SUMMARY OF THE CASE
I have the following achievements :
1.founder of 2 Theorems in Mathematics (please see willaadriantheorems.blogspot.com)
2.founder of bilingual Mathematics in Indonesia (please see https://sites.google.com/site/matematikabilingual) that makes education system in Indonesia has International atmosphere.
The books offered on this website are really valuable because of the following reasons.
-already tested well in real market. Anual royalty around Rp150 million (see lampiran and tax note)
-published 2 mathematics theorems I found
-historical, the first Indonesia-English bilingual mathematics lesson books in the world
-contain perhaps nearly all mathematics shortcut taught at colleges in Indonesia
-contain how to make shortcuts
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