On (Japanese prosody) On (Japanese prosody) The term On (rarely "Onji") refers to counting phonetic sounds in Japanese poetry. In the Japanese language, the word ""on"" (音) means "sound". It is used to mean the phonetic units counted in haiku, tanka, and other such poetic forms. Known as "morae" to English-speaking linguists, the modern Japanese term for the linguistic concept is either "haku" () or "mōra" (). Ji (字) is Japanese for "symbol" or "character". The concatenation of the two words ""on"" and ""ji"" into ""onji"" (音字) was used by Meiji era grammarians to mean "phonic character" and was translated into English by
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