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| Mirrors > Home > MPE Home > Th. List > elfzel1 | Structured version Visualization version GIF version | ||
| Description: Membership in a finite set of sequential integer implies the lower bound is an integer. (Contributed by NM, 6-Sep-2005.) (Revised by Mario Carneiro, 28-Apr-2015.) |
| Ref | Expression |
|---|---|
| elfzel1 | ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝑀 ∈ ℤ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elfzuz 13434 | . 2 ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝐾 ∈ (ℤ≥‘𝑀)) | |
| 2 | eluzel2 12754 | . 2 ⊢ (𝐾 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ ℤ) | |
| 3 | 1, 2 | syl 17 | 1 ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝑀 ∈ ℤ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2113 ‘cfv 6490 (class class class)co 7356 ℤcz 12486 ℤ≥cuz 12749 ...cfz 13421 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 ax-sep 5239 ax-nul 5249 ax-pr 5375 ax-un 7678 ax-cnex 11080 ax-resscn 11081 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ne 2931 df-ral 3050 df-rex 3059 df-rab 3398 df-v 3440 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-op 4585 df-uni 4862 df-iun 4946 df-br 5097 df-opab 5159 df-mpt 5178 df-id 5517 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-fv 6498 df-ov 7359 df-oprab 7360 df-mpo 7361 df-1st 7931 df-2nd 7932 df-neg 11365 df-z 12487 df-uz 12750 df-fz 13422 |
| This theorem is referenced by: fzdisj 13465 fzrev2i 13503 fzrev3 13504 uznfz 13524 elfzmlbm 13552 bcp1nk 14238 fallfacval3 15933 fzm1ne1 32817 fzmaxdif 43165 jm2.23 43180 monoords 45487 iblspltprt 46159 itgspltprt 46165 stoweidlem34 46220 iundjiun 46646 iccpartgt 47615 altgsumbcALT 48541 |
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