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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 28786 | . 2 ⊢ 0ℎ ∈ ℋ | |
2 | 1 | elimel 4492 | 1 ⊢ if(𝐴 ∈ ℋ, 𝐴, 0ℎ) ∈ ℋ |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2111 ifcif 4425 ℋchba 28702 0ℎc0v 28707 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-ext 2770 ax-hv0cl 28786 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-ex 1782 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-if 4426 |
This theorem is referenced by: hvsubsub4 28843 hvnegdi 28850 hvsubeq0 28851 hvaddcan 28853 hvsubadd 28860 normlem9at 28904 normsq 28917 normsub0 28919 norm-ii 28921 norm-iii 28923 normsub 28926 normpyth 28928 norm3dif 28933 norm3lemt 28935 norm3adifi 28936 normpar 28938 polid 28942 bcs 28964 pjoc1 29217 pjoc2 29222 h1de2ci 29339 spansn 29342 elspansn 29349 elspansn2 29350 h1datom 29365 spansnj 29430 spansncv 29436 pjch1 29453 pjadji 29468 pjaddi 29469 pjinormi 29470 pjsubi 29471 pjmuli 29472 pjcjt2 29475 pjch 29477 pjopyth 29503 pjnorm 29507 pjpyth 29508 pjnel 29509 eigre 29618 eigorth 29621 lnopeq0lem2 29789 lnopunii 29795 lnophmi 29801 pjss2coi 29947 pjssmi 29948 pjssge0i 29949 pjdifnormi 29950 |
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