Please, tell me I haven't lost it yet. octave:14> -5^4 ans = -625 Since when does an even power of a negative number give a negative result? $ rpm -q octave octave-2.9.9-1.fc6 -- select 'mmarques' || '@' || 'unl.edu.ar' AS email; --------------------------------------------------------- Martín Marqués | Programador, DBA Centro de Telemática | Administrador Universidad Nacional del Litoral ---------------------------------------------------------