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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 11132 | . 2 ⊢ i ∈ ℂ | |
| 2 | 1 | mullidi 11187 | 1 ⊢ (1 · i) = i |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1560 (class class class)co 7396 1c1 11074 ici 11075 · cmul 11078 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-ext 2734 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-mulcl 11135 ax-mulcom 11137 ax-mulass 11139 ax-distr 11140 ax-1rid 11143 ax-cnre 11146 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-sb 2091 df-clab 2741 df-cleq 2754 df-clel 2837 df-rex 3087 df-rab 3415 df-v 3456 df-dif 3907 df-un 3909 df-ss 3921 df-nul 4286 df-if 4481 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-iota 6477 df-fv 6529 df-ov 7399 |
| This theorem is referenced by: (None) |
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