Open jvoight opened 5 years ago
@juanitaduquer I think you've implemented this, so can we close this issue?
Restriction to the diagonal is the only one that is implemented. I am working on extending this to HZ-divisors, so maybe we can wait until that is done?
Given an HMF over F, you can restrict that HMF to another HMF over any subfield F_0; for example, you can restrict an HMF over a real quadratic field to get a classical modular form (over QQ). [Sam Tripp is restricting Siegel modular forms to get HMFs, so we might as well continue!] This is a very good sanity check for various computations, because I think it is even a ring homomorphism!