diff --git a/tex.snippets b/tex.snippets
index 45aa4c7..d869887 100644
--- a/tex.snippets
+++ b/tex.snippets
@@ -641,4 +641,22 @@ snippet DD "D" iA
 \mathbb{D}
 endsnippet
 
+# computer science snippets
+
+context "math()"
+snippet Of "O(...)" iA
+O($1)$0
+endsnippet
+
+context "math()"
+snippet Tf "Theta(...)" iA
+\Theta($1)$0
+endsnippet
+
+context "math()"
+snippet Omf "Omega(...)" iA
+\Omega($1)$0
+endsnippet
+
+
 # vim:ft=snippets