Expand knowledge base, fix a:visited CSS

1 files changed, 4 insertions, 4 deletions

diff --git a/content/know/concept/path-integral-formulation/index.pdc b/content/know/concept/path-integral-formulation/index.pdc
index c66aed8..1698e27 100644
--- a/content/know/concept/path-integral-formulation/index.pdc
+++ b/content/know/concept/path-integral-formulation/index.pdc
@@ -27,7 +27,7 @@ to the destination $x_N$ at time $t_N$:
 $$\begin{aligned}
     \boxed{
         K(x_N, t_N; x_0, t_0)
-        = A \sum_{\mathrm{all}\:x(t)} \exp(i S[x] / \hbar)
+        = A \sum_{\mathrm{all}\:x(t)} \exp\!(i S[x] / \hbar)
     }
 \end{aligned}$$
 
@@ -156,7 +156,7 @@ The definition of the propagator $K$ is then further reduced to the following:
 $$\begin{aligned}
     K
     = \Big( \frac{- i m}{2 \pi \hbar \Delta t} \Big)^{\!N / 2}
-    \idotsint \exp(i S[x] / \hbar) \dd{x_1} \cdots \dd{x_{N-1}}
+    \idotsint \exp\!(i S[x] / \hbar) \dd{x_1} \cdots \dd{x_{N-1}}
 \end{aligned}$$
 
 Finally, for the purpose of normalization,
@@ -173,8 +173,8 @@ which sums over all possible paths $x(t)$:
 
 $$\begin{aligned}
     K
-    = \int \exp(i S[x] / \hbar) \:D[x]
-    = A \sum_{\mathrm{all}\:x(t)} \exp(i S[x] / \hbar)
+    = \int \exp\!(i S[x] / \hbar) \:D[x]
+    = A \sum_{\mathrm{all}\:x(t)} \exp\!(i S[x] / \hbar)
 \end{aligned}$$