Haiku hokku's poetic value. One of the first advocates of English-language hokku was the Japanese poet Yone Noguchi. In "A Proposal to American Poets," published in the "Reader" magazine in February 1904, Noguchi gave a brief outline of the hokku and some of his own English efforts, ending with the exhortation, "Pray, you try Japanese Hokku, my American poets!" At about the same time the poet Sadakichi Hartmann was publishing original English-language hokku, as well as other Japanese forms in both English and French. In France, haiku was introduced by Paul-Louis Couchoud around 1906. Couchoud's articles were read by early Imagist
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