fixed #13

Author: arnog

src/compute-engine/latex-syntax/dictionary/definitions-arithmetic.ts

@@ -800,6 +800,10 @@ export const DEFINITIONS_ARITHMETIC: LatexDictionary = [
     latexTrigger: ['\\infty'],
     parse: 'PositiveInfinity',
   },
+  {
+    latexTrigger: ['\\infin'],
+    parse: 'PositiveInfinity',
+  },
   {
     name: 'PositiveInfinity',
     serialize: (serializer) => serializer.options.positiveInfinity,

test/compute-engine/latex-syntax/stefnotch.test.ts

@@ -194,11 +194,7 @@ describe('STEFNOTCH #13', () => {
         ["ForAll", "n", ["LessEqual", "a_n", "c_n", "b_n"]],
         [
           "Equal",
-          [
-            "Limit",
-            ["Function", "c_n", "n"],
-            ["Error", "unexpected-command", ["LatexString", "\\infin"]]
-          ],
+          ["Limit", ["Function", "c_n", "n"], "PositiveInfinity"],
           "a"
         ]
       ]