| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > 1t1e1ALT | Structured version Visualization version GIF version | ||
| Description: Alternate proof of 1t1e1 12327 using a different set of axioms (add ax-mulrcl 11090, ax-i2m1 11095, ax-1ne0 11096, ax-rrecex 11099 and remove ax-resscn 11084, ax-mulcom 11091, ax-mulass 11093, ax-distr 11094). (Contributed by Steven Nguyen, 20-Sep-2022.) (Proof modification is discouraged.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| 1t1e1ALT | ⊢ (1 · 1) = 1 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1re 11133 | . 2 ⊢ 1 ∈ ℝ | |
| 2 | ax-1rid 11097 | . 2 ⊢ (1 ∈ ℝ → (1 · 1) = 1) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ (1 · 1) = 1 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ∈ wcel 2114 (class class class)co 7356 ℝcr 11026 1c1 11028 · cmul 11032 |
| 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 2707 ax-1cn 11085 ax-icn 11086 ax-addcl 11087 ax-mulcl 11089 ax-mulrcl 11090 ax-i2m1 11095 ax-1ne0 11096 ax-1rid 11097 ax-rrecex 11099 ax-cnre 11100 |
| 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 2714 df-cleq 2727 df-clel 2810 df-ne 2931 df-ral 3050 df-rex 3060 df-rab 3388 df-v 3429 df-dif 3888 df-un 3890 df-ss 3902 df-nul 4264 df-if 4457 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-br 5075 df-iota 6443 df-fv 6495 df-ov 7359 |
| This theorem is referenced by: nnmul1com 12223 remulinvcom 42853 sn-0tie0 42884 |
| Copyright terms: Public domain | W3C validator |