(mathematics) Any of the scalar products a_ij=2(r_i,r_j)/(r_i,r_i) that make up the Cartan matrix of a simple Lie algebra.

plural of Cartan integer

A number that is not an integer.

plural of non-integer

(algebra) Any complex number of the form a + bi, where a and b are integers.

(algebra) A complex number of the form a+b𝜔, where a and b are integers and ω is defined by the following two rules: (1) 𝜔³=1 and (2) 1+𝜔+𝜔²=0; an element of the Euclidean domain ℤ[𝜔].

plural of Eisenstein integer

(mathematics) Any number obtained by dividing an odd integer by two

plural of half-integer

plural of integer factorization