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Definition df-dif 3215
Description: Define the difference of two classes. See eldif 3221 for membership. (Contributed by SF, 10-Jan-2015.)
Assertion
Ref Expression
df-dif

Detailed syntax breakdown of Definition df-dif
StepHypRef Expression
1 cA . . 3
2 cB . . 3
31, 2cdif 3206 . 2
42ccompl 3205 . . 3
51, 4cin 3208 . 2
63, 5wceq 1642 1
Colors of variables: wff setvar class
This definition is referenced by:  eldif  3221  nfdif  3232  difeq1  3246  difeq2  3247  difsscompl  3549  compldif  4069  inindif  4075  difexg  4102  nnsucelrlem3  4426  ssfin  4470  sbthlem1  6203
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