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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 11091 | . 2 ⊢ i ∈ ℂ | |
| 2 | 1 | mullidi 11144 | 1 ⊢ (1 · i) = i |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 (class class class)co 7361 1c1 11033 ici 11034 · cmul 11037 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 ax-resscn 11089 ax-1cn 11090 ax-icn 11091 ax-addcl 11092 ax-mulcl 11094 ax-mulcom 11096 ax-mulass 11098 ax-distr 11099 ax-1rid 11102 ax-cnre 11105 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-rex 3063 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-iota 6449 df-fv 6501 df-ov 7364 |
| This theorem is referenced by: (None) |
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