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Mirrors > Home > MPE Home > Th. List > 9cn | Structured version Visualization version GIF version |
Description: The number 9 is complex. (Contributed by David A. Wheeler, 8-Dec-2018.) |
Ref | Expression |
---|---|
9cn | ⊢ 9 ∈ ℂ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 9re 10984 | . 2 ⊢ 9 ∈ ℝ | |
2 | 1 | recni 9931 | 1 ⊢ 9 ∈ ℂ |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 1977 ℂcc 9813 9c9 10954 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-i2m1 9883 ax-1ne0 9884 ax-rrecex 9887 ax-cnre 9888 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-iota 5768 df-fv 5812 df-ov 6552 df-2 10956 df-3 10957 df-4 10958 df-5 10959 df-6 10960 df-7 10961 df-8 10962 df-9 10963 |
This theorem is referenced by: 10m1e9 11506 9t2e18 11539 9t8e72 11545 9t9e81 11546 9t11e99 11547 9t11e99OLD 11548 0.999... 14451 0.999...OLD 14452 cos2bnd 14757 3dvds 14890 3dvdsOLD 14891 3dvdsdec 14892 3dvdsdecOLD 14893 3dvds2dec 14894 3dvds2decOLD 14895 2exp8 15634 139prm 15669 163prm 15670 317prm 15671 631prm 15672 1259lem1 15676 1259lem2 15677 1259lem3 15678 1259lem4 15679 1259lem5 15680 2503lem1 15682 2503lem2 15683 2503lem3 15684 2503prm 15685 4001lem1 15686 4001lem2 15687 4001lem3 15688 4001lem4 15689 mcubic 24374 cubic2 24375 cubic 24376 quartlem1 24384 log2tlbnd 24472 log2ublem3 24475 log2ub 24476 bposlem8 24816 ex-lcm 26707 fmtno5lem4 40006 257prm 40011 fmtno4nprmfac193 40024 139prmALT 40049 127prm 40053 evengpop3 40214 |
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