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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 31485 | . 2 ⊢ 0ℎ ∈ ℋ | |
| 2 | 1 | elimel 4555 | 1 ⊢ if(𝐴 ∈ ℋ, 𝐴, 0ℎ) ∈ ℋ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2145 ifcif 4485 ℋchba 31401 0ℎc0v 31406 |
| 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 2734 ax-hv0cl 31485 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-ex 1813 df-sb 2100 df-clab 2741 df-cleq 2754 df-clel 2837 df-if 4486 |
| This theorem is used by: hvsubsub4 31542 hvnegdi 31549 hvsubeq0 31550 hvaddcan 31552 hvsubadd 31559 normlem9at 31603 normsq 31616 normsub0 31618 norm-ii 31620 norm-iii 31622 normsub 31625 normpyth 31627 norm3dif 31632 norm3lemt 31634 norm3adifi 31635 normpar 31637 polid 31641 bcs 31663 pjoc1 31916 pjoc2 31921 h1de2ci 32038 spansn 32041 elspansn 32048 elspansn2 32049 h1datom 32064 spansnj 32129 spansncv 32135 pjch1 32152 pjadji 32167 pjaddi 32168 pjinormi 32169 pjsubi 32170 pjmuli 32171 pjcjt2 32174 pjch 32176 pjopyth 32202 pjnorm 32206 pjpyth 32207 pjnel 32208 eigre 32317 eigorth 32320 lnopeq0lem2 32488 lnopunii 32494 lnophmi 32500 pjss2coi 32646 pjssmi 32647 pjssge0i 32648 pjdifnormi 32649 |
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