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| Mirrors > Home > ILE Home > Th. List > expge1 | Unicode version | ||
| Description: A real greater than or equal to 1 raised to a nonnegative integer is greater than or equal to 1. (Contributed by NM, 21-Feb-2005.) (Revised by Mario Carneiro, 4-Jun-2014.) |
| Ref | Expression |
|---|---|
| expge1 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | breq2 4113 |
. . . . . 6
| |
| 2 | 1 | elrab 2973 |
. . . . 5
|
| 3 | ssrab2 3323 |
. . . . . . 7
| |
| 4 | ax-resscn 8219 |
. . . . . . 7
| |
| 5 | 3, 4 | sstri 3247 |
. . . . . 6
|
| 6 | breq2 4113 |
. . . . . . . 8
| |
| 7 | 6 | elrab 2973 |
. . . . . . 7
|
| 8 | breq2 4113 |
. . . . . . . 8
| |
| 9 | 8 | elrab 2973 |
. . . . . . 7
|
| 10 | remulcl 8255 |
. . . . . . . . 9
| |
| 11 | 10 | ad2ant2r 509 |
. . . . . . . 8
|
| 12 | 1t1e1 9390 |
. . . . . . . . . 10
| |
| 13 | 1re 8273 |
. . . . . . . . . . . . . 14
| |
| 14 | 0le1 8755 |
. . . . . . . . . . . . . 14
| |
| 15 | 13, 14 | pm3.2i 272 |
. . . . . . . . . . . . 13
|
| 16 | 15 | jctl 314 |
. . . . . . . . . . . 12
|
| 17 | 15 | jctl 314 |
. . . . . . . . . . . 12
|
| 18 | lemul12a 9136 |
. . . . . . . . . . . 12
| |
| 19 | 16, 17, 18 | syl2an 289 |
. . . . . . . . . . 11
|
| 20 | 19 | imp 124 |
. . . . . . . . . 10
|
| 21 | 12, 20 | eqbrtrrid 4145 |
. . . . . . . . 9
|
| 22 | 21 | an4s 592 |
. . . . . . . 8
|
| 23 | breq2 4113 |
. . . . . . . . 9
| |
| 24 | 23 | elrab 2973 |
. . . . . . . 8
|
| 25 | 11, 22, 24 | sylanbrc 417 |
. . . . . . 7
|
| 26 | 7, 9, 25 | syl2anb 291 |
. . . . . 6
|
| 27 | 1le1 8846 |
. . . . . . 7
| |
| 28 | breq2 4113 |
. . . . . . . 8
| |
| 29 | 28 | elrab 2973 |
. . . . . . 7
|
| 30 | 13, 27, 29 | mpbir2an 951 |
. . . . . 6
|
| 31 | 5, 26, 30 | expcllem 10912 |
. . . . 5
|
| 32 | 2, 31 | sylanbr 285 |
. . . 4
|
| 33 | 32 | 3impa 1221 |
. . 3
|
| 34 | 33 | 3com23 1236 |
. 2
|
| 35 | breq2 4113 |
. . . 4
| |
| 36 | 35 | elrab 2973 |
. . 3
|
| 37 | 36 | simprbi 275 |
. 2
|
| 38 | 34, 37 | syl 14 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2205 ax-14 2206 ax-ext 2214 ax-coll 4225 ax-sep 4228 ax-nul 4236 ax-pow 4287 ax-pr 4322 ax-un 4554 ax-setind 4659 ax-iinf 4710 ax-cnex 8218 ax-resscn 8219 ax-1cn 8220 ax-1re 8221 ax-icn 8222 ax-addcl 8223 ax-addrcl 8224 ax-mulcl 8225 ax-mulrcl 8226 ax-addcom 8227 ax-mulcom 8228 ax-addass 8229 ax-mulass 8230 ax-distr 8231 ax-i2m1 8232 ax-0lt1 8233 ax-1rid 8234 ax-0id 8235 ax-rnegex 8236 ax-precex 8237 ax-cnre 8238 ax-pre-ltirr 8239 ax-pre-ltwlin 8240 ax-pre-lttrn 8241 ax-pre-apti 8242 ax-pre-ltadd 8243 ax-pre-mulgt0 8244 ax-pre-mulext 8245 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-nel 2508 df-ral 2525 df-rex 2526 df-reu 2527 df-rmo 2528 df-rab 2529 df-v 2815 df-sbc 3043 df-csb 3139 df-dif 3213 df-un 3215 df-in 3217 df-ss 3224 df-nul 3509 df-if 3621 df-pw 3671 df-sn 3695 df-pr 3696 df-op 3698 df-uni 3915 df-int 3950 df-iun 3993 df-br 4110 df-opab 4172 df-mpt 4173 df-tr 4209 df-id 4414 df-po 4417 df-iso 4418 df-iord 4487 df-on 4489 df-ilim 4490 df-suc 4492 df-iom 4713 df-xp 4755 df-rel 4756 df-cnv 4757 df-co 4758 df-dm 4759 df-rn 4760 df-res 4761 df-ima 4762 df-iota 5312 df-fun 5354 df-fn 5355 df-f 5356 df-f1 5357 df-fo 5358 df-f1o 5359 df-fv 5360 df-riota 6003 df-ov 6053 df-oprab 6054 df-mpo 6055 df-1st 6334 df-2nd 6335 df-recs 6536 df-frec 6622 df-pnf 8310 df-mnf 8311 df-xr 8312 df-ltxr 8313 df-le 8314 df-sub 8446 df-neg 8447 df-reap 8849 df-ap 8856 df-div 8947 df-inn 9238 df-n0 9497 df-z 9578 df-uz 9854 df-seqfrec 10810 df-exp 10901 |
| This theorem is referenced by: expgt1 10939 leexp2a 10954 expge1d 11054 |
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