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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 11129 | . 2 ⊢ i ∈ ℂ | |
| 2 | 1 | mulridi 11183 | 1 ⊢ (i · 1) = i |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1559 (class class class)co 7392 1c1 11071 ici 11072 · cmul 11075 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-ext 2733 ax-resscn 11127 ax-1cn 11128 ax-icn 11129 ax-addcl 11130 ax-mulcl 11132 ax-mulcom 11134 ax-mulass 11136 ax-distr 11137 ax-1rid 11140 ax-cnre 11143 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-sb 2090 df-clab 2740 df-cleq 2753 df-clel 2836 df-rex 3086 df-rab 3414 df-v 3455 df-dif 3907 df-un 3909 df-ss 3921 df-nul 4286 df-if 4480 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-br 5100 df-iota 6473 df-fv 6525 df-ov 7395 |
| This theorem is referenced by: (None) |
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