Two group schemes $ G $ and $ G _ {1} $ are said to be isogenous if there exists an isogeny $ f: G \rightarrow G _ {1} $. An …
First, any mor-phism of abelian varieties that preserves the identity element (the distinguished point that is the zero …
At the core, mature chondrocytes have a round shape and often appear as a group of up to eight cells. These groups are …
透明软骨基质的 化学 成分主要为嗜碱性软骨 粘蛋白 ,它以长链的 透明质酸 分子 为主干，干链上以许多较短的 蛋白质 链连接硫酸软骨素A …
A rational homomorphism phi:G->G^' defined over a field is called an isogeny when dimG=dimG^'. Two groups G and …
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