When I write 'Print Qeq_trans.' in the CoqIde, I can see many 'eq^~' expressions in message window.
For example, eq^~ (Qnum z * QDen x * QDen y)%Z.
Please let me know the meaning of this term.
I think it is a way to apply a function to only its second argument. Do a
Locate "_ ^~ _".
to get the definition.