Definition:Ljunggren Equation
Jump to navigation
Jump to search
Definition
The Ljunggren equation is the indeterminate Diophantine equation:
- $x^2 + 1 = 2 y^4$
Also see
Source of Name
This entry was named for Wilhelm Ljunggren.
Sources
- 1942: W. Ljunggren: Zur Theorie der Gleichung $x^2 + 1 = D y^4$ (Avh. Norske Vid. Akad.Oslo.I. Vol. 27, no. 5: p. 27)