Theorem blfps 20994

Description: Mapping of a ball. (Contributed by NM, 7-May-2007.) (Revised by Mario Carneiro, 23-Aug-2015.) (Revised by Thierry Arnoux, 11-Mar-2018.)

Assertion

Ref	Expression
blfps	|- ( D e. (PsMet ` X ) -> ( ball ` D ) : ( X X. RR* ) --> ~P X )

Proof of Theorem blfps

Dummy variables x r y are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		ssrab2 3499	. . . . . 6 |- { y e. X | ( x D y ) < r } C_ X
2		elfvdm 5800	. . . . . . 7 |- ( D e. (PsMet ` X ) -> X e. dom PsMet )
3		elpw2g 4528	. . . . . . 7 |- ( X e. dom PsMet -> ( { y e. X | ( x D y ) < r } e. ~P X <-> { y e. X | ( x D y ) < r } C_ X ) )
4	2, 3	syl 16	. . . . . 6 |- ( D e. (PsMet ` X ) -> ( { y e. X | ( x D y ) < r } e. ~P X <-> { y e. X | ( x D y ) < r } C_ X ) )
5	1, 4	mpbiri 233	. . . . 5 |- ( D e. (PsMet ` X ) -> { y e. X | ( x D y ) < r } e. ~P X )
6	5	a1d 25	. . . 4 |- ( D e. (PsMet ` X ) -> ( ( x e. X /\ r e. RR* ) -> { y e. X | ( x D y ) < r } e. ~P X ) )
7	6	ralrimivv 2802	. . 3 |- ( D e. (PsMet ` X ) -> A. x e. X A. r e. RR* { y e. X | ( x D y ) < r } e. ~P X )
8		eqid 2382	. . . 4 |- ( x e. X , r e. RR* |-> { y e. X | ( x D y ) < r } ) = ( x e. X , r e. RR* |-> { y e. X | ( x D y ) < r } )
9	8	fmpt2 6766	. . 3 |- ( A. x e. X A. r e. RR* { y e. X | ( x D y ) < r } e. ~P X <-> ( x e. X , r e. RR* |-> { y e. X | ( x D y ) < r } ) : ( X X. RR* ) --> ~P X )
10	7, 9	sylib 196	. 2 |- ( D e. (PsMet ` X ) -> ( x e. X , r e. RR* |-> { y e. X | ( x D y ) < r } ) : ( X X. RR* ) --> ~P X )
11		blfvalps 20971	. . 3 |- ( D e. (PsMet ` X ) -> ( ball ` D ) = ( x e. X , r e. RR* |-> { y e. X | ( x D y ) < r } ) )
12	11	feq1d 5625	. 2 |- ( D e. (PsMet ` X ) -> ( ( ball ` D ) : ( X X. RR* ) --> ~P X <-> ( x e. X , r e. RR* |-> { y e. X | ( x D y ) < r } ) : ( X X. RR* ) --> ~P X ) )
13	10, 12	mpbird 232	1 |- ( D e. (PsMet ` X ) -> ( ball ` D ) : ( X X. RR* ) --> ~P X )

Syntax hints:   -> wi 4   <-> wb 184   /\ wa 367   e. wcel 1826   A.wral 2732   {crab 2736   C_ wss 3389   ~Pcpw 3927   class class class wbr 4367   X. cxp 4911   dom cdm 4913   -->wf 5492   ` cfv 5496  (class class class)co 6196   |-> cmpt2 6198   RR*cxr 9538   < clt 9539  PsMetcpsmet 18515   ballcbl 18518

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1626  ax-4 1639  ax-5 1712  ax-6 1755  ax-7 1798  ax-8 1828  ax-9 1830  ax-10 1845  ax-11 1850  ax-12 1862  ax-13 2006  ax-ext 2360  ax-sep 4488  ax-nul 4496  ax-pow 4543  ax-pr 4601  ax-un 6491  ax-cnex 9459  ax-resscn 9460

This theorem depends on definitions:  df-bi 185  df-or 368  df-an 369  df-3an 973  df-tru 1402  df-ex 1621  df-nf 1625  df-sb 1748  df-eu 2222  df-mo 2223  df-clab 2368  df-cleq 2374  df-clel 2377  df-nfc 2532  df-ne 2579  df-ral 2737  df-rex 2738  df-rab 2741  df-v 3036  df-sbc 3253  df-csb 3349  df-dif 3392  df-un 3394  df-in 3396  df-ss 3403  df-nul 3712  df-if 3858  df-pw 3929  df-sn 3945  df-pr 3947  df-op 3951  df-uni 4164  df-iun 4245  df-br 4368  df-opab 4426  df-mpt 4427  df-id 4709  df-xp 4919  df-rel 4920  df-cnv 4921  df-co 4922  df-dm 4923  df-rn 4924  df-res 4925  df-ima 4926  df-iota 5460  df-fun 5498  df-fn 5499  df-f 5500  df-fv 5504  df-ov 6199  df-oprab 6200  df-mpt2 6201  df-1st 6699  df-2nd 6700  df-map 7340  df-xr 9543  df-psmet 18524  df-bl 18527

This theorem is referenced by:  blrnps  20996  blelrnps  21004  unirnblps  21007