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Definition df-10OLD 11072
Description: Define the number 10. See remarks under df-2 11064. (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 11063 . 2 class 10
2 c9 11062 . . 3 class 9
3 c1 9922 . . 3 class 1
4 caddc 9924 . . 3 class +
52, 3, 4co 6635 . 2 class (9 + 1)
61, 5wceq 1481 1 wff 10 = (9 + 1)
Colors of variables: wff setvar class
This definition is referenced by:  10reOLD  11094  10posOLD  11108  9p1e10OLD  11144  5p5e10OLD  11153  6p4e10OLD  11156  7p3e10OLD  11158  8p2e10OLD  11159  10nnOLD  11178  9lt10OLD  11215  decsuccOLD  11536  9p2e11OLD  11605  0.999...OLD  14594  3dvdsOLD  15034  3dvdsdecOLD  15036  3dvds2decOLD  15038
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