London, British Library Additional MS 39564 is an anonymous collection of English lessons for the two-hand sword, tentatively dated to first quarter sixteenth century. This manuscript peculiar in several ways, aside from it being one only three such texts known scholars. paper discusses two aspects this that speak its origins and survival present form. The appear be out order while there no cha...

A graph is subcubic if its maximum degree is at most 3. The bipartite density of a graph G is defined as b(G) = max{|E(B)|/|E(G)| : B is a bipartite subgraph of G}. It was conjectured by Bondy and Locke that if G is a triangle-free subcubic graph, then b(G) ≥ 45 and equality holds only if G is in a list of seven small graphs. The conjecture has been confirmed recently by Xu and Yu. This note gi...