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| Mirrors > Home > HSE Home > Th. List > ifhvhv0 | Structured version Visualization version GIF version | ||
| Description: Prove if(𝐴 ∈ ℋ, 𝐴, 0ℎ) ∈ ℋ. (Contributed by David A. Wheeler, 7-Dec-2018.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| ifhvhv0 | ⊢ if(𝐴 ∈ ℋ, 𝐴, 0ℎ) ∈ ℋ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-hv0cl 30990 | . 2 ⊢ 0ℎ ∈ ℋ | |
| 2 | 1 | elimel 4544 | 1 ⊢ if(𝐴 ∈ ℋ, 𝐴, 0ℎ) ∈ ℋ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2111 ifcif 4474 ℋchba 30906 0ℎc0v 30911 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-ext 2703 ax-hv0cl 30990 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-ex 1781 df-sb 2068 df-clab 2710 df-cleq 2723 df-clel 2806 df-if 4475 |
| This theorem is referenced by: hvsubsub4 31047 hvnegdi 31054 hvsubeq0 31055 hvaddcan 31057 hvsubadd 31064 normlem9at 31108 normsq 31121 normsub0 31123 norm-ii 31125 norm-iii 31127 normsub 31130 normpyth 31132 norm3dif 31137 norm3lemt 31139 norm3adifi 31140 normpar 31142 polid 31146 bcs 31168 pjoc1 31421 pjoc2 31426 h1de2ci 31543 spansn 31546 elspansn 31553 elspansn2 31554 h1datom 31569 spansnj 31634 spansncv 31640 pjch1 31657 pjadji 31672 pjaddi 31673 pjinormi 31674 pjsubi 31675 pjmuli 31676 pjcjt2 31679 pjch 31681 pjopyth 31707 pjnorm 31711 pjpyth 31712 pjnel 31713 eigre 31822 eigorth 31825 lnopeq0lem2 31993 lnopunii 31999 lnophmi 32005 pjss2coi 32151 pjssmi 32152 pjssge0i 32153 pjdifnormi 32154 |
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