Haiku in languages other than Japanese the Arab haiku poets use the three short lines structure, this has not always been considered as a strict rule. Literary critics in the Arab world have not reached an agreement yet whether the haiku poems written by the young poets can be considered a new form of poetry or merely a different name for the (already popular) flash fiction. In July 2015, the "Poetry Letters Magazine" acknowledged the Arabic haiku as a distinct form of poetry by publishing, for the first time, haiku poems of 11 Arab poets from Syria, Morocco, Iraq, Jordan, and Tunisia. Haiku in languages other
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