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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 8098 | . 2 ⊢ 2 = (1 + 1) | |
2 | 1re 7118 | . . 3 ⊢ 1 ∈ ℝ | |
3 | 2, 2 | readdcli 7132 | . 2 ⊢ (1 + 1) ∈ ℝ |
4 | 1, 3 | eqeltri 2151 | 1 ⊢ 2 ∈ ℝ |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 1433 (class class class)co 5532 ℝcr 6980 1c1 6982 + caddc 6984 2c2 8089 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-5 1376 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-4 1440 ax-17 1459 ax-ial 1467 ax-ext 2063 ax-1re 7070 ax-addrcl 7073 |
This theorem depends on definitions: df-bi 115 df-cleq 2074 df-clel 2077 df-2 8098 |
This theorem is referenced by: 2cn 8110 3re 8113 2ne0 8131 2ap0 8132 3pos 8133 2lt3 8202 1lt3 8203 2lt4 8205 1lt4 8206 2lt5 8209 2lt6 8214 1lt6 8215 2lt7 8220 1lt7 8221 2lt8 8227 1lt8 8228 2lt9 8235 1lt9 8236 1le2 8239 2rene0 8241 halfre 8244 halfgt0 8246 halflt1 8248 rehalfcl 8258 halfpos2 8261 halfnneg2 8263 addltmul 8267 nominpos 8268 avglt1 8269 avglt2 8270 div4p1lem1div2 8284 nn0lele2xi 8339 nn0ge2m1nn 8348 halfnz 8443 3halfnz 8444 2lt10 8614 1lt10 8615 uzuzle23 8659 uz3m2nn 8661 2rp 8739 fztpval 9100 fzo0to42pr 9229 qbtwnrelemcalc 9264 qbtwnre 9265 2tnp1ge0ge0 9303 flhalf 9304 fldiv4p1lem1div2 9307 mulp1mod1 9367 expubnd 9533 nn0opthlem2d 9648 faclbnd2 9669 4bc2eq6 9701 cvg1nlemres 9871 resqrexlemover 9896 resqrexlemga 9909 sqrt4 9933 sqrt2gt1lt2 9935 abstri 9990 amgm2 10004 maxabslemlub 10093 maxltsup 10104 oexpneg 10276 oddge22np1 10281 evennn02n 10282 evennn2n 10283 nn0ehalf 10303 nno 10306 nn0o 10307 nn0oddm1d2 10309 nnoddm1d2 10310 flodddiv4t2lthalf 10337 6gcd4e2 10384 ncoprmgcdne1b 10471 3lcm2e6 10539 sqrt2irrlem 10540 sqrt2re 10542 sqrt2irraplemnn 10557 sqrt2irrap 10558 ex-fl 10563 |
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