Seventeen Kinds of Wallpaper Patterns

We find such repeated patterns on wallpaper everywhere in our daily life. Have you considered how many kinds of repetitions there are for patterns on a plane? Do you think there are five or six kinds? No, there are seventeen! We can show this using the mathematics of group theory. The following tables show examples in traditional Japanese patterns:

(A) Without rotations.









(B) With rotations of 180 degrees. Without rotations of 90, 60 degrees.











(C) With rotations of 90 degrees.







(D) With rotations of 120 degrees. Without rotations of 60 degrees.







(E) With rotations of 60 degrees.





Above we have shown the mathematical symbols to distinguish the seventeen kinds of patterns and representative traditional Japanese patterns.

For long, I could not check an example of type p3 among traditional Japanese patterns. However, in the end of 2002, Professor Amiko Tone and Professor Sezo Kondo at Kyoto Furitsu University informed me that examples of type p3 among traditional Japanese patterns actually exist. I express thanks for both professors.

In this table we describe the Japanese nomenclature for the names of the patterns.
p1 Bingata gata = shape, Bingata = a generic name of traditional dyed patterns of the Okinawan Islands
pm Yakata-Mon Yakata = big house, Mon = pattern, Yakata-Mon = a symbol of the Ise Shrine
pg Hana-Usagi-Kinran Hana = flower, Usagi = rabbit, Kinran = the name of method of weaving with golden thread in the texture
cm Seikaiha Sei = blue, kai = ocean, ha = wave
p2 Ariso-Donsu Ariso = abbreviation of ara-iso, ara = wild, iso = rocky beach, Donsu = the name of method of weaving in texture
pmm Yoshiwara-Tsunagi Yoshiwara = the name of a downtown area in Edo, Tsunagi = connected objects, Edo = the former name of Tokyo
pgg Fundo-Tsunagi Fundo = weight for a balance, Tsunagi = connected objects
cmm Takeda-Bishi Takeda = the name of a daimio (feudal lord) in the 16th century, Bishi = rhombus
pmg Shikan-Jima Shikan = the name of a kabuki actor, Jima = stripes
p4 Rokuyata-Koshi Rokuyata = the name of a character in kabuki play, Koshi = lattice
p4m Sippo-Tsunagi Sippo = seven kinds of treasure, Tsunagi = connected objects
p4g Sayagata Saya = silk textile with beautiful patterns, gata = shape or pattern
p3 Onaga-Mitsudomoe O = tail, naga = long, Mitsu = three, Mitsudomoe = the name of a Japanese traditional crest repeated in the pattern
p31m Bisyamon-Kikko Bisyamon = the name of a Buddhist god, Kikko = carapace of a tortoise
p3m1 Kasane-Kikko-ni-Wa Kasane = repeated, Kikko = carapace of a tortoise, ni = and, Wa = ring
p6 Kagome Kago = basket, me = eye or hole
p6m Asanoha Asa = hemp, no = of, ha = leaf

The examples shown here of pmg and p4 are related to kabuki plays. The patterns were used not only on the costumes but were dyed on souvenir hand towels and distributed to fans. In particular, the name of Shikan-Jima demonstrating pmg has a double meaning as a joke. Shikan is the name of an actor. (Later he changed his name to Nakamura Utaemon. In Japan sometimes the same name is handed down in a family. Shikan is the second Nakamura Utaemon.) At the same time "shi" means "four" and "kan" means "ring" or "handle"; and "Jima", stirpes: as in the pattern of four stripes and the handle of a chest.

Kasane-Kikko-ni-Wa, the p3m1 example, was often used on noh costumes.

Let us give a more detailed mathematical explanation.

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