diff --git a/math/README.md b/math/README.md
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--- a/math/README.md
+++ b/math/README.md
@@ -1,16 +1,4 @@
-## math, logic, dynamic programming
-
-<br>
-
-### dynamic programming
-
-<br>
-
-* take a recursive algorithm and cache overlapping problems (repeated calls).
-* the runtime is given by the number of calls.
-* **top-down**: how can we divide the problem into sub-problems?
-    * top-down dynamic programming is called **memoization**.
-* **bottom-up**: solve for a simple case, then figure out for more elements.
+## math
 
 <br>