If you can do this: 

perl -Mutf8 -wle 'use constant π=>3.141;use overload "sqrt"=>\&sr;sub sr{sqrt shift}print sr π'
1.77228665852903
This seems reasonable: 
perl -Mutf8 -wle 'use constant π=>3.141;use overload "sqrt"=>\&√;sub √{sqrt shift}print √π'    
Unrecognized character \x{221a}

In reply to Re^6: Unicode infinity by Anonymous Monk
in thread Unicode infinity by NERDVANA

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