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Mirrors > Home > MPE Home > Th. List > 8cn | Structured version Visualization version GIF version |
Description: The number 8 is a complex number. (Contributed by David A. Wheeler, 8-Dec-2018.) Reduce dependencies on axioms. (Revised by Steven Nguyen, 4-Oct-2022.) |
Ref | Expression |
---|---|
8cn | ⊢ 8 ∈ ℂ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-8 11864 | . 2 ⊢ 8 = (7 + 1) | |
2 | 7cn 11889 | . . 3 ⊢ 7 ∈ ℂ | |
3 | ax-1cn 10752 | . . 3 ⊢ 1 ∈ ℂ | |
4 | 2, 3 | addcli 10804 | . 2 ⊢ (7 + 1) ∈ ℂ |
5 | 1, 4 | eqeltri 2827 | 1 ⊢ 8 ∈ ℂ |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2112 (class class class)co 7191 ℂcc 10692 1c1 10695 + caddc 10697 7c7 11855 8c8 11856 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-ext 2708 ax-1cn 10752 ax-addcl 10754 |
This theorem depends on definitions: df-bi 210 df-an 400 df-ex 1788 df-cleq 2728 df-clel 2809 df-2 11858 df-3 11859 df-4 11860 df-5 11861 df-6 11862 df-7 11863 df-8 11864 |
This theorem is referenced by: 9cn 11895 9m1e8 11929 8p2e10 12338 8t2e16 12373 8t5e40 12376 cos2bnd 15712 2exp11 16606 2exp16 16607 139prm 16640 163prm 16641 317prm 16642 631prm 16643 1259lem2 16648 1259lem3 16649 1259lem4 16650 1259lem5 16651 2503lem2 16654 2503lem3 16655 2503prm 16656 4001lem1 16657 4001lem2 16658 4001prm 16661 quart1cl 25691 quart1lem 25692 quart1 25693 quartlem1 25694 log2tlbnd 25782 log2ublem3 25785 log2ub 25786 bposlem8 26126 lgsdir2lem1 26160 lgsdir2lem5 26164 2lgslem3a 26231 2lgslem3b 26232 2lgslem3c 26233 2lgslem3d 26234 2lgslem3a1 26235 2lgslem3b1 26236 2lgslem3c1 26237 2lgslem3d1 26238 2lgsoddprmlem1 26243 2lgsoddprmlem2 26244 2lgsoddprmlem3a 26245 2lgsoddprmlem3b 26246 2lgsoddprmlem3c 26247 2lgsoddprmlem3d 26248 ex-exp 28487 hgt750lem2 32298 420lcm8e840 39702 3exp7 39744 3lexlogpow5ineq1 39745 3lexlogpow5ineq5 39751 aks4d1p1 39766 ex-decpmul 39968 resqrtvalex 40870 imsqrtvalex 40871 fmtno5lem4 44624 257prm 44629 fmtnoprmfac2lem1 44634 fmtno4prmfac 44640 fmtno4nprmfac193 44642 fmtno5faclem3 44649 m3prm 44660 139prmALT 44664 127prm 44667 m7prm 44668 5tcu2e40 44683 2exp340mod341 44801 8exp8mod9 44804 nfermltl8rev 44810 evengpop3 44866 tgoldbachlt 44884 |
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