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The study of algebraic structures and properties applying to large classes of such structures. For example, ideas from group theory and ring theory are extended and considered for structures with other signatures (systems of basic or fundamental operations).

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If a map between unital rings preserves multiplication and successor, does it preserve addit...

Welcome to my first MathOverflow posting! This is a question about rings, all of them assumed to be both unital and associative. Let $f\colon R\to S$ be a map between rings such that $f(xy)=f(x)f(y)$ …