I'm trying out Coq, but I'm not completely sure what I'm doing. Is:
Theorem new_theorem : forall x, P:Prop /\ Q:Prop
Equivalent to:
Ax ( P(x) and Q(x) )
(where A is supposed to be the universal quantifier).
Edit: I think they are.
I'm trying out Coq, but I'm not completely sure what I'm doing. Is:
Theorem new_theorem : forall x, P:Prop /\ Q:Prop
Equivalent to:
Ax ( P(x) and Q(x) )
(where A is supposed to be the universal quantifier).
Edit: I think they are.
Are you having problems with the syntax?
$ coqtop
Welcome to Coq 8.1pl3 (Dec. 2007)
Coq < Section Test.
Coq < Variable X:Set.
X is assumed
Coq < Variables P Q:X -> Prop.
P is assumed
Q is assumed
Coq < Theorem forall_test: forall x:X, P(x) /\ Q(x).
1 subgoal
X : Set
P : X -> Prop
Q : X -> Prop
============================
forall x : X, P x /\ Q x
forall_test <
Well, to answer your question:
Section test.
Variable A : Type. (* assume some universe A *)
Variable P Q : A -> Prop. (* and two predicates over A, P and Q *)
Goal forall x, P x /\ Q x. (* Ax, ( P(x) and Q(x) ) *)
End test.