Abstract
A plane, passing through the center and orthogonal to a diagonal, slices a cube into two identical halves each having three triangles, three pentagons and a hexagon. If you label the ten vertices of a half-cube with numbers, then each face is said to receive an induced face label given by the sum of all vertices around it. Label the ten vertices of a half-cube with digits 0 through 9 so that the induced labels of the three triangles and the three pentagons constitute six consecutive multiples of a fixed number, or more generally six numbers in arithmetic progression.
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This paper is a product to satisfy the curiosity of my students. Thanks are due to Professor George Gopen who, through his books and workshops, taught me how to write in a reader-centric style.
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Communicated by B. Sury.
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Sarkar, J. Vertex labeling of a half-cube to induce face labels in arithmetic progression. Indian J Pure Appl Math 53, 593–608 (2022). https://doi.org/10.1007/s13226-021-00151-3
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DOI: https://doi.org/10.1007/s13226-021-00151-3