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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 31366 | . 2 ⊢ 0ℎ ∈ ℋ | |
| 2 | 1 | elimel 4556 | 1 ⊢ if(𝐴 ∈ ℋ, 𝐴, 0ℎ) ∈ ℋ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2142 ifcif 4486 ℋchba 31282 0ℎc0v 31287 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-ext 2734 ax-hv0cl 31366 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-ex 1809 df-sb 2096 df-clab 2741 df-cleq 2754 df-clel 2837 df-if 4487 |
| This theorem is used by: hvsubsub4 31423 hvnegdi 31430 hvsubeq0 31431 hvaddcan 31433 hvsubadd 31440 normlem9at 31484 normsq 31497 normsub0 31499 norm-ii 31501 norm-iii 31503 normsub 31506 normpyth 31508 norm3dif 31513 norm3lemt 31515 norm3adifi 31516 normpar 31518 polid 31522 bcs 31544 pjoc1 31797 pjoc2 31802 h1de2ci 31919 spansn 31922 elspansn 31929 elspansn2 31930 h1datom 31945 spansnj 32010 spansncv 32016 pjch1 32033 pjadji 32048 pjaddi 32049 pjinormi 32050 pjsubi 32051 pjmuli 32052 pjcjt2 32055 pjch 32057 pjopyth 32083 pjnorm 32087 pjpyth 32088 pjnel 32089 eigre 32198 eigorth 32201 lnopeq0lem2 32369 lnopunii 32375 lnophmi 32381 pjss2coi 32527 pjssmi 32528 pjssge0i 32529 pjdifnormi 32530 |
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