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| Mirrors > Home > MPE Home > Th. List > Mathboxes > it1ei | Structured version Visualization version GIF version | ||
| Description: i times 1 equals i. (Contributed by SN, 25-Apr-2025.) |
| Ref | Expression |
|---|---|
| it1ei | ⊢ (i · 1) = i |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-icn 11095 | . 2 ⊢ i ∈ ℂ | |
| 2 | 1 | mulridi 11147 | 1 ⊢ (i · 1) = i |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1547 (class class class)co 7363 1c1 11037 ici 11038 · cmul 11041 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2712 ax-resscn 11093 ax-1cn 11094 ax-icn 11095 ax-addcl 11096 ax-mulcl 11098 ax-mulcom 11100 ax-mulass 11102 ax-distr 11103 ax-1rid 11106 ax-cnre 11109 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-sb 2074 df-clab 2719 df-cleq 2732 df-clel 2815 df-rex 3065 df-rab 3393 df-v 3434 df-dif 3893 df-un 3895 df-ss 3907 df-nul 4269 df-if 4462 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4846 df-br 5080 df-iota 6448 df-fv 6500 df-ov 7366 |
| This theorem is referenced by: (None) |
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