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Journal ArticleDOI

Putting convex d -polytopes inside frames

Joseph Zaks
- 15 May 2018 - 
- Vol. 109, Iss: 2, pp 32
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TLDR
In this article, a construction of large neighborly and nearly-neighborly families of d-polytopes in rods was introduced, obtained by putting smaller such families in rods, to form suitable frames for a larger collection.
Abstract
We introduce a construction of large neighborly and nearly-neighborly families of d-polytopes in $$E^{d}$$ , obtained by putting smaller such families in rods, to form suitable frames for a larger collection. We use it to exhibit, among general results, a nearly-neighborly family, consisting of $$9\times 4^{d-2}$$ combinatorially d-boxes in $$E^{d}$$ , for every $$d \ge 3$$ (like 36 3-boxes in $$E^{3})$$ and a neighborly family of $$3\times 2^{d-1}$$ of prisms over d-simplices (like 12 triangular prisms in $$E^{3})$$ .

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Neighborly families in $$E^{d}$$ E d consisting of either d-pyramids over ( $$d-1$$ d - 1 )-cubes, or else of d-cubes

TL;DR: In this paper neighborly families with 16 or 24 3-cubes were exhibited. Butler and Srinivasan extended these results to neighborly family consisting of either (2, 3)-cubes or (3, 2-cubes) for all d, $$d\ge 3-feathers.
Journal ArticleDOI

Two neighborly families of 3-pyramids and of 3-boxes in \(E^{3}\)

TL;DR: In this article, the authors demonstrate a few applications of the operation of taking pyramids and prisms of convex polytopes and putting them in frames, in order to obtain large neighborly or nearly neighborly families of polytope families.
References
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Proofs from The BOOK

TL;DR: Aigner and Ziegler as discussed by the authors present proofs for a broad collection of theorems and their proofs that would undoubtedly be in the Book of Erds, including the spectral theorem from linear algebra, some more recent jewels like the Borromean rings and other surprises.
Book

Proofs from THE BOOK

TL;DR: This revised and enlarged fifth edition features four new chapters, which contain highly original and delightful proofs for classics such as the spectral theorem from linear algebra, some more recent jewels like the non-existence of the Borromean rings and other surprises.
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