Remove the spaces from the following sentence: The first is that analytic number theory is not restricted to asymptotic formulas and estimates but that it has another side which is concerned with the derivation of identities, the use of group theoretical arguments, etc.
Thefirstisthatanalyticnumbertheoryisnotrestrictedtoasymptoticformulasandestimatesbutthatithasanothersidewhichisconcernedwiththederivationofidentities,theuseofgrouptheoreticalarguments,etc.