prime ring
(algebra, ring theory) Any nonzero ring R such that for any two (two-sided) ideals P and Q in R, the product PQ = 0 (the zero ideal) if and only if P = 0 or Q = 0.
Not tight or narrow; allowing something to pass or escape through it.
A rack designed to hold toasted bread, with a partition for each slice. / A type of bicycle stand consisting of several inverted U-shaped metal bars connected at ground level by two parallel rails.
U
The manufacture of chains.
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DiQt（ディクト）
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