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| Mirrors > Home > MPE Home > Th. List > axsegconlem3 | Structured version Visualization version GIF version | ||
| Description: Lemma for axsegcon 28984. Show that the square of the distance between two points is nonnegative. (Contributed by Scott Fenton, 17-Sep-2013.) |
| Ref | Expression |
|---|---|
| axsegconlem2.1 | ⊢ 𝑆 = Σ𝑝 ∈ (1...𝑁)(((𝐴‘𝑝) − (𝐵‘𝑝))↑2) |
| Ref | Expression |
|---|---|
| axsegconlem3 | ⊢ ((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → 0 ≤ 𝑆) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fzfid 13924 | . . 3 ⊢ ((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → (1...𝑁) ∈ Fin) | |
| 2 | fveere 28958 | . . . . . 6 ⊢ ((𝐴 ∈ (𝔼‘𝑁) ∧ 𝑝 ∈ (1...𝑁)) → (𝐴‘𝑝) ∈ ℝ) | |
| 3 | 2 | adantlr 716 | . . . . 5 ⊢ (((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑝 ∈ (1...𝑁)) → (𝐴‘𝑝) ∈ ℝ) |
| 4 | fveere 28958 | . . . . . 6 ⊢ ((𝐵 ∈ (𝔼‘𝑁) ∧ 𝑝 ∈ (1...𝑁)) → (𝐵‘𝑝) ∈ ℝ) | |
| 5 | 4 | adantll 715 | . . . . 5 ⊢ (((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑝 ∈ (1...𝑁)) → (𝐵‘𝑝) ∈ ℝ) |
| 6 | 3, 5 | resubcld 11567 | . . . 4 ⊢ (((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑝 ∈ (1...𝑁)) → ((𝐴‘𝑝) − (𝐵‘𝑝)) ∈ ℝ) |
| 7 | 6 | resqcld 14076 | . . 3 ⊢ (((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑝 ∈ (1...𝑁)) → (((𝐴‘𝑝) − (𝐵‘𝑝))↑2) ∈ ℝ) |
| 8 | 6 | sqge0d 14088 | . . 3 ⊢ (((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑝 ∈ (1...𝑁)) → 0 ≤ (((𝐴‘𝑝) − (𝐵‘𝑝))↑2)) |
| 9 | 1, 7, 8 | fsumge0 15747 | . 2 ⊢ ((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → 0 ≤ Σ𝑝 ∈ (1...𝑁)(((𝐴‘𝑝) − (𝐵‘𝑝))↑2)) |
| 10 | axsegconlem2.1 | . 2 ⊢ 𝑆 = Σ𝑝 ∈ (1...𝑁)(((𝐴‘𝑝) − (𝐵‘𝑝))↑2) | |
| 11 | 9, 10 | breqtrrdi 5116 | 1 ⊢ ((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → 0 ≤ 𝑆) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 class class class wbr 5074 ‘cfv 6487 (class class class)co 7356 ℝcr 11026 0cc0 11027 1c1 11028 ≤ cle 11169 − cmin 11366 2c2 12225 ...cfz 13450 ↑cexp 14012 Σcsu 15637 𝔼cee 28944 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2184 ax-ext 2707 ax-rep 5201 ax-sep 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7678 ax-inf2 9551 ax-cnex 11083 ax-resscn 11084 ax-1cn 11085 ax-icn 11086 ax-addcl 11087 ax-addrcl 11088 ax-mulcl 11089 ax-mulrcl 11090 ax-mulcom 11091 ax-addass 11092 ax-mulass 11093 ax-distr 11094 ax-i2m1 11095 ax-1ne0 11096 ax-1rid 11097 ax-rnegex 11098 ax-rrecex 11099 ax-cnre 11100 ax-pre-lttri 11101 ax-pre-lttrn 11102 ax-pre-ltadd 11103 ax-pre-mulgt0 11104 ax-pre-sup 11105 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2538 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2810 df-nfc 2884 df-ne 2931 df-nel 3035 df-ral 3050 df-rex 3060 df-rmo 3340 df-reu 3341 df-rab 3388 df-v 3429 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4264 df-if 4457 df-pw 4533 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-int 4880 df-iun 4925 df-br 5075 df-opab 5137 df-mpt 5156 df-tr 5182 df-id 5515 df-eprel 5520 df-po 5528 df-so 5529 df-fr 5573 df-se 5574 df-we 5575 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-pred 6254 df-ord 6315 df-on 6316 df-lim 6317 df-suc 6318 df-iota 6443 df-fun 6489 df-fn 6490 df-f 6491 df-f1 6492 df-fo 6493 df-f1o 6494 df-fv 6495 df-isom 6496 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-1st 7931 df-2nd 7932 df-frecs 8220 df-wrecs 8251 df-recs 8300 df-rdg 8338 df-1o 8394 df-er 8632 df-map 8764 df-en 8883 df-dom 8884 df-sdom 8885 df-fin 8886 df-sup 9344 df-oi 9414 df-card 9852 df-pnf 11170 df-mnf 11171 df-xr 11172 df-ltxr 11173 df-le 11174 df-sub 11368 df-neg 11369 df-div 11797 df-nn 12164 df-2 12233 df-3 12234 df-n0 12427 df-z 12514 df-uz 12778 df-rp 12932 df-ico 13293 df-fz 13451 df-fzo 13598 df-seq 13953 df-exp 14013 df-hash 14282 df-cj 15050 df-re 15051 df-im 15052 df-sqrt 15186 df-abs 15187 df-clim 15439 df-sum 15638 df-ee 28947 |
| This theorem is referenced by: axsegconlem4 28977 axsegconlem5 28978 axsegconlem6 28979 axsegconlem9 28982 |
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