Theorem elimph 28589

Description: Hypothesis elimination lemma for complex inner product spaces to assist weak deduction theorem. (Contributed by NM, 27-Apr-2007.) (New usage is discouraged.)

Hypotheses

Ref	Expression
elimph.1	⊢ 𝑋 = (BaseSet‘𝑈)
elimph.5	⊢ 𝑍 = (0vec‘𝑈)
elimph.6	⊢ 𝑈 ∈ CPreHilOLD

Assertion

Ref	Expression
elimph	⊢ if(𝐴 ∈ 𝑋, 𝐴, 𝑍) ∈ 𝑋

Proof of Theorem elimph

Step	Hyp	Ref	Expression
1		elimph.1	. 2 ⊢ 𝑋 = (BaseSet‘𝑈)
2		elimph.5	. 2 ⊢ 𝑍 = (0vec‘𝑈)
3		elimph.6	. . 3 ⊢ 𝑈 ∈ CPreHilOLD
4	3	phnvi 28585	. 2 ⊢ 𝑈 ∈ NrmCVec
5	1, 2, 4	elimnv 28452	1 ⊢ if(𝐴 ∈ 𝑋, 𝐴, 𝑍) ∈ 𝑋

Syntax hints:   = wceq 1531   ∈ wcel 2108  ifcif 4465  ‘cfv 6348  BaseSetcba 28355  0_veccn0v 28357  CPreHil_OLDccphlo 28581

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1790  ax-4 1804  ax-5 1905  ax-6 1964  ax-7 2009  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2154  ax-12 2170  ax-ext 2791  ax-rep 5181  ax-sep 5194  ax-nul 5201  ax-pow 5257  ax-pr 5320  ax-un 7453

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1084  df-tru 1534  df-ex 1775  df-nf 1779  df-sb 2064  df-mo 2616  df-eu 2648  df-clab 2798  df-cleq 2812  df-clel 2891  df-nfc 2961  df-ne 3015  df-ral 3141  df-rex 3142  df-reu 3143  df-rab 3145  df-v 3495  df-sbc 3771  df-csb 3882  df-dif 3937  df-un 3939  df-in 3941  df-ss 3950  df-nul 4290  df-if 4466  df-sn 4560  df-pr 4562  df-op 4566  df-uni 4831  df-iun 4912  df-br 5058  df-opab 5120  df-mpt 5138  df-id 5453  df-xp 5554  df-rel 5555  df-cnv 5556  df-co 5557  df-dm 5558  df-rn 5559  df-res 5560  df-ima 5561  df-iota 6307  df-fun 6350  df-fn 6351  df-f 6352  df-f1 6353  df-fo 6354  df-f1o 6355  df-fv 6356  df-riota 7106  df-ov 7151  df-oprab 7152  df-1st 7681  df-2nd 7682  df-grpo 28262  df-gid 28263  df-ablo 28314  df-vc 28328  df-nv 28361  df-va 28364  df-ba 28365  df-sm 28366  df-0v 28367  df-nmcv 28369  df-ph 28582

This theorem is referenced by:  ipdiri  28599  ipassi  28610  sii  28623