Two vector bundles are stably equivalent iff isomorphic vector bundles are obtained upon Whitney summing each vector bundle with a trivial vector bundle.
Stable Equivalence
See also
Vector Bundle, Whitney SumExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Stable Equivalence." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/StableEquivalence.html