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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 31539 | . 2 ⊢ 0ℎ ∈ ℋ | |
| 2 | 1 | elimel 4551 | 1 ⊢ if(𝐴 ∈ ℋ, 𝐴, 0ℎ) ∈ ℋ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2145 ifcif 4481 ℋchba 31455 0ℎc0v 31460 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2732 ax-hv0cl 31539 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-ex 1813 df-sb 2100 df-clab 2739 df-cleq 2752 df-clel 2835 df-if 4482 |
| This theorem is used by: hvsubsub4 31596 hvnegdi 31603 hvsubeq0 31604 hvaddcan 31606 hvsubadd 31613 normlem9at 31657 normsq 31670 normsub0 31672 norm-ii 31674 norm-iii 31676 normsub 31679 normpyth 31681 norm3dif 31686 norm3lemt 31688 norm3adifi 31689 normpar 31691 polid 31695 bcs 31717 pjoc1 31970 pjoc2 31975 h1de2ci 32092 spansn 32095 elspansn 32102 elspansn2 32103 h1datom 32118 spansnj 32183 spansncv 32189 pjch1 32206 pjadji 32221 pjaddi 32222 pjinormi 32223 pjsubi 32224 pjmuli 32225 pjcjt2 32228 pjch 32230 pjopyth 32256 pjnorm 32260 pjpyth 32261 pjnel 32262 eigre 32371 eigorth 32374 lnopeq0lem2 32542 lnopunii 32548 lnophmi 32554 pjss2coi 32700 pjssmi 32701 pjssge0i 32702 pjdifnormi 32703 |
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