同種の代数系の間の準同型写像（準写）: 定義域上の演算の後に写像した値と、写像した後に値域上の演算を行って得た値が一致する写像。 Prior To the nineteenth century, algebra was outlined as being the analyze of polynomials.[two] Abstract algebra came into existence throughout the nineteenth century as far more advanced challenges and Alternative techniques produced. Concrete difficulties an... https://x.com/Anumhsite/status/1838205217483137122