diff --git a/src/translator/math/Math.cpp b/src/translator/math/Math.cpp
index 81dba3d..f8cd3ed 100644
--- a/src/translator/math/Math.cpp
+++ b/src/translator/math/Math.cpp
@@ -494,10 +494,6 @@ Draw Parse(MathParser::AtomContext* context,
     }
   }
 
-  if (context->scientific()) {
-    return Parse(context->scientific());
-  }
-
   if (context->function()) {
     return Parse(context->function(), style);
   }
@@ -522,10 +518,6 @@ Draw Parse(MathParser::VariableContext* context, Style* style) {
   return Draw(label);
 }
 
-Draw Parse(MathParser::ScientificContext* context) {
-  return Draw(to_wstring(context->SCIENTIFIC_NUMBER()->getText()));
-}
-
 Draw Parse(MathParser::MatrixContext* context, Style* style) {
   // 1) Get matrix content.
   std::vector<std::vector<Draw>> content;
diff --git a/src/translator/math/Math.g4 b/src/translator/math/Math.g4
index 14ab813..283008d 100644
--- a/src/translator/math/Math.g4
+++ b/src/translator/math/Math.g4
@@ -49,34 +49,22 @@ factor : valueBang (powop valueBang)* ;
 valueBang: value | valueBang BANG;
 value : (PLUS | MINUS)? atom ;
 atom : STRING
-     | scientific
      | variable
      | function
      | matrix
      | LBRACE expression RBRACE
      | LPAREN expression RPAREN
      ;
-scientific : SCIENTIFIC_NUMBER ;
 function : variable LPAREN equation (',' equation)* RPAREN ;
-variable : VARIABLE ;
+variable : VARIABLE;
 matrix : LBRACKET matrixLine (';' matrixLine)* RBRACKET;
 matrixLine : expression ( ',' expression ) *;
 relop : EQ | GT | LT | GE | LE;
 addop : PLUS | MINUS ;
 mulop : TIMES | DIV ;
 powop : POW | SUBSCRIPT ;
-VARIABLE : VALID_ID_START VALID_ID_CHAR* | '...' ;
 
 STRING: '"' ~('"') * '"' ;
-fragment VALID_ID_START : ('a' .. 'z') | ('A' .. 'Z') ;
-fragment VALID_ID_CHAR : VALID_ID_START | ('0' .. '9') ;
-SCIENTIFIC_NUMBER : NUMBER (E SIGN? NUMBER)? ;
-
-//The integer part gets its potential sign from the value rule
-
-fragment NUMBER : ('0' .. '9') + ('.' ('0' .. '9') +)?  ;
-fragment E : 'E' | 'e' ;
-fragment SIGN : ('+' | '-') ;
 
 LPAREN : '(' ;
 RPAREN : ')' ;
@@ -100,4 +88,7 @@ SUBSCRIPT: '_' ;
 EOL : '\r\n' | '\n' ;
 WS : [ \t] + -> skip ; 
 
+fragment CHAR : ~([!+-<>=_^(){}[\] \t\r\n"*]) | [0123456789];
+VARIABLE: CHAR+;
+
 // vim: filetype=antlr
diff --git a/src/translator/math/Math.h b/src/translator/math/Math.h
index 23ed3ae..92e76b9 100644
--- a/src/translator/math/Math.h
+++ b/src/translator/math/Math.h
@@ -88,7 +88,6 @@ Draw Parse(MathParser::MatrixContext*, Style*);
 Draw Parse(MathParser::ValueBangContext* context, Style*, bool);
 Draw Parse(MathParser::ValueContext*, Style*, bool suppress_parenthesis);
 Draw Parse(MathParser::AtomContext*, Style*, bool suppress_parenthesis);
-Draw Parse(MathParser::ScientificContext*);
 Draw Parse(MathParser::VariableContext*, Style* style);
 Draw ComposeHorizontal(const Draw& left, const Draw& right, int spaces);
 Draw ComposeVertical(const Draw& top, const Draw& down, int spaces);
diff --git a/test/Math/variable/input b/test/Math/variable/input
index 6437a13..00de0e2 100644
--- a/test/Math/variable/input
+++ b/test/Math/variable/input
@@ -1 +1,9 @@
 variable
+
+f'(x)
+
+a123456789°à@çè|#~#&
+
+2_2m
+
+2é8fsdmoiuuç
diff --git a/test/Math/variable/output b/test/Math/variable/output
index 6437a13..86d7443 100644
--- a/test/Math/variable/output
+++ b/test/Math/variable/output
@@ -1 +1,10 @@
-variable
+variable            
+                    
+f'(x)               
+                    
+a123456789°à@çè|#~#&
+                    
+2                   
+ 2m                 
+                    
+2é8fsdmoiuuç