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math.KT2020
Cotorsion pairs in Hopfological algebra
Mariko Ohara, Dai Tamaki
In an intriguing paper arXiv:math/0509083 Khovanov proposed a generalization of homological algebra, called Hopfological algebra. Since then, several attempts have been made to imp…
math.KT2018
On graded -rings and projective schemes in spectral algebraic geometry
Mariko Ohara, Takeshi Torii
We introduce graded -rings and graded modules over them, and study their properties. We construct projective schemes associated to connective -grad…