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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 (common case). (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 27244 | . 2 ⊢ 0ℎ ∈ ℋ | |
2 | 1 | elimel 4100 | 1 ⊢ if(𝐴 ∈ ℋ, 𝐴, 0ℎ) ∈ ℋ |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 1977 ifcif 4036 ℋchil 27160 0ℎc0v 27165 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-hv0cl 27244 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-if 4037 |
This theorem is referenced by: hvsubsub4 27301 hvnegdi 27308 hvsubeq0 27309 hvaddcan 27311 hvsubadd 27318 normlem9at 27362 normsq 27375 normsub0 27377 norm-ii 27379 norm-iii 27381 normsub 27384 normpyth 27386 norm3dif 27391 norm3lemt 27393 norm3adifi 27394 normpar 27396 polid 27400 bcs 27422 pjoc1 27677 pjoc2 27682 h1de2ci 27799 spansn 27802 elspansn 27809 elspansn2 27810 h1datom 27825 spansnj 27890 spansncv 27896 pjch1 27913 pjadji 27928 pjaddi 27929 pjinormi 27930 pjsubi 27931 pjmuli 27932 pjcjt2 27935 pjch 27937 pjopyth 27963 pjnorm 27967 pjpyth 27968 pjnel 27969 eigre 28078 eigorth 28081 lnopeq0lem2 28249 lnopunii 28255 lnophmi 28261 pjss2coi 28407 pjssmi 28408 pjssge0i 28409 pjdifnormi 28410 |
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