The 
-layer of 
, 
is the unique minimal normal subgroup of 
which maps onto 
.
p-Layer
See also
Bp-Theorem, Lp-'-Balance Theorem, Signalizer Functor TheoremExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "p-Layer." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/p-Layer.html