ring isomorphism
plural of copartnery
(algebra) A ring homomorphism which is also a bijection.
A district of Bristol, England immediately south of the River Avon
The houseleek (Sempervivum tectorum).
その二つの環が本質的に同じであることを証明するために、それらの間に明示的な全単射の環準同型を構成した。
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