Strong Depth Relevance

Relevant logics infamously have the property that they only validate a conditional when some propositional variable is shared between its antecedent and consequent. This has been strengthened in variety of ways over last half-century. Two more famous these strengthenings are strong sharing depth relevance property. In this paper I demonstrate an appropriate class relevant might naturally be characterized as supremum two properties. also show how to use fact seem constructive previously unknown ways.