[quote]Prince wrote:
Modus Ponendo Ponens

http://www.informatik.htw-dresden.de...ons/rule7.html

Modus Tollendo Tollens

http://www.informatik.htw-dresden.de/~logic/conclusions/rule8.html</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR></TD></TR></TABLE>

See also

http://www.informatik.htw-dresden.de...ons/intro.html

nr. 3.

<font size=-1>[ This Message was edited by: informant on 2002-06-01 10:16 ]</font>