Directed evolution optimizes protein function by the successive generations of random mutation, artificial selection or screening. This simple design algorithm circumvents our ignorance of how ...

Let d₁ ≥ d₂ ≥ ··· ≥ dn be the degree sequence of a graph G of order n and μ₁ ≥ μ₂ ≥ ··· ≥ μn = 0 be the Laplacian eigenvalues of G. In this paper, we propose a new conjecture that for any graph G ...