A set is said to be GCD-closed if for .
GCD-Closed Set
See also
Bourque-Ligh ConjectureExplore with Wolfram|Alpha
References
Hong, S. "On the Bourque-Ligh Conjecture of Least Common Multiple Matrices." J. Algebra 218, 216-228, 1999.Referenced on Wolfram|Alpha
GCD-Closed SetCite this as:
Weisstein, Eric W. "GCD-Closed Set." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/GCD-ClosedSet.html