diff --git a/.obsidian/workspace b/.obsidian/workspace
index b831b73a4..591902722 100644
--- a/.obsidian/workspace
+++ b/.obsidian/workspace
@@ -34,7 +34,7 @@
           {
             "id": "81947fe854c7e313",
             "type": "leaf",
-            "dimension": 14.285714285714285,
+            "dimension": 7.142857142857142,
             "state": {
               "type": "markdown",
               "state": {
@@ -43,6 +43,18 @@
               }
             }
           },
+          {
+            "id": "f5df3846a839a227",
+            "type": "leaf",
+            "dimension": 7.142857142857142,
+            "state": {
+              "type": "markdown",
+              "state": {
+                "file": "dirichlet function.md",
+                "mode": "source"
+              }
+            }
+          },
           {
             "id": "89a7352a0395d613",
             "type": "leaf",
@@ -201,7 +213,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "2021-06-15.md",
+                "file": "dirichlet function.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -218,7 +230,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "2021-06-15.md"
+                "file": "dirichlet function.md"
               }
             }
           },
@@ -274,17 +286,17 @@
     "width": 300,
     "collapsed": true
   },
-  "active": "81947fe854c7e313",
+  "active": "f5df3846a839a227",
   "lastOpenFiles": [
+    "dirichlet function.md",
     "2021-06-15.md",
+    "weierstrass function.md",
     "ryan faulhaber.md",
     "ryan.md",
     "2021-06-13.md",
     "ack.md",
     "do.md",
     "receive.md",
-    "transcluded.md",
-    "pomodoro.md",
-    "a. p..md"
+    "transcluded.md"
   ]
 }
\ No newline at end of file
diff --git a/2021-06-15.md b/2021-06-15.md
index ccc51e305..db7cc8bce 100644
--- a/2021-06-15.md
+++ b/2021-06-15.md
@@ -9,8 +9,7 @@
 - [[functions]]
 	- [[interesting functions]]
 		- [[dirichlet function]]
-			- 
 		- [[thomae's function]]
 		- [[cantor function]]
 		- [[weierstrass function]]
-			- one of the first [[fractal]] curve studied
\ No newline at end of file
+			- one of the first [[fractal]] curves studied
\ No newline at end of file
diff --git a/dirichlet function.md b/dirichlet function.md
new file mode 100644
index 000000000..e69de29bb
diff --git a/weierstrass function.md b/weierstrass function.md
new file mode 100644
index 000000000..62732b5e1
--- /dev/null
+++ b/weierstrass function.md	
@@ -0,0 +1,3 @@
+- a [[function]]
+	- [[wp]] https://en.wikipedia.org/wiki/Weierstrass_function
+		- [[go]] [[wp]]
\ No newline at end of file