The rows of this matrix are indexed by 1 ≤ "i"1 ≤ "n"4/"k" and 1 ≤ "i"2 ≤ "k", while the columns are indexed by 1 ≤ "j"1 ≤ "n"3 and 1 ≤ "j"2 ≤ "n". So the functions in our matrix are monomials in "x" and "e""x" and their derivatives, and we are interpolating at the "k" points 0,α,2α...,("k" − 1)α. Assuming that "e"α is algebraic we can form the number field Q(α,"e"α) of degree "m" over Q, and then multiply Δ by a suitable denominator as well as all its images under the embeddings of the field Q(α,"e"α) into C. For algebraic reasons this product is necessarily an integer, and using arguments relating to Wronskians it can be shown that it is non-zero, so its absolute value is an integer Ω ≥ 1.