Add "Fourier transform"

3 files changed, 9 insertions, 0 deletions

diff --git a/content/know/category/mathematics.md b/content/know/category/mathematics.md
index e873d90..76106f2 100644
--- a/content/know/category/mathematics.md
+++ b/content/know/category/mathematics.md
@@ -8,3 +8,6 @@ Alphabetical list of concepts in this category.
 
 ## D
 * [Dirac delta function](/know/concept/dirac-delta-function/)
+
+## F
+* [Fourier transform](/know/concept/fourier-transform/)
diff --git a/content/know/category/physics.md b/content/know/category/physics.md
index 8bcba4d..ff6b4e8 100644
--- a/content/know/category/physics.md
+++ b/content/know/category/physics.md
@@ -9,6 +9,9 @@ Alphabetical list of concepts in this category.
 ## B
 * [Bloch's theorem](/know/concept/blochs-theorem/)
 
+## F
+* [Fourier transform](/know/concept/fourier-transform/)
+
 ## D
 * [Dirac delta function](/know/concept/dirac-delta-function/)
 * [Dirac notation](/know/concept/dirac-notation/)
diff --git a/content/know/concept/index.md b/content/know/concept/index.md
index 697c622..84df249 100644
--- a/content/know/concept/index.md
+++ b/content/know/concept/index.md
@@ -13,6 +13,9 @@ Alphabetical list of concepts in this knowledge base.
 * [Dirac delta function](/know/concept/dirac-delta-function/)
 * [Dirac notation](/know/concept/dirac-notation/)
 
+## F
+* [Fourier transform](/know/concept/fourier-transform/)
+
 ## P
 * [Pauli exclusion principle](/know/concept/pauli-exclusion-principle/)
 * [Probability current](/know/concept/probability-current/)