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-rw-r--r--source/know/concept/fourier-transform/index.md5
1 files changed, 3 insertions, 2 deletions
diff --git a/source/know/concept/fourier-transform/index.md b/source/know/concept/fourier-transform/index.md
index 32edb47..f8b5b2a 100644
--- a/source/know/concept/fourier-transform/index.md
+++ b/source/know/concept/fourier-transform/index.md
@@ -1,5 +1,6 @@
---
title: "Fourier transform"
+sort_title: "Fourier transform"
date: 2021-02-22
categories:
- Mathematics
@@ -152,7 +153,7 @@ $$\begin{aligned}
<div class="accordion">
<input type="checkbox" id="proof-constants-ND"/>
<label for="proof-constants-ND">Proof</label>
-<div class="hidden">
+<div class="hidden" markdown="1">
<label for="proof-constants-ND">Proof.</label>
The inverse FT of the forward FT of $f(\vb{x})$ must be equal to $f(\vb{x})$ again, so:
@@ -198,7 +199,7 @@ $$\begin{aligned}
<div class="accordion">
<input type="checkbox" id="proof-laplacian"/>
<label for="proof-laplacian">Proof</label>
-<div class="hidden">
+<div class="hidden" markdown="1">
<label for="proof-laplacian">Proof.</label>
We insert $\nabla^2 f$ into the FT,
decompose the exponential and the Laplacian,