: Department of Computer Science and Computational Engineering, UiT The Arctic University of Norway, 8514 Narvik, Norway
Annette Meidell: Department of Computer Science and Computational Engineering, UiT The Arctic University of Norway, 8514 Narvik, Norway
Lars-Erik Persson: Department of Computer Science and Computational Engineering, UiT The Arctic University of Norway, 8514 Narvik, Norway

Mathematics, 2021, vol. 9, issue 4, 1-18

Abstract: Our purpose is to shed some new light on problems arising from a study of the classical Single Ladder Problem (SLP). The basic idea is to convert the SLP to a corresponding Single Staircase Problem. The main result (Theorem 1) shows that this idea works fine and new results can be obtained by just calculating rational solutions of an algebraic equation. Some examples of such concrete calculations are given and examples of new results are also given. In particular, we derive a number of integer SLPs with congruent ladders, where a set of rectangular boxes with integer sides constitutes a staircase along a common ladder. Finally, the case with a regular staircase along a given ladder is investigated and illustrated with concrete examples.

Keywords: single ladder problem (SLP); integer parametric solutions; single staircase problem; quartic equations; algebraic equations; recreational mathematics (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2021
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