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| Mirrors > Home > MPE Home > Th. List > 0lt1sr | Structured version Visualization version GIF version | ||
| Description: 0 is less than 1 for signed reals. (Contributed by NM, 26-Mar-1996.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| 0lt1sr | ⊢ 0R <R 1R |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1pr 11006 | . . . . . 6 ⊢ 1P ∈ P | |
| 2 | addclpr 11009 | . . . . . 6 ⊢ ((1P ∈ P ∧ 1P ∈ P) → (1P +P 1P) ∈ P) | |
| 3 | 1, 1, 2 | mp2an 704 | . . . . 5 ⊢ (1P +P 1P) ∈ P |
| 4 | ltaddpr 11025 | . . . . 5 ⊢ (((1P +P 1P) ∈ P ∧ 1P ∈ P) → (1P +P 1P)<P ((1P +P 1P) +P 1P)) | |
| 5 | 3, 1, 4 | mp2an 704 | . . . 4 ⊢ (1P +P 1P)<P ((1P +P 1P) +P 1P) |
| 6 | addcompr 11012 | . . . 4 ⊢ (1P +P (1P +P 1P)) = ((1P +P 1P) +P 1P) | |
| 7 | 5, 6 | breqtrri 5137 | . . 3 ⊢ (1P +P 1P)<P (1P +P (1P +P 1P)) |
| 8 | ltsrpr 11068 | . . 3 ⊢ ([〈1P, 1P〉] ~R <R [〈(1P +P 1P), 1P〉] ~R ↔ (1P +P 1P)<P (1P +P (1P +P 1P))) | |
| 9 | 7, 8 | mpbir 234 | . 2 ⊢ [〈1P, 1P〉] ~R <R [〈(1P +P 1P), 1P〉] ~R |
| 10 | df-0r 11051 | . 2 ⊢ 0R = [〈1P, 1P〉] ~R | |
| 11 | df-1r 11052 | . 2 ⊢ 1R = [〈(1P +P 1P), 1P〉] ~R | |
| 12 | 9, 10, 11 | 3brtr4i 5140 | 1 ⊢ 0R <R 1R |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2142 〈cop 4594 class class class wbr 5108 (class class class)co 7412 [cec 8690 Pcnp 10850 1Pc1p 10851 +P cpp 10852 <P cltp 10854 ~R cer 10855 0Rc0r 10857 1Rc1r 10858 <R cltr 10862 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 ax-un 7734 ax-inf2 9608 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-int 4912 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5555 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7861 df-1st 7984 df-2nd 7985 df-frecs 8276 df-wrecs 8307 df-recs 8356 df-rdg 8395 df-1o 8451 df-oadd 8455 df-omul 8456 df-er 8692 df-ec 8694 df-qs 8698 df-ni 10863 df-pli 10864 df-mi 10865 df-lti 10866 df-plpq 10899 df-mpq 10900 df-ltpq 10901 df-enq 10902 df-nq 10903 df-erq 10904 df-plq 10905 df-mq 10906 df-1nq 10907 df-rq 10908 df-ltnq 10909 df-np 10972 df-1p 10973 df-plp 10974 df-ltp 10976 df-enr 11046 df-nr 11047 df-ltr 11050 df-0r 11051 df-1r 11052 |
| This theorem is used by: 1ne0sr 11087 supsrlem 11102 |
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