diff --git a/zip-0221.html b/zip-0221.html
index 92b9e996..f54a3bce 100644
--- a/zip-0221.html
+++ b/zip-0221.html
@@ -24,9 +24,17 @@ License: MIT
Light client
A client that is not a full participant in the network of Zcash peers. It can send and receive payments, but does not store or validate a copy of the block chain.
High probability
- An event occurs with high probability if it occurs with probability 1-O(1/2^λ), where λ is a security parameter.
+ An event occurs with high probability if it occurs with probability
+ \(1-O(1/2^λ)\)
+ , where
+ \(λ\)
+ is a security parameter.
Negligible probability
- An event occurs with negligible probability if it occurs with probability O(1/2^λ), where λ is the security parameter.
+ An event occurs with negligible probability if it occurs with probability
+ \(O(1/2^λ)\)
+ , where
+ \(λ\)
+ is the security parameter.
Merkle mountain range (MMR)
A Merkle mountain range (MMR) is a binary hash tree that allows for efficient appends of new leaves without changing the value of existing nodes.
diff --git a/zip-0221.rst b/zip-0221.rst
index 1f76d6be..69ede7d5 100644
--- a/zip-0221.rst
+++ b/zip-0221.rst
@@ -25,12 +25,12 @@ described in ZIP 200. [#zip-0200]_
receive payments, but does not store or validate a copy of the block chain.
*High probability*
- An event occurs with high probability if it occurs with probability 1-O(1/2^λ), where λ
- is a security parameter.
+ An event occurs with high probability if it occurs with probability :math:`1-O(1/2^λ)`,
+ where :math:`λ` is a security parameter.
*Negligible probability*
- An event occurs with negligible probability if it occurs with probability O(1/2^λ),
- where λ is the security parameter.
+ An event occurs with negligible probability if it occurs with probability :math:`O(1/2^λ)`,
+ where :math:`λ` is the security parameter.
*Merkle mountain range (MMR)*
A Merkle mountain range (MMR) is a binary hash tree that allows for efficient appends of