D H said:
Prefix notation, also known as Polish notation (in honor of Jan Łukasiewicz).
Thank you for the information. And did I write these formulas correctly in Polish notation?
1)
((¬p)=>(q v (¬s))) (Standard notation)
(¬p)=>(q v (¬s))
=>(¬p)(q v ¬s)
=>¬pvq¬s (Polish notation)
?
2)
p v ((q [itex]\land[/itex] (¬s)) => p)) (Standard notation)
v p(q [itex]\land[/itex] (¬s)) => p)
v p => (q [itex]\land[/itex] (¬s))
v p => [itex]\land[/itex] q ¬s (Polish notation)
Also did I write these one correctly: (From Polish to Standard notation)
1)
v¬[itex]\land[/itex]vpqrs
v¬[itex]\land[/itex]p v qrs
v¬((p v q) [itex]\land[/itex] r)s
¬((p v q) [itex]\land[/itex] r) v s
2)
[itex]\land[/itex]p¬=>¬qvrs
[itex]\land[/itex]p¬=>¬q(r v s)
[itex]\land[/itex]p¬((¬q) => (r v s))
(p [itex]\land[/itex] (¬((¬q) => (r v s))))