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Mirrors > Home > MPE Home > Th. List > Mathboxes > 0cnALT3 | Structured version Visualization version GIF version |
Description: Alternate proof of 0cn 10967 using ax-resscn 10928, ax-addrcl 10932, ax-rnegex 10942, ax-cnre 10944 instead of ax-icn 10930, ax-addcl 10931, ax-mulcl 10933, ax-i2m1 10939. Version of 0cnALT 11209 using ax-1cn 10929 instead of ax-icn 10930. (Contributed by Steven Nguyen, 7-Jan-2022.) (Proof modification is discouraged.) (New usage is discouraged.) |
Ref | Expression |
---|---|
0cnALT3 | ⊢ 0 ∈ ℂ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0re 10977 | . 2 ⊢ 0 ∈ ℝ | |
2 | 1 | recni 10989 | 1 ⊢ 0 ∈ ℂ |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2106 ℂcc 10869 0cc0 10871 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-ext 2709 ax-resscn 10928 ax-1cn 10929 ax-addrcl 10932 ax-rnegex 10942 ax-cnre 10944 |
This theorem depends on definitions: df-bi 206 df-an 397 df-tru 1542 df-ex 1783 df-sb 2068 df-clab 2716 df-cleq 2730 df-clel 2816 df-ral 3069 df-rex 3070 df-v 3434 df-in 3894 df-ss 3904 |
This theorem is referenced by: (None) |
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