OK, thank you very much! I think I can do nothing but wait T.T
Still no news from Brown(applied math), NYU(math), CMU(math), Northeastern(Math). Some of these schools have already sent offers. Does it mean there is no hope if there is still no news up to now? It is Apr. 3rd. today. Are the schools waiting for other candidates to decline them? or they are waiting to send reject letters exactly at 415?