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Definition df-div 7652
 Description: Define division. Theorem divmulap 7654 relates it to multiplication, and divclap 7657 and redivclap 7707 prove its closure laws. (Contributed by NM, 2-Feb-1995.) (Revised by Mario Carneiro, 1-Apr-2014.) (New usage is discouraged.)
Assertion
Ref Expression
df-div
Distinct variable group:   ,,

Detailed syntax breakdown of Definition df-div
StepHypRef Expression
1 cdiv 7651 . 2
2 vx . . 3
3 vy . . 3
4 cc 6887 . . 3
5 cc0 6889 . . . . 5
65csn 3375 . . . 4
74, 6cdif 2914 . . 3
83cv 1242 . . . . . 6
9 vz . . . . . . 7
109cv 1242 . . . . . 6
11 cmul 6894 . . . . . 6
128, 10, 11co 5512 . . . . 5
132cv 1242 . . . . 5
1412, 13wceq 1243 . . . 4
1514, 9, 4crio 5467 . . 3
162, 3, 4, 7, 15cmpt2 5514 . 2
171, 16wceq 1243 1
 Colors of variables: wff set class This definition is referenced by:  divvalap  7653  divfnzn  8556
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