acknowledge

verb

1. declare to be true or admit the existence or reality or truth of"He admitted his errors"
2. report the receipt of"The program committee acknowledged the submission of the authors of the paper"
3. express recognition of the presence or existence of, or acquaintance with"He never acknowledges his colleagues when they run into him in the hallway"
4. express obligation, thanks, or gratitude for"We must acknowledge the kindness she showed towards us"
5. accept as legally binding and valid"acknowledge the deed"
6. accept (someone) to be what is claimed or accept their power and authority"The Crown Prince was acknowledged as the true heir to the throne"