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Definition df-10OLD 10931
Description: Define the number 10. See remarks under df-2 10923. (Contributed by NM, 5-Feb-2007.) Obsolete as of 9-Sep-2021. (New usage is discouraged.)
Assertion
Ref Expression
df-10OLD 10 = (9 + 1)

Detailed syntax breakdown of Definition df-10OLD
StepHypRef Expression
1 c10 10922 . 2 class 10
2 c9 10921 . . 3 class 9
3 c1 9790 . . 3 class 1
4 caddc 9792 . . 3 class +
52, 3, 4co 6524 . 2 class (9 + 1)
61, 5wceq 1474 1 wff 10 = (9 + 1)
Colors of variables: wff setvar class
This definition is referenced by:  10reOLD  10953  10posOLD  10967  9p1e10OLD  11003  5p5e10OLD  11012  6p4e10OLD  11015  7p3e10OLD  11017  8p2e10OLD  11018  10nnOLD  11037  9lt10OLD  11074  decsuccOLD  11380  9p2e11OLD  11449  0.999...OLD  14395  3dvdsOLD  14834  3dvdsdecOLD  14836  3dvds2decOLD  14838
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