Cosmetics.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>

protocol/protocol.tex

@@ -349,12 +349,11 @@ $\CryptoBoxSpecific$) \cite{cryptobox} as follows.
 \end{bytefield}
 \end{lrbox}
 
-Let $\TransmitPublicNew{1..\NNew}$ be the Curve25519 public keys for the intended
+Let $\TransmitPublicNew{\mathrm{1}..\NNew}$ be the Curve25519 public keys for the intended
 recipient addresses of each new \coin, and let $\Plaintext{1..\NNew}$ be their
 \coinPlaintexts.
 
 Define:
-
 \begin{equation*}
 \begin{aligned}
 \Prenonce(i, \EphemeralPublic, \TransmitPublicNew{i}) &:= \CryptoBoxSealHashbox{\prenoncebox} \\