👉 In mathematics, a coislander is a type of polynomial that has only one variable and can be expressed as a sum of products of two polynomials. These are called "coislanders" because they have the property that their coefficients in each product are all integers or rational numbers. For example, consider the polynomial f(x) = x^4 - 2x^3 + 3x^2 + 10x + 5. This polynomial has only one variable (x
