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  2. Algebra tile - Wikipedia

    en.wikipedia.org/wiki/Algebra_tile

    Once the sides of the rectangle are represented by the algebra tiles, one would then try to figure out which algebra tiles would fill in the rectangle. For instance, if one had x×x, the only algebra tile that would complete the rectangle would be x 2, which is the answer.

  3. List of algebras - Wikipedia

    en.wikipedia.org/wiki/List_of_algebras

    This is a list of possibly nonassociative algebras.An algebra is a module, wherein you can also multiply two module elements. (The multiplication in the module is compatible with multiplication-by-scalars from the base ring).

  4. Zero-divisor graph - Wikipedia

    en.wikipedia.org/wiki/Zero-divisor_graph

    In mathematics, and more specifically in combinatorial commutative algebra, a zero-divisor graph is an undirected graph representing the zero divisors of a commutative ring. It has elements of the ring as its vertices , and pairs of elements whose product is zero as its edges .

  5. Complex conjugate root theorem - Wikipedia

    en.wikipedia.org/wiki/Complex_conjugate_root_theorem

    The non-real factors come in pairs which when multiplied give quadratic polynomials with real coefficients. Since every polynomial with complex coefficients can be factored into 1st-degree factors (that is one way of stating the fundamental theorem of algebra ), it follows that every polynomial with real coefficients can be factored into ...

  6. Wheel theory - Wikipedia

    en.wikipedia.org/wiki/Wheel_theory

    In particular, division by zero is meaningful. The real numbers can be extended to a wheel, as can any commutative ring . The term wheel is inspired by the topological picture ⊙ {\displaystyle \odot } of the real projective line together with an extra point ⊥ ( bottom element ) such that ⊥ = 0 / 0 {\displaystyle \bot =0/0} .

  7. Free monoid - Wikipedia

    en.wikipedia.org/wiki/Free_monoid

    In abstract algebra, the free monoid on a set is the monoid whose elements are all the finite sequences (or strings) of zero or more elements from that set, with string concatenation as the monoid operation and with the unique sequence of zero elements, often called the empty string and denoted by ε or λ, as the identity element.