(45steps) PrintForm Definitions formula equality Sections ClassicalProps(jlc) Doc

At: discrete Formula with rank 1 2 1 1 1
1. x: Formula
2. x1: Formula
3. y@0: Formula
4. x2: Formula
5. Dec(x1 = x2)

Dec(x1 = x2)
By: Analyze -1
Generated subgoals:

15. x1 = x2
Dec(x1 = x2)
25. x1 = x2
Dec(x1 = x2)

About:
decidableequal

(45steps) PrintForm Definitions formula equality Sections ClassicalProps(jlc) Doc