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Definition df-9 10626
Description: Define the number 9. (Contributed by NM, 27-May-1999.)
Assertion
Ref Expression
df-9

Detailed syntax breakdown of Definition df-9
StepHypRef Expression
1 c9 10617 . 2
2 c8 10616 . . 3
3 c1 9514 . . 3
4 caddc 9516 . . 3
52, 3, 4co 6296 . 2
61, 5wceq 1395 1
Colors of variables: wff setvar class
This definition is referenced by:  9re  10647  9pos  10662  8p1e9  10691  5p4e9  10700  6p3e9  10703  7p2e9  10705  8p2e10  10707  9nn  10725  8lt9  10755  9p9e18  11073  9t9e81  11106  19prm  14603  139prm  14609  log2tlbnd  23276  bposlem8  23566  lgsdir2lem5  23602  rmydioph  30956
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