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At: absval mul 2 1
1. a:
2. b:
3. a = 0
4. b = 0
|a0| = |a||0|
By:
Subst (a0 = 0) 0
THEN
Subst (|0| = 0) 0
THEN
Unfold `absval` 0
THEN
Reduce 0
Generated subgoals:

None

About:
intnatural_numbermultiplyequal

(9steps total) PrintForm Definitions Lemmas graph 1 1 Sections Graphs Doc