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algebra, the center of a ring R is the subring consisting of the elements x such that xy = yx for all elements y in R. It is a commutative ring and is denoted...

their place in the center of the ring. Common British versions include: Ring-a-ring o' roses, A pocket full of posies. A-tishoo! A-tishoo! We all fall...

for a semigroup is defined likewise and it is a subsemigroup. The center of a ring (or an associative algebra) R is the subset of R consisting of all...

The rings of Saturn are the most extensive and complex ring system of any planet in the Solar System. They consist of countless small particles, ranging...

parks, these are commonly used on water slides, with a person sitting in the center of the ring, legs and body leaning over the sides. Some designs even...

cross with a dot in each quadrant in the center, with the lettering "दस रुपये" and "TEN RUPEES" on the outer ring. The second design featured two horizontal...

The Lord of the Rings is an epic high fantasy novel by the English author and scholar J. R. R. Tolkien. Set in Middle-earth, the story began as a sequel...

instead of a field, the entries are supposed to belong to a ring, then one must add the condition that c belongs to the center of the ring. One special...

The Ring of Fire (also known as the Pacific Ring of Fire, the Rim of Fire, the Girdle of Fire or the Circum-Pacific belt) is a tectonic belt of volcanoes...

associative algebra A over a commutative ring (often a field) K is a ring A together with a ring homomorphism from K into the center of A. This is thus an...

In mathematics, a subring of R is a subset of a ring that is itself a ring when binary operations of addition and multiplication on R are restricted to...

Informally, a ring is a set equipped with two binary operations satisfying properties analogous to those of addition and multiplication of integers. Ring elements...

Ring LLC is a manufacturer of home security and smart home devices owned by Amazon. It manufactures a titular line of smart doorbells, home security cameras...

These consist of the following: The deep inguinal ring (internal or deep abdominal ring, abdominal inguinal ring, internal inguinal ring, annulus abdominalis)...

Der Ring des Nibelungen (The Ring of the Nibelung), WWV 86, is a cycle of four German-language epic music dramas composed by Richard Wagner. The works...

Initial attempts to insert a stationary field coil within the center of the ring to help the lines penetrate into the center proved too complex to engineer...

color and cut of the gem in the center. There is a wide selection of emblems, pictures, and words that can be added to the sides of the rings and even inside...

instead, a roughly circular ring or plateau, possibly discontinuous, surrounds the crater's center, with the crater rim still farther out from the center. The...

together with a ring homomorphism η : K → Z ( A ) , {\displaystyle \eta \colon K\to Z(A),} where Z(A) is the center of A. Since η is a ring homomorphism...

Drinfeld) is a variant of the notion of the center of a monoid, group, or ring to a category. The center of a monoidal category C = ( C , ⊗ , I ) {\displaystyle...