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A generator inside angle or round brackets, naming everything it multiplies into.
Also known as: Generated ideal, Ideal generated by, Angle brackets around a generator
Angle brackets around an element name the ideal it generates: everything you get by multiplying it by anything in the ring. Ideals are to rings what normal subgroups are to groups, which is why the quotient notation R/I looks the same as G/N.
Denotes the ideal generated by the listed elements — the smallest ideal containing them.
Contexts: Mathematics
Plays the role in ring theory that a normal subgroup plays in group theory: it is exactly what a ring can be quotiented by.
Contexts: Mathematics
Is written with angle brackets or round brackets interchangeably; round brackets collide with ordinary grouping and angle brackets with inner products.
Contexts: Mathematics
A pair of angled strokes meeting at a point, one opening right and one opening left, with a letter between them.