Update 'mathematics.md'

mathematics.md

@@ -18,6 +18,7 @@
 - [Duality (mathematics)](https://en.wikipedia.org/wiki/Duality_(mathematics))
 
 #### Tables
+- [Table of Irreducible polynomials over Galois Fields](http://fchabaud.free.fr/English/default.php?COUNT=1&FILE0=Poly)
 - [List of trigonometric identities](https://en.wikipedia.org/wiki/List_of_trigonometric_identities)
 - [List of LaTeX mathematical symbols](https://oeis.org/wiki/List_of_LaTeX_mathematical_symbols)