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Mirrors > Home > MPE Home > Th. List > axsegconlem2 | Structured version Visualization version GIF version |
Description: Lemma for axsegcon 26990. Show that the square of the distance between two points is a real number. (Contributed by Scott Fenton, 17-Sep-2013.) |
Ref | Expression |
---|---|
axsegconlem2.1 | ⊢ 𝑆 = Σ𝑝 ∈ (1...𝑁)(((𝐴‘𝑝) − (𝐵‘𝑝))↑2) |
Ref | Expression |
---|---|
axsegconlem2 | ⊢ ((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → 𝑆 ∈ ℝ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | axsegconlem2.1 | . 2 ⊢ 𝑆 = Σ𝑝 ∈ (1...𝑁)(((𝐴‘𝑝) − (𝐵‘𝑝))↑2) | |
2 | fzfid 13529 | . . 3 ⊢ ((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → (1...𝑁) ∈ Fin) | |
3 | fveere 26964 | . . . . 5 ⊢ ((𝐴 ∈ (𝔼‘𝑁) ∧ 𝑝 ∈ (1...𝑁)) → (𝐴‘𝑝) ∈ ℝ) | |
4 | fveere 26964 | . . . . 5 ⊢ ((𝐵 ∈ (𝔼‘𝑁) ∧ 𝑝 ∈ (1...𝑁)) → (𝐵‘𝑝) ∈ ℝ) | |
5 | resubcl 11125 | . . . . . 6 ⊢ (((𝐴‘𝑝) ∈ ℝ ∧ (𝐵‘𝑝) ∈ ℝ) → ((𝐴‘𝑝) − (𝐵‘𝑝)) ∈ ℝ) | |
6 | 5 | resqcld 13800 | . . . . 5 ⊢ (((𝐴‘𝑝) ∈ ℝ ∧ (𝐵‘𝑝) ∈ ℝ) → (((𝐴‘𝑝) − (𝐵‘𝑝))↑2) ∈ ℝ) |
7 | 3, 4, 6 | syl2an 599 | . . . 4 ⊢ (((𝐴 ∈ (𝔼‘𝑁) ∧ 𝑝 ∈ (1...𝑁)) ∧ (𝐵 ∈ (𝔼‘𝑁) ∧ 𝑝 ∈ (1...𝑁))) → (((𝐴‘𝑝) − (𝐵‘𝑝))↑2) ∈ ℝ) |
8 | 7 | anandirs 679 | . . 3 ⊢ (((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) ∧ 𝑝 ∈ (1...𝑁)) → (((𝐴‘𝑝) − (𝐵‘𝑝))↑2) ∈ ℝ) |
9 | 2, 8 | fsumrecl 15281 | . 2 ⊢ ((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → Σ𝑝 ∈ (1...𝑁)(((𝐴‘𝑝) − (𝐵‘𝑝))↑2) ∈ ℝ) |
10 | 1, 9 | eqeltrid 2838 | 1 ⊢ ((𝐴 ∈ (𝔼‘𝑁) ∧ 𝐵 ∈ (𝔼‘𝑁)) → 𝑆 ∈ ℝ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1543 ∈ wcel 2110 ‘cfv 6369 (class class class)co 7202 ℝcr 10711 1c1 10713 − cmin 11045 2c2 11868 ...cfz 13078 ↑cexp 13618 Σcsu 15232 𝔼cee 26951 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2706 ax-rep 5168 ax-sep 5181 ax-nul 5188 ax-pow 5247 ax-pr 5311 ax-un 7512 ax-inf2 9245 ax-cnex 10768 ax-resscn 10769 ax-1cn 10770 ax-icn 10771 ax-addcl 10772 ax-addrcl 10773 ax-mulcl 10774 ax-mulrcl 10775 ax-mulcom 10776 ax-addass 10777 ax-mulass 10778 ax-distr 10779 ax-i2m1 10780 ax-1ne0 10781 ax-1rid 10782 ax-rnegex 10783 ax-rrecex 10784 ax-cnre 10785 ax-pre-lttri 10786 ax-pre-lttrn 10787 ax-pre-ltadd 10788 ax-pre-mulgt0 10789 ax-pre-sup 10790 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2071 df-mo 2537 df-eu 2566 df-clab 2713 df-cleq 2726 df-clel 2812 df-nfc 2882 df-ne 2936 df-nel 3040 df-ral 3059 df-rex 3060 df-reu 3061 df-rmo 3062 df-rab 3063 df-v 3403 df-sbc 3688 df-csb 3803 df-dif 3860 df-un 3862 df-in 3864 df-ss 3874 df-pss 3876 df-nul 4228 df-if 4430 df-pw 4505 df-sn 4532 df-pr 4534 df-tp 4536 df-op 4538 df-uni 4810 df-int 4850 df-iun 4896 df-br 5044 df-opab 5106 df-mpt 5125 df-tr 5151 df-id 5444 df-eprel 5449 df-po 5457 df-so 5458 df-fr 5498 df-se 5499 df-we 5500 df-xp 5546 df-rel 5547 df-cnv 5548 df-co 5549 df-dm 5550 df-rn 5551 df-res 5552 df-ima 5553 df-pred 6149 df-ord 6205 df-on 6206 df-lim 6207 df-suc 6208 df-iota 6327 df-fun 6371 df-fn 6372 df-f 6373 df-f1 6374 df-fo 6375 df-f1o 6376 df-fv 6377 df-isom 6378 df-riota 7159 df-ov 7205 df-oprab 7206 df-mpo 7207 df-om 7634 df-1st 7750 df-2nd 7751 df-wrecs 8036 df-recs 8097 df-rdg 8135 df-1o 8191 df-er 8380 df-map 8499 df-en 8616 df-dom 8617 df-sdom 8618 df-fin 8619 df-sup 9047 df-oi 9115 df-card 9538 df-pnf 10852 df-mnf 10853 df-xr 10854 df-ltxr 10855 df-le 10856 df-sub 11047 df-neg 11048 df-div 11473 df-nn 11814 df-2 11876 df-3 11877 df-n0 12074 df-z 12160 df-uz 12422 df-rp 12570 df-fz 13079 df-fzo 13222 df-seq 13558 df-exp 13619 df-hash 13880 df-cj 14645 df-re 14646 df-im 14647 df-sqrt 14781 df-abs 14782 df-clim 15032 df-sum 15233 df-ee 26954 |
This theorem is referenced by: axsegconlem4 26983 axsegconlem5 26984 axsegconlem6 26985 axsegconlem9 26988 |
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