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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 8907 | . 2 ⊢ 2 = (1 + 1) | |
2 | 1re 7889 | . . 3 ⊢ 1 ∈ ℝ | |
3 | 2, 2 | readdcli 7903 | . 2 ⊢ (1 + 1) ∈ ℝ |
4 | 1, 3 | eqeltri 2237 | 1 ⊢ 2 ∈ ℝ |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 2135 (class class class)co 5836 ℝcr 7743 1c1 7745 + caddc 7747 2c2 8899 |
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 1434 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-4 1497 ax-17 1513 ax-ial 1521 ax-ext 2146 ax-1re 7838 ax-addrcl 7841 |
This theorem depends on definitions: df-bi 116 df-cleq 2157 df-clel 2160 df-2 8907 |
This theorem is referenced by: 2cn 8919 3re 8922 2ne0 8940 2ap0 8941 3pos 8942 2lt3 9018 1lt3 9019 2lt4 9021 1lt4 9022 2lt5 9025 2lt6 9030 1lt6 9031 2lt7 9036 1lt7 9037 2lt8 9043 1lt8 9044 2lt9 9051 1lt9 9052 1ap2 9055 1le2 9056 2rene0 9058 halfre 9061 halfgt0 9063 halflt1 9065 rehalfcl 9075 halfpos2 9078 halfnneg2 9080 addltmul 9084 nominpos 9085 avglt1 9086 avglt2 9087 div4p1lem1div2 9101 nn0lele2xi 9156 nn0ge2m1nn 9165 halfnz 9278 3halfnz 9279 2lt10 9450 1lt10 9451 eluz4eluz2 9496 uzuzle23 9500 uz3m2nn 9502 2rp 9585 xleaddadd 9814 fztpval 10008 fz0to4untppr 10049 fzo0to42pr 10145 qbtwnrelemcalc 10181 qbtwnre 10182 2tnp1ge0ge0 10226 flhalf 10227 fldiv4p1lem1div2 10230 mulp1mod1 10290 expubnd 10502 nn0opthlem2d 10623 faclbnd2 10644 4bc2eq6 10676 cvg1nlemres 10913 resqrexlemover 10938 resqrexlemga 10951 sqrt4 10975 sqrt2gt1lt2 10977 abstri 11032 amgm2 11046 maxabslemlub 11135 maxltsup 11146 bdtrilem 11166 efcllemp 11585 efcllem 11586 ege2le3 11598 ef01bndlem 11683 cos01bnd 11685 cos2bnd 11687 cos01gt0 11689 sin02gt0 11690 sincos2sgn 11692 sin4lt0 11693 cos12dec 11694 eirraplem 11703 egt2lt3 11706 epos 11707 ene1 11711 eap1 11712 oexpneg 11799 oddge22np1 11803 evennn02n 11804 evennn2n 11805 nn0ehalf 11825 nno 11828 nn0o 11829 nn0oddm1d2 11831 nnoddm1d2 11832 flodddiv4t2lthalf 11859 6gcd4e2 11913 ncoprmgcdne1b 12000 prmdc 12041 3lcm2e6 12069 sqrt2irrlem 12070 sqrt2re 12072 sqrt2irraplemnn 12088 sqrt2irrap 12089 plusgndxnmulrndx 12444 bl2in 12944 reeff1o 13235 cosz12 13242 sin0pilem1 13243 sin0pilem2 13244 pilem3 13245 pipos 13250 sinhalfpilem 13253 sincosq1lem 13287 sincosq4sgn 13291 sinq12gt0 13292 cosq23lt0 13295 coseq00topi 13297 coseq0negpitopi 13298 tangtx 13300 sincos4thpi 13302 tan4thpi 13303 sincos6thpi 13304 cosordlem 13311 cosq34lt1 13312 cos02pilt1 13313 cos0pilt1 13314 2logb9irr 13430 2logb3irr 13432 2logb9irrALT 13433 sqrt2cxp2logb9e3 13434 2logb9irrap 13436 ex-fl 13443 taupi 13783 |
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