<?xml version="1.0" encoding="utf-8"?> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Maximal size for a horizontal arrow stretched by scaling</title> </head> <body> <table style="position: absolute;"> <tr align="center"> <td><div style="width: 200px; height: 5px; background: black"/></td> </tr> <tr align="center"> <td> <math xmlns="http://www.w3.org/1998/Math/MathML"> <munder accentunder="false"> <mspace width="100px" height="5px" style="background: yellow"/> <mo style="color: blue;">⇛</mo> </munder> </math> </td> </tr> </table> <table style="position: absolute;"> <tr align="center"> <td><div style="width: 200px; height: 5px; background: black"/></td> </tr> <tr align="center"> <td> <math xmlns="http://www.w3.org/1998/Math/MathML"> <munder accentunder="false"> <mspace width="100px" height="5px" style="background: yellow"/> <mspace width="110px" height="25px" depth="25px" style="background: red;"/> </munder> </math> </td> </tr> </table> </body> </html>