WebbStep 1. Let F F be a free abelian group generated by M ×N M × N and let A A be an abelian group. Then by definition (of free groups), if φ: M ×N → A φ: M × N → A is any set map, and M ×N ↪ F M × N ↪ F by inclusion, then there is a unique abelian group homomorphism Φ: F → A Φ: F → A so that the following diagram commutes. . WebbEasy to install, easy to save - up to 33% off. Shop now for big savings on select easy-to-set-up Ring Video Doorbells and Security Cams. Shop Now
Tensor product of fields - Wikipedia
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construction of product rings Z/nZ x Z/mZ - SageMath
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