An axiomatic system is complete if every tautology is a theorem (derivable from axioms). Conversely, a deductive system is complete if every logically valid formula is derivable. A logic is structurally complete if every admissible rule is derivable, i.e., formula 15. The Hodgkin's lymphoma chemotherapeutic drug vinblastine is derivable from the rosy periwinkle. "R" is a scalar valued chiral superfield derivable from the supervielbeins and spin connection. A derivative of furan, this simple compound is a potential biofuel, being derivable from cellulose. The horizontal axis represents the energy equation derivable from The first law of thermodynamics. Given two CFGs, is there any string derivable from both grammars? This makes Zipf's probability density function derivable from Pareto's. Both physical principles are mutually derivable from each other and are complementary. Soluble polymers are derivable from 3-substituted thiophenes where the 3-substituent is butyl or longer. The three variants of the Penrose tiling are mutually locally derivable. Conversely, these sentences are derivable from "the thing "x" is an arthropod". These structures must exist in the original data or be derivable from the data themselves. An orientation of a -submanifold is therefore extra data not derivable from the ambient manifold.