To Whom This May Concern,  
My name is [private]. I am the [private] at Takedown Czar (http://www.takedownczar.com).  
We provide anti-piracy and Intellectual Property protection services for the following client(s) and have been authorized to act on their behalf to resolve this matter.  
To confirm our relationship with our client(s) and for confirmation that we are acting with their permission you can contact our client directly at:  
Siam Books - 3600 Market St., 6th Floor, Philadelphia, PA 19104-2688, USA  
It has come to our attention that github.com is hosting illegally distributed copyrighted copies of our client('s) copyrighted product(s):
Numerical Linear Algebra - http://bookstore.siam.org/  
We have provided an example of work for you to verify that the products in question are the lawful property of our client(s).
The specific link(s) which are in direct violation of DMCA law are:  
https://github.com/gorobaum/gorobaumhome/blob/master/300/Numerical%20Linear%20Algebra%20-%20LIoyd%20N.%20Trefethen%20and%20David%20Bau.pdf  
I have a good faith belief that use of the afore mentioned material is not authorized by the copyright owner, its agents, or the law.  
I swear, under penalty of perjury, that the information in this notification is accurate and I am fully authorized to act on behalf of the owner of an exclusive right that is allegedly infringed.  
As a result, this letter is an official notification to request removal the offending link(s) from your website immediately.
I trust you will take immediate action to resolve this issue and request that you contact me at the e-mail [private] within 24 - 48 hours to let me know the actions you have taken to resolve this matter.  
Thank you for your assistance and I look forward to hearing from you soon.  
Regards,    
[private]      
Signed on this day, 2/10/2017  
For more information, contact:    
14 Floor China Hong Kong Tower, 8 Henessy Road; Hong Kong, Wanchai  
TEL: [private]    
EMAIL: [private]  
