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Definition df-fm 17958
 Description: Define a function that takes a filter to a neighborhood filter of the range. (Since we now allow filter bases to have support smaller than the base set, the function has to come first to ensure that curryings are sets.) (Contributed by Jeff Hankins, 5-Sep-2009.) (Revised by Stefan O'Rear, 20-Jul-2015.)
Assertion
Ref Expression
df-fm
Distinct variable group:   ,,,

Detailed syntax breakdown of Definition df-fm
StepHypRef Expression
1 cfm 17953 . 2
2 vx . . 3
3 vf . . 3
4 cvv 2948 . . 3
5 vy . . . 4
63cv 1651 . . . . . 6
76cdm 4869 . . . . 5
8 cfbas 16677 . . . . 5
97, 8cfv 5445 . . . 4
102cv 1651 . . . . 5
11 vt . . . . . . 7
125cv 1651 . . . . . . 7
1311cv 1651 . . . . . . . 8
146, 13cima 4872 . . . . . . 7
1511, 12, 14cmpt 4258 . . . . . 6
1615crn 4870 . . . . 5
17 cfg 16678 . . . . 5
1810, 16, 17co 6072 . . . 4
195, 9, 18cmpt 4258 . . 3
202, 3, 4, 4, 19cmpt2 6074 . 2
211, 20wceq 1652 1
 Colors of variables: wff set class This definition is referenced by:  fmval  17963  fmf  17965
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