Wiki. 偏屈 t-结构 [偏屈t-结构]

偏屈 t-结构是可构造复形范畴 $D_c^b(X)$ 上的 t-结构,

$$ {^p D_c ^{\leq 0}} (X) = \{F \in D_c^b(X) \mid \forall j \in\mathbb{Z}, \dim \operatorname{supp} H^j(F)\leq j\}, $$

$$ {^p D_c ^{\geq 0}} (X) = \{F \in D_c^b(X) \mid \forall j \in\mathbb{Z},\dim \operatorname{supp} H^j(\mathbb D F)\leq - j\}. $$