JP Journal of Algebra, Number Theory and Applications

The JP Journal of Algebra, Number Theory and Applications is a prestigious international journal indexed in the Emerging Sources Citation Index (ESCI). It publishes original research papers, both theoretical and applied in nature, in various branches of algebra and number theory. The journal also welcomes survey articles that contribute to the advancement of these fields.

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HEYTING ALGEBRA IN FLAT ORIGAMI

Authors

  • Yiyang Jia
  • Jun Mitani

Keywords:

Heyting algebra, origami, flat-fold

DOI:

https://doi.org/10.17654/0972555524023

Abstract

This study utilizes category theory to enhance the understanding of flat-fold origami, focusing on the structural characteristics and representation of self-intersections within categorical definitions. We introduce the category of flat states $\mathscr{C}$ and its skeleton category [ $\mathscr{C}]$, based on permutation equivalence. We explored the localized subcategories $\mathscr{C}_P$ and $[\mathscr{C}]_P$ besides establishing a Heyting algebra structure on $[\mathscr{C}]_P$, proved its lack of a locale structure, confirming that $[\mathscr{C}]_P$ functions as a $(0,1)$-topos but does not qualify as a Grothendieck topos. These findings categorize the domain of flat-fold origami as a category of $(0,1)$-topoi, offering significant theoretical insights for analyzing flat-fold origami.

Received: May 28, 2024
Accepted: July 3, 2024

References

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M. Bern and B. Hayes, The complexity of flat origami, Ann. ACM-SIAM Symposium on Discrete Algorithms, ACM, 1996, pp. 175-183.

Thomas Hull, The combinatorics of flat folds: a survey, Origami3: Proceedings of the 3rd International Meeting of Origami Science, Math, and Education, 2002, pp. 29-38.

Yiyang Jia and Jun Mitani, Order theory in strip folding, JP Journal of Algebra, Number Theory and Applications 62(1) (2023), 13-34.

Yiyang Jia, Jun Mitani and Ryuhei Uehara, Efficient algorithm for map folding with a box-pleated crease pattern, Journal of Information Processing 28 (2020), 806-815.

R. I. Nishat, Map folding, Master Thesis, University of Victoria, 2013.

Ryuhei Uehara, Stamp foldings with a given mountain-valley assignment, Origami5: Proceedings of the 5th International Meeting of Origami Science, Mathematics and Education (AK Peters/CRC Press, 2011), 2011, pp. 585-597.

Published

2024-07-10

Issue

Section

Articles

How to Cite

HEYTING ALGEBRA IN FLAT ORIGAMI. (2024). JP Journal of Algebra, Number Theory and Applications, 63(5), 383-396. https://doi.org/10.17654/0972555524023

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