前川定理(Maekawa's theorem)是一個摺紙幾何學定理,以日本折紙學會評議員長前川淳之名命名。前川定理指出,平面摺紙的每個頂點,峰線數和谷線數在任意方向上都差2。[1]Jacques Justin [2]以及更早的S. Murata 也發現了同樣的摺紙公理。[3]
註釋
- ^ Kasahara, K.; Takahama, T., Origami for the Connoisseur, New York: Japan Publications, 1987 .
- ^ Justin, J., Mathematics of origami, part 9, British Origami, June 1986: 28–30 .
- ^ Murata, S., The theory of paper sculpture, II, Bulletin of Junior College of Art, 1966, 5: 29–37 (日語) .