Many of the documents I need for research use the following fonts for displaying math equations:
CharterBT
MathDesignCH
Where to get it from? If it is not free, is there any alternative free fonts that would work?
Many of the documents I need for research use the following fonts for displaying math equations:
Where to get it from? If it is not free, is there any alternative free fonts that would work? 


STIX Fonts is a free font designed for science and mathematics. 

