src/HOL/Hyperreal/NthRoot.thy
changeset 15140 322485b816ac
parent 15131 c69542757a4d
child 16775 c1b87ef4a1c3
equal deleted inserted replaced
15139:58cd3404cf75 15140:322485b816ac
     5 *)
     5 *)
     6 
     6 
     7 header{*Existence of Nth Root*}
     7 header{*Existence of Nth Root*}
     8 
     8 
     9 theory NthRoot
     9 theory NthRoot
    10 import SEQ HSeries
    10 imports SEQ HSeries
    11 begin
    11 begin
    12 
    12 
    13 text {*
    13 text {*
    14   Various lemmas needed for this result. We follow the proof given by
    14   Various lemmas needed for this result. We follow the proof given by
    15   John Lindsay Orr (\texttt{jorr@math.unl.edu}) in his Analysis
    15   John Lindsay Orr (\texttt{jorr@math.unl.edu}) in his Analysis