Haiku the 17 "on" of a traditional Japanese haiku. Because the normal modes of English poetry depend on accentual meter rather than on syllabics, Henderson chose to emphasize the order of events and images in the originals. Nevertheless, many of Henderson's translations were in the five-seven-five pattern. The first haiku written in English was arguably by Ezra Pound, "In a Station of the Metro", published in 1913. Since then, the haiku has become a fairly popular form among English-speaking poets. English haiku can follow the traditional Japanese rules, but are frequently less strict, particularly concerning the number of syllables and subject
Invariant of a binary form for the ring of covariants. showed that the ring of invariants of a degree 8 form is generated by 9 invariants of degrees 2, 3, 4, 5, 6, 7, 8, 9, 10, and the ring of covariants is generated by 69 covariants. August von Gall () and confirmed the generators for the ring of invariants and showed that the ideal of relations between them is generated by elements of degrees 16, 17, 18, 19, 20. showed that the algebra of invariants of a degree 9 form is generated by 92 invariants. Cröni, Hagedorn, and Brouwer computed 476 covariants, and Lercier