Nuprl - Proof: indep fun extensional

(4steps total) PrintForm Definitions LogicSupplement Sections DiscrMathExt Doc

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Defintion of equality between functions.

At: indep fun extensional

A,B:Type, f,g:(A

B). f = g

(

x:A. f(x) = g(x))

By:

Auto

Generated subgoals:

1 1. A : Type
2. B : Type
3. f : AB
4. g : AB
5. f = g
6. x : A
f(x) = g(x)
1 step

2 1. A : Type
2. B : Type
3. f : AB
4. g : AB
5. x:A. f(x) = g(x)
f = g
2 steps

About:

IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

(4steps total) PrintForm Definitions LogicSupplement Sections DiscrMathExt Doc

1	1. A : Type 2. B : Type 3. f : AB 4. g : AB 5. f = g 6. x : A f(x) = g(x)	1 step
2	1. A : Type 2. B : Type 3. f : AB 4. g : AB 5. x:A. f(x) = g(x) f = g	2 steps