There is problem with the Radaee PDF, the library and also the Android Market(Google Play store) application is able to read/draw the complex mathematical signs
See the screenshot below
1) this is from the PDF reader we have integrated in our application,
we have purchased professional licence for our product
2)this is from the Radaee PDF application
Whereas in Adobe Reader Android Native App it is
Please fix the bug/issue, If any clarity is needed please let it be know, cause the product is close to release, Please provide feedback ASAP