No CrossRef data available.
Published online by Cambridge University Press: 03 November 2016
We will consider first the second order partial differential equation
where α, β, γ, δ, ε, η are all functions of x or t only
Suppose the six coefficients are functions of x. Then since
we have
for none of the six coefficients contains t.
page no 27 note * I am indebted to Mr. R. L. Goodstein for pointing this out to me.
page no 29 note * Jeffreys, H., Operational Methods, Cambridge Mathematical Tracts, No. 23 (1927)Google Scholar.