Columbia subject headings:
Approximation theory.
Asymptotic expansions.
Differential equations--Numerical solutions.
Integrals.
Harvard subject headings:
Approximation theory.
Asymptotic expansions.
Differential equations--Numerical solutions.
Integrals.
Princeton subject headings:
Approximation theory.
Asymptotic expansions.
Differential equations--Numerical solutions.
Integrals.