Management of Hypertension
Management of Hypertension is a scholarly work, published in 1969 in ''Diseases of the chest''. The main subjects of the publication include mathematics, zero, graph theory, spectral graph theory, graph, flow, combinatorics, discrete mathematics, nowhere dense set, signed graph, signature, and pure mathematics. The authors characterise signed cubic graphs that admit a nowhere-zero 3-flow, a nowhere-zero 4-flow, and nowhere-zero flows with values in abelian groups of order 3 and 4.