add math prerequisties

content/from-0-to-crypto-by-projects/episode-1-introduction.md

@@ -9,6 +9,10 @@ draft: false
 
 In cryptography, there are mathematics but in a very different way than school. Not because it sounds more concreet at all. But because it is about to break theorems (disproof).
 
+Contrary to memory error issues as any flaw in cyber security, you must have math theorem proving prerequisties.
+
+If you would like to seriously professionally work in cryptography, you mandatorely need to have these prerequisties.
+
 - step 1: math to proove theorems: 
   - 1: [book fo proof](https://www.people.vcu.edu/~rhammack/BookOfProof/Main.pdf)
   - 2: or the book: [how to proove it](https://www.amazon.com/How-Prove-Structured-Daniel-Velleman/dp/1108439535/ref=sr_1_1?crid=1G289WGWAXA57&keywords=how+to+prove+it&qid=1685799138&s=books&sprefix=how+to+prov%2Cstripbooks-intl-ship%2C864&sr=1-1) if you prefer. Be carefull: the second book is not free and corrections are only available by third party.