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At: equivalence symmetric 1 1

1. T: Type
2. eq: {T}
3. eq TT
4. x:T. eq(x,x)
5. x,y:T. eq(x,y) eq(y,x)
6. x,y,z:T. eq(x,y) eq(y,z) eq(x,z)
7. x: T
8. y: T

eq(x,y) eq(y,x)

By: HypBackchain

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boolassertapplyfunctionuniversememberimpliesall

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