At: equiv rel fun 1 1 1 1
1. T: Type
2. E: T
T


3. s: T
4. t: T
5. Refl(T;x,y.x E y)
6.
a,b:T. (a E b) 
(b E a)
7.
a,b,c:T. (a E b) 
(b E c) 
(a E c)
8. s E t
9. x: T
E(s,x) 
E(t,x)
By:
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THEN
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Generated subgoals:1 | 10. E(s,x) E(t,x) |
2 | 10. E(t,x) E(s,x) |
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