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| Mirrors > Home > HSE Home > Th. List > chne0i | Structured version Visualization version GIF version | ||
| Description: A nonzero closed subspace has a nonzero vector. (Contributed by NM, 25-Feb-2006.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| ch0le.1 | ⊢ 𝐴 ∈ Cℋ |
| Ref | Expression |
|---|---|
| chne0i | ⊢ (𝐴 ≠ 0ℋ ↔ ∃𝑥 ∈ 𝐴 𝑥 ≠ 0ℎ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ch0le.1 | . . 3 ⊢ 𝐴 ∈ Cℋ | |
| 2 | 1 | chshii 31590 | . 2 ⊢ 𝐴 ∈ Sℋ |
| 3 | 2 | shne0i 31811 | 1 ⊢ (𝐴 ≠ 0ℋ ↔ ∃𝑥 ∈ 𝐴 𝑥 ≠ 0ℎ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ↔ wb 209 ∈ wcel 2142 ≠ wne 2957 ∃wrex 3088 0ℎc0v 31287 Cℋ cch 31292 0ℋc0h 31298 |
| 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-sep 5256 ax-hilex 31362 ax-hv0cl 31366 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-sb 2096 df-clab 2741 df-cleq 2754 df-clel 2837 df-ne 2958 df-rex 3089 df-rab 3416 df-v 3456 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-br 5109 df-opab 5173 df-xp 5666 df-cnv 5668 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-iota 6492 df-fv 6544 df-ov 7415 df-sh 31570 df-ch 31584 df-ch0 31616 |
| This theorem is used by: chne0 31857 hne0 31910 h1datomi 31944 riesz3i 32425 pjnmopi 32511 |
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