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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 8779 | . 2 ⊢ 2 = (1 + 1) | |
2 | 1re 7765 | . . 3 ⊢ 1 ∈ ℝ | |
3 | 2, 2 | readdcli 7779 | . 2 ⊢ (1 + 1) ∈ ℝ |
4 | 1, 3 | eqeltri 2212 | 1 ⊢ 2 ∈ ℝ |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 1480 (class class class)co 5774 ℝcr 7619 1c1 7621 + caddc 7623 2c2 8771 |
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 2121 ax-1re 7714 ax-addrcl 7717 |
This theorem depends on definitions: df-bi 116 df-cleq 2132 df-clel 2135 df-2 8779 |
This theorem is referenced by: 2cn 8791 3re 8794 2ne0 8812 2ap0 8813 3pos 8814 2lt3 8890 1lt3 8891 2lt4 8893 1lt4 8894 2lt5 8897 2lt6 8902 1lt6 8903 2lt7 8908 1lt7 8909 2lt8 8915 1lt8 8916 2lt9 8923 1lt9 8924 1ap2 8927 1le2 8928 2rene0 8930 halfre 8933 halfgt0 8935 halflt1 8937 rehalfcl 8947 halfpos2 8950 halfnneg2 8952 addltmul 8956 nominpos 8957 avglt1 8958 avglt2 8959 div4p1lem1div2 8973 nn0lele2xi 9028 nn0ge2m1nn 9037 halfnz 9147 3halfnz 9148 2lt10 9319 1lt10 9320 uzuzle23 9366 uz3m2nn 9368 2rp 9446 xleaddadd 9670 fztpval 9863 fzo0to42pr 9997 qbtwnrelemcalc 10033 qbtwnre 10034 2tnp1ge0ge0 10074 flhalf 10075 fldiv4p1lem1div2 10078 mulp1mod1 10138 expubnd 10350 nn0opthlem2d 10467 faclbnd2 10488 4bc2eq6 10520 cvg1nlemres 10757 resqrexlemover 10782 resqrexlemga 10795 sqrt4 10819 sqrt2gt1lt2 10821 abstri 10876 amgm2 10890 maxabslemlub 10979 maxltsup 10990 bdtrilem 11010 efcllemp 11364 efcllem 11365 ege2le3 11377 ef01bndlem 11463 cos01bnd 11465 cos2bnd 11467 cos01gt0 11469 sin02gt0 11470 sincos2sgn 11472 sin4lt0 11473 cos12dec 11474 eirraplem 11483 egt2lt3 11486 epos 11487 ene1 11491 eap1 11492 oexpneg 11574 oddge22np1 11578 evennn02n 11579 evennn2n 11580 nn0ehalf 11600 nno 11603 nn0o 11604 nn0oddm1d2 11606 nnoddm1d2 11607 flodddiv4t2lthalf 11634 6gcd4e2 11683 ncoprmgcdne1b 11770 3lcm2e6 11838 sqrt2irrlem 11839 sqrt2re 11841 sqrt2irraplemnn 11857 sqrt2irrap 11858 plusgndxnmulrndx 12072 bl2in 12572 cosz12 12861 sin0pilem1 12862 sin0pilem2 12863 pilem3 12864 pipos 12869 sinhalfpilem 12872 sincosq1lem 12906 sincosq4sgn 12910 sinq12gt0 12911 cosq23lt0 12914 coseq00topi 12916 coseq0negpitopi 12917 tangtx 12919 sincos4thpi 12921 tan4thpi 12922 sincos6thpi 12923 cosordlem 12930 cosq34lt1 12931 cos02pilt1 12932 ex-fl 12937 taupi 13239 |
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