== Help == 
 Hi, 
   You left me a message: 
 Please don't remove links, such as you have been doing with reciprocity law. It is not a constructive approach. I am going to rollback. 

 The problem is that [reciprocity law] used to redirect straight to [Quadratic reciprocity].  But in photography and holography there is also a reciprocity law.  I turned the redirect into a disambiguation page, but noticed there was 4 or 5 pages math page that pointed to it.  I went to each one, and in all the cases they had a link to [quadratic reciprocity] and to [reciprocity law].  I have no idea what the reciprocity law in math is, and didn't want to attempt to do a write up on it, and I didn't want to leave it pointing to the disambiguation page, so i removed the link. 

 What would your suggestion in the future be? 

 Thanks for your time