Fix derivatives in "Probability current"

1 files changed, 5 insertions, 5 deletions

diff --git a/latex/know/concept/probability-current/source.md b/latex/know/concept/probability-current/source.md
index a6780f7..69faf0c 100644
--- a/latex/know/concept/probability-current/source.md
+++ b/latex/know/concept/probability-current/source.md
@@ -14,8 +14,8 @@ its derivative with respect to time $t$, and when necessary substitute
 in the other side of the Schrödinger equation to get:
 
 $$\begin{aligned}
-    \pd{P}{t}
-    &= \int_{V} \psi \pd{\psi^*}{t} + \psi^* \pd{\psi}{t} \dd[3]{\vec{r}}
+    \pdv{P}{t}
+    &= \int_{V} \psi \pdv{\psi^*}{t} + \psi^* \pdv{\psi}{t} \dd[3]{\vec{r}}
     = \frac{i}{\hbar} \int_{V} \psi (\hat{H} \psi^*) - \psi^* (\hat{H} \psi) \dd[3]{\vec{r}}
     \\
     &= \frac{i}{\hbar} \int_{V} \psi \Big( \!-\! \frac{\hbar^2}{2 m} \nabla^2 \psi^* + V(\vec{r}) \psi^* \Big)
@@ -51,8 +51,8 @@ Returning to the derivation of $\vec{J}$, we now have the following
 equation:
 
 $$\begin{aligned}
-    \pd{P}{t}
-    = \int_{V} \pd{|\psi|^2}{t} \dd[3]{\vec{r}}
+    \pdv{P}{t}
+    = \int_{V} \pdv{|\psi|^2}{t} \dd[3]{\vec{r}}
     = - \int_{V} \nabla \cdot \vec{J} \dd[3]{\vec{r}}
 \end{aligned}$$
 
@@ -62,7 +62,7 @@ for $\vec{J}$:
 $$\begin{aligned}
     \boxed{
         \nabla \cdot \vec{J}
-        = - \pd{|\psi|^2}{t}
+        = - \pdv{|\psi|^2}{t}
     }
 \end{aligned}$$