Add "Partial fraction decomposition" and "Hilbert space"

1 files changed, 3 insertions, 3 deletions

diff --git a/latex/know/concept/legendre-transform/source.md b/latex/know/concept/legendre-transform/source.md
index 954b6fc..20afdf7 100644
--- a/latex/know/concept/legendre-transform/source.md
+++ b/latex/know/concept/legendre-transform/source.md
@@ -5,9 +5,9 @@
 
 The **Legendre transform** of a function $f(x)$ is a new function $L(f')$,
 which depends only on the derivative $f'(x)$ of $f(x)$, and from which
-the original function $f(x)$ can be reconstructed. The point is, just
-like other transforms (e.g. Fourier), that $L(f')$ contains the same
-information as $f(x)$, just in a different form.
+the original function $f(x)$ can be reconstructed. The point is,
+analogously to other transforms (e.g. [Fourier](/know/concept/fourier-transform/)),
+that $L(f')$ contains the same information as $f(x)$, just in a different form.
 
 Let us choose an arbitrary point $x_0 \in [a, b]$ in the domain of
 $f(x)$. Consider a line $y(x)$ tangent to $f(x)$ at $x = x_0$, which has