Homeomorphic morphism and homotopy equivalence are two important concepts in the theory of algebraic topology.
同胚映射和同伦等价是代数拓扑学中的两个重要概念。
2
Circle matrix is the algebraic description of all the resource circles in a directed graph, and equivalence reciprocally to that one of complementary set and T-characteristic vector.
回路矩阵是一个资源有向图全部资源回路的代数描述，并且它与补集及t -特征向量矩阵相互等价。
3
This article is told the sense of equivalence between algebraic definition and projecting definition.