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| Mirrors > Home > MPE Home > Th. List > Mathboxes > 1tiei | Structured version Visualization version GIF version | ||
| Description: 1 times i equals i. (Contributed by SN, 25-Apr-2025.) |
| Ref | Expression |
|---|---|
| 1tiei | ⊢ (1 · i) = i |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-icn 11230 | . 2 ⊢ i ∈ ℂ | |
| 2 | 1 | mullidi 11285 | 1 ⊢ (1 · i) = i |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7408 1c1 11172 ici 11173 · cmul 11176 |
| 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 2732 ax-resscn 11228 ax-1cn 11229 ax-icn 11230 ax-addcl 11231 ax-mulcl 11233 ax-mulcom 11235 ax-mulass 11237 ax-distr 11238 ax-1rid 11241 ax-cnre 11244 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2739 df-cleq 2752 df-clel 2835 df-rex 3087 df-rab 3413 df-v 3452 df-dif 3901 df-un 3903 df-ss 3915 df-nul 4279 df-if 4482 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5103 df-iota 6483 df-fv 6535 df-ov 7411 |
| This theorem is used by: (None) |
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