diff --git a/lua/typstar/snippets/math.lua b/lua/typstar/snippets/math.lua
index 9473880..b661467 100644
--- a/lua/typstar/snippets/math.lua
+++ b/lua/typstar/snippets/math.lua
@@ -74,7 +74,11 @@ return {
     snip('it', 'integral_(<>)^(<>)', { i(1, 'a'), i(2, 'b') }, math),
     snip('oit', 'integral_(Omega}', {}, math),
     snip('dit', 'integral_{<>}', { i(1, 'Omega') }, math),
-    snip('sm', 'sum_(<>)^(<>)', { i(1, 'i=0'), i(2, 'oo') }, math),
+
+    snip('sm', 'sum ', {}, math),
+    snip('sum', 'sum_(<>)^(<>)', { i(1, 'i=0'), i(2, 'oo') }, math),
+    snip('osm', 'sum_Omega', {}, math),
+    snip('dsm', 'sum_(<>)', { i(1, 'I') }, math),
 
     snip('lm', 'lim <>', { i(1, 'a_n') }, math),
     snip('lim', 'lim_(<> ->> <>) <>', { i(1, 'n'), i(2, 'oo'), i(3, 'a_n') }, math),