The tweaks and fixes never stop

1 files changed, 1 insertions, 1 deletions

diff --git a/source/know/concept/self-steepening/index.md b/source/know/concept/self-steepening/index.md
index f934ab7..9666167 100644
--- a/source/know/concept/self-steepening/index.md
+++ b/source/know/concept/self-steepening/index.md
@@ -19,7 +19,7 @@ nonlinear Schrödinger equation:
 
 $$\begin{aligned}
     0
-    = i\pdv{A}{z} - \frac{\beta_2}{2} \pdvn{2}{A}{t} + \gamma \Big(1 + \frac{i}{\omega_0} \pdv{}{t} \Big) \big(|A|^2 A\big)
+    = i\pdv{A}{z} - \frac{\beta_2}{2} \pdvn{2}{A}{t} + \gamma \Big(1 + \frac{i}{\omega_0} \pdv{}{t} \Big) |A|^2 A
 \end{aligned}$$
 
 Where $$\omega_0$$ is the angular frequency of the pump.