diff --git a/hypergraph categories.md b/hypergraph categories.md
new file mode 100644
index 000000000..6d553ed1b
--- /dev/null
+++ b/hypergraph categories.md	
@@ -0,0 +1,2 @@
+- a [[paper]].
+  - #go https://arxiv.org/abs/1806.08304
diff --git a/journal/2023-01-23.md b/journal/2023-01-23.md
index 072fc13e4..ee9fdc061 100644
--- a/journal/2023-01-23.md
+++ b/journal/2023-01-23.md
@@ -8,4 +8,4 @@
       - [[ncatlab]] ~ https://ncatlab.org
     - papers
       - [[a rosetta stone]]
-      - [[hypergraph categories]]
+      - [[hypergraph categories]] ~ https://arxiv.org/abs/1806.08304