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Mirrors > Home > MPE Home > Th. List > Mathboxes > seglerflx | Structured version Visualization version GIF version |
Description: Segment comparison is reflexive. Theorem 5.7 of [Schwabhauser] p. 42. (Contributed by Scott Fenton, 11-Oct-2013.) |
Ref | Expression |
---|---|
seglerflx | ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → 〈𝐴, 𝐵〉 Seg≤ 〈𝐴, 𝐵〉) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simp3 1063 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → 𝐵 ∈ (𝔼‘𝑁)) | |
2 | btwntriv2 32119 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → 𝐵 Btwn 〈𝐴, 𝐵〉) | |
3 | cgrrflx 32094 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → 〈𝐴, 𝐵〉Cgr〈𝐴, 𝐵〉) | |
4 | breq1 4656 | . . . . 5 ⊢ (𝑦 = 𝐵 → (𝑦 Btwn 〈𝐴, 𝐵〉 ↔ 𝐵 Btwn 〈𝐴, 𝐵〉)) | |
5 | opeq2 4403 | . . . . . 6 ⊢ (𝑦 = 𝐵 → 〈𝐴, 𝑦〉 = 〈𝐴, 𝐵〉) | |
6 | 5 | breq2d 4665 | . . . . 5 ⊢ (𝑦 = 𝐵 → (〈𝐴, 𝐵〉Cgr〈𝐴, 𝑦〉 ↔ 〈𝐴, 𝐵〉Cgr〈𝐴, 𝐵〉)) |
7 | 4, 6 | anbi12d 747 | . . . 4 ⊢ (𝑦 = 𝐵 → ((𝑦 Btwn 〈𝐴, 𝐵〉 ∧ 〈𝐴, 𝐵〉Cgr〈𝐴, 𝑦〉) ↔ (𝐵 Btwn 〈𝐴, 𝐵〉 ∧ 〈𝐴, 𝐵〉Cgr〈𝐴, 𝐵〉))) |
8 | 7 | rspcev 3309 | . . 3 ⊢ ((𝐵 ∈ (𝔼‘𝑁) ∧ (𝐵 Btwn 〈𝐴, 𝐵〉 ∧ 〈𝐴, 𝐵〉Cgr〈𝐴, 𝐵〉)) → ∃𝑦 ∈ (𝔼‘𝑁)(𝑦 Btwn 〈𝐴, 𝐵〉 ∧ 〈𝐴, 𝐵〉Cgr〈𝐴, 𝑦〉)) |
9 | 1, 2, 3, 8 | syl12anc 1324 | . 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → ∃𝑦 ∈ (𝔼‘𝑁)(𝑦 Btwn 〈𝐴, 𝐵〉 ∧ 〈𝐴, 𝐵〉Cgr〈𝐴, 𝑦〉)) |
10 | simp1 1061 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → 𝑁 ∈ ℕ) | |
11 | simp2 1062 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → 𝐴 ∈ (𝔼‘𝑁)) | |
12 | brsegle 32215 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ (𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁))) → (〈𝐴, 𝐵〉 Seg≤ 〈𝐴, 𝐵〉 ↔ ∃𝑦 ∈ (𝔼‘𝑁)(𝑦 Btwn 〈𝐴, 𝐵〉 ∧ 〈𝐴, 𝐵〉Cgr〈𝐴, 𝑦〉))) | |
13 | 10, 11, 1, 11, 1, 12 | syl122anc 1335 | . 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → (〈𝐴, 𝐵〉 Seg≤ 〈𝐴, 𝐵〉 ↔ ∃𝑦 ∈ (𝔼‘𝑁)(𝑦 Btwn 〈𝐴, 𝐵〉 ∧ 〈𝐴, 𝐵〉Cgr〈𝐴, 𝑦〉))) |
14 | 9, 13 | mpbird 247 | 1 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → 〈𝐴, 𝐵〉 Seg≤ 〈𝐴, 𝐵〉) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 196 ∧ wa 384 ∧ w3a 1037 = wceq 1483 ∈ wcel 1990 ∃wrex 2913 〈cop 4183 class class class wbr 4653 ‘cfv 5888 ℕcn 11020 𝔼cee 25768 Btwn cbtwn 25769 Cgrccgr 25770 Seg≤ csegle 32213 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-rep 4771 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 ax-inf2 8538 ax-cnex 9992 ax-resscn 9993 ax-1cn 9994 ax-icn 9995 ax-addcl 9996 ax-addrcl 9997 ax-mulcl 9998 ax-mulrcl 9999 ax-mulcom 10000 ax-addass 10001 ax-mulass 10002 ax-distr 10003 ax-i2m1 10004 ax-1ne0 10005 ax-1rid 10006 ax-rnegex 10007 ax-rrecex 10008 ax-cnre 10009 ax-pre-lttri 10010 ax-pre-lttrn 10011 ax-pre-ltadd 10012 ax-pre-mulgt0 10013 ax-pre-sup 10014 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-fal 1489 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-nel 2898 df-ral 2917 df-rex 2918 df-reu 2919 df-rmo 2920 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-pss 3590 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-int 4476 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-tr 4753 df-id 5024 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-se 5074 df-we 5075 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-pred 5680 df-ord 5726 df-on 5727 df-lim 5728 df-suc 5729 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-isom 5897 df-riota 6611 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-om 7066 df-1st 7168 df-2nd 7169 df-wrecs 7407 df-recs 7468 df-rdg 7506 df-1o 7560 df-oadd 7564 df-er 7742 df-map 7859 df-en 7956 df-dom 7957 df-sdom 7958 df-fin 7959 df-sup 8348 df-oi 8415 df-card 8765 df-pnf 10076 df-mnf 10077 df-xr 10078 df-ltxr 10079 df-le 10080 df-sub 10268 df-neg 10269 df-div 10685 df-nn 11021 df-2 11079 df-3 11080 df-n0 11293 df-z 11378 df-uz 11688 df-rp 11833 df-ico 12181 df-icc 12182 df-fz 12327 df-fzo 12466 df-seq 12802 df-exp 12861 df-hash 13118 df-cj 13839 df-re 13840 df-im 13841 df-sqrt 13975 df-abs 13976 df-clim 14219 df-sum 14417 df-ee 25771 df-btwn 25772 df-cgr 25773 df-segle 32214 |
This theorem is referenced by: (None) |
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