Add "Legendre transform"

1 files changed, 2 insertions, 2 deletions

diff --git a/latex/know/concept/fourier-transform/source.md b/latex/know/concept/fourier-transform/source.md
index 3e25980..10cb021 100644
--- a/latex/know/concept/fourier-transform/source.md
+++ b/latex/know/concept/fourier-transform/source.md
@@ -51,8 +51,8 @@ $$\begin{aligned}
 \end{aligned}$$
 
 But that still gives a lot of freedom. The exact choices of $A$ and $B$
-are generally motivated by the convolution theorem and Parseval's
-theorem.
+are generally motivated by the [convolution theorem](/know/concept/convolution-theorem/)
+and [Parseval's theorem](/know/concept/parsevals-theorem/).
 
 The choice of $|s|$ depends on whether the frequency variable $k$
 represents the angular ($|s| = 1$) or the physical ($|s| = 2\pi$)