Jun | Maekawa New!

An intermodal transport node that reconnects a previously divided riverfront. The structure features:

Jun Maekawa’s impact is evident in the next generation of origami artists and mathematicians. His theorem is taught in discrete geometry courses, his models are folded worldwide, and his books serve as bridges for mathematically inclined learners entering the art. He remains active in the Japanese Origami Academic Society (JOAS) and continues to lecture on the unity of paper, geometry, and code.

| Initiative | Timeline | Goal | |------------|----------|------| | (pilot in Okinawa) | 2027 | Develop modular housing that integrates seaweed farms for carbon capture and food production. | | Carbon‑Negative Campus (collaboration with Stanford University) | 2028 | Create a campus that sequesters more carbon than it emits over a 30‑year lifecycle. | | Open‑Source Toolkit (released to the public) | Q4 2026 | Provide architects worldwide with parametric design scripts for bio‑integrated façades, encouraging widespread adoption. | jun maekawa

Maekawa’s most significant contribution to origami mathematics is the theorem he co-discovered with French mathematician Jacques Justin. The addresses the properties of a vertex in a crease pattern:

Unlike masters like Akira Yoshizawa (who emphasized wet-folding and organic curves), Maekawa advocates for "rational origami"—where every crease has a logical, mathematical justification. An intermodal transport node that reconnects a previously

Beyond artistic modeling, Maekawa’s contributions to origami reflect a deeper understanding of the "origami theorem," which relates to the mathematics of folding—specifically how mountain and valley folds behave at a vertex. His work highlights the transition of origami from a traditional art form into a science of engineering, bridging the gap between artistic creation and structural design.

Expressed mathematically:

If you’re an architect, developer, or simply someone curious about how our built environment can evolve, keep an eye on Jun’s upcoming projects. They could very well serve as the blueprint for the next generation of “living” cities.

This theorem is critical because it dictates what local fold patterns are physically possible. For example, if a vertex has four creases (a common occurrence), the only possible mountain-valley assignments that satisfy the theorem are 3 mountains/1 valley or 3 valleys/1 mountain. This simple rule prevents impossible folding configurations and is a foundational axiom used in computational origami and foldability algorithms. He remains active in the Japanese Origami Academic

Maekawa has written extensively for both the origami enthusiast and the mathematician. His books, such as Viva! Origami (in Japanese) and Genuine Origami (English translation, 2008), are distinctive because they include:

Jun Maekawa (born 1958) is a pioneering Japanese origami artist, mathematician, and software engineer who transformed modern paper folding from a traditional craft into a rigorous, mathematically-driven art form. He is widely credited with establishing the foundations of "technical origami" by integrating geometric principles and formal theorems into the design process. The Mathematical Foundation: Maekawa's Theorem