diff --git a/general.typ b/general.typ
new file mode 100644
index 0000000..9ee9c09
--- /dev/null
+++ b/general.typ
@@ -0,0 +1,16 @@
+// general document
+
+#import "main.typ": gen_title, gen_authors, doc_template
+
+#let template(
+  title: none,
+  authors: none,
+  body
+) = {
+  doc_template({
+    gen_title(title: title)
+    v(15pt, weak: true)
+    gen_authors(authors: authors)
+    body
+  })
+}
diff --git a/math_prob.typ b/math_prob.typ
new file mode 120000
index 0000000..8940680
--- /dev/null
+++ b/math_prob.typ
@@ -0,0 +1 @@
+general.typ
\ No newline at end of file