diff --git a/tech/LFSR.wiki b/tech/LFSR.wiki
index 950c315..9d0306f 100644
--- a/tech/LFSR.wiki
+++ b/tech/LFSR.wiki
@@ -11,6 +11,10 @@ The maximum period for a _n_ bit shift register is
 
 2^n - 1
 
+An LFSR can be generalized as a recurrence relationship where
+- The preceding terms are not raised to a power
+- There are no added constants
+
 A *tap* is where a bit is read and fed back into itself.
 
 == Reverse Engineering ==