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Mirrors > Home > ILE Home > Th. List > 2re | GIF version |
Description: The number 2 is real. (Contributed by NM, 27-May-1999.) |
Ref | Expression |
---|---|
2re | ⊢ 2 ∈ ℝ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-2 8772 | . 2 ⊢ 2 = (1 + 1) | |
2 | 1re 7758 | . . 3 ⊢ 1 ∈ ℝ | |
3 | 2, 2 | readdcli 7772 | . 2 ⊢ (1 + 1) ∈ ℝ |
4 | 1, 3 | eqeltri 2210 | 1 ⊢ 2 ∈ ℝ |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 1480 (class class class)co 5767 ℝcr 7612 1c1 7614 + caddc 7616 2c2 8764 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1423 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-4 1487 ax-17 1506 ax-ial 1514 ax-ext 2119 ax-1re 7707 ax-addrcl 7710 |
This theorem depends on definitions: df-bi 116 df-cleq 2130 df-clel 2133 df-2 8772 |
This theorem is referenced by: 2cn 8784 3re 8787 2ne0 8805 2ap0 8806 3pos 8807 2lt3 8883 1lt3 8884 2lt4 8886 1lt4 8887 2lt5 8890 2lt6 8895 1lt6 8896 2lt7 8901 1lt7 8902 2lt8 8908 1lt8 8909 2lt9 8916 1lt9 8917 1ap2 8920 1le2 8921 2rene0 8923 halfre 8926 halfgt0 8928 halflt1 8930 rehalfcl 8940 halfpos2 8943 halfnneg2 8945 addltmul 8949 nominpos 8950 avglt1 8951 avglt2 8952 div4p1lem1div2 8966 nn0lele2xi 9021 nn0ge2m1nn 9030 halfnz 9140 3halfnz 9141 2lt10 9312 1lt10 9313 uzuzle23 9359 uz3m2nn 9361 2rp 9439 xleaddadd 9663 fztpval 9856 fzo0to42pr 9990 qbtwnrelemcalc 10026 qbtwnre 10027 2tnp1ge0ge0 10067 flhalf 10068 fldiv4p1lem1div2 10071 mulp1mod1 10131 expubnd 10343 nn0opthlem2d 10460 faclbnd2 10481 4bc2eq6 10513 cvg1nlemres 10750 resqrexlemover 10775 resqrexlemga 10788 sqrt4 10812 sqrt2gt1lt2 10814 abstri 10869 amgm2 10883 maxabslemlub 10972 maxltsup 10983 bdtrilem 11003 efcllemp 11353 efcllem 11354 ege2le3 11366 ef01bndlem 11452 cos01bnd 11454 cos2bnd 11456 cos01gt0 11458 sin02gt0 11459 sincos2sgn 11461 sin4lt0 11462 cos12dec 11463 eirraplem 11472 egt2lt3 11475 epos 11476 ene1 11480 eap1 11481 oexpneg 11563 oddge22np1 11567 evennn02n 11568 evennn2n 11569 nn0ehalf 11589 nno 11592 nn0o 11593 nn0oddm1d2 11595 nnoddm1d2 11596 flodddiv4t2lthalf 11623 6gcd4e2 11672 ncoprmgcdne1b 11759 3lcm2e6 11827 sqrt2irrlem 11828 sqrt2re 11830 sqrt2irraplemnn 11846 sqrt2irrap 11847 plusgndxnmulrndx 12061 bl2in 12561 cosz12 12850 sin0pilem1 12851 sin0pilem2 12852 pilem3 12853 pipos 12858 sinhalfpilem 12861 sincosq1lem 12895 sincosq4sgn 12899 sinq12gt0 12900 cosq23lt0 12903 coseq00topi 12905 coseq0negpitopi 12906 tangtx 12908 sincos4thpi 12910 tan4thpi 12911 sincos6thpi 12912 cosordlem 12919 cosq34lt1 12920 cos02pilt1 12921 ex-fl 12926 taupi 13228 |
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