Update 'README.md'

README.md

@@ -88,6 +88,7 @@ ___
 - [Rice's Theorem](https://en.wikipedia.org/wiki/Rice%27s_theorem)
 - [Seven habits of effective text editing - Bram Moolenaar](https://www.moolenaar.net/habits.html)
 - [Ladner's Theorem](https://en.wikipedia.org/wiki/NP-intermediate)
+- [Holevo's Theorem](https://en.wikipedia.org/wiki/Holevo%27s_theorem)
 
 
 ## [Mathematics and Theoretical Computer Science](mathematics.md)