Riemann method
preferred label: روش ریمان @fa
type: Concept
related: Goursat problem

Riemann formula
preferred label: فرمول ریمان @fa
type: Concept
related: Goursat problem

boundary condition
preferred label: شرط مرزی @fa
type: Concept
related: Goursat problem

Goursat problem
related: boundary condition
related: Riemann formula
related: Riemann method
broader: hyperbolic partial differential equation
preferred label: مسئله گورسا @fa
type: Concept

hyperbolic partial differential equation
preferred label: معادله دیفرانسیل جزئی هذلولوی @fa
type: Concept
narrower: Goursat problem