The 
-adic
norm satisfies
 |
for all 
and 
.
Strong Triangle Inequality
See also
p-adic Number, Triangle InequalityExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Strong Triangle Inequality." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/StrongTriangleInequality.html