Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > fzostep1 | Structured version Visualization version GIF version |
Description: Two possibilities for a number one greater than a number in a half-open range. (Contributed by Stefan O'Rear, 23-Aug-2015.) |
Ref | Expression |
---|---|
fzostep1 | ⊢ (𝐴 ∈ (𝐵..^𝐶) → ((𝐴 + 1) ∈ (𝐵..^𝐶) ∨ (𝐴 + 1) = 𝐶)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elfzoel1 13241 | . . . 4 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐵 ∈ ℤ) | |
2 | uzid 12453 | . . . 4 ⊢ (𝐵 ∈ ℤ → 𝐵 ∈ (ℤ≥‘𝐵)) | |
3 | peano2uz 12497 | . . . 4 ⊢ (𝐵 ∈ (ℤ≥‘𝐵) → (𝐵 + 1) ∈ (ℤ≥‘𝐵)) | |
4 | fzoss1 13269 | . . . 4 ⊢ ((𝐵 + 1) ∈ (ℤ≥‘𝐵) → ((𝐵 + 1)..^(𝐶 + 1)) ⊆ (𝐵..^(𝐶 + 1))) | |
5 | 1, 2, 3, 4 | 4syl 19 | . . 3 ⊢ (𝐴 ∈ (𝐵..^𝐶) → ((𝐵 + 1)..^(𝐶 + 1)) ⊆ (𝐵..^(𝐶 + 1))) |
6 | 1z 12207 | . . . 4 ⊢ 1 ∈ ℤ | |
7 | fzoaddel 13295 | . . . 4 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 1 ∈ ℤ) → (𝐴 + 1) ∈ ((𝐵 + 1)..^(𝐶 + 1))) | |
8 | 6, 7 | mpan2 691 | . . 3 ⊢ (𝐴 ∈ (𝐵..^𝐶) → (𝐴 + 1) ∈ ((𝐵 + 1)..^(𝐶 + 1))) |
9 | 5, 8 | sseldd 3902 | . 2 ⊢ (𝐴 ∈ (𝐵..^𝐶) → (𝐴 + 1) ∈ (𝐵..^(𝐶 + 1))) |
10 | elfzoel2 13242 | . . . 4 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐶 ∈ ℤ) | |
11 | elfzolt3 13253 | . . . . 5 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐵 < 𝐶) | |
12 | zre 12180 | . . . . . . 7 ⊢ (𝐵 ∈ ℤ → 𝐵 ∈ ℝ) | |
13 | zre 12180 | . . . . . . 7 ⊢ (𝐶 ∈ ℤ → 𝐶 ∈ ℝ) | |
14 | ltle 10921 | . . . . . . 7 ⊢ ((𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐵 < 𝐶 → 𝐵 ≤ 𝐶)) | |
15 | 12, 13, 14 | syl2an 599 | . . . . . 6 ⊢ ((𝐵 ∈ ℤ ∧ 𝐶 ∈ ℤ) → (𝐵 < 𝐶 → 𝐵 ≤ 𝐶)) |
16 | 1, 10, 15 | syl2anc 587 | . . . . 5 ⊢ (𝐴 ∈ (𝐵..^𝐶) → (𝐵 < 𝐶 → 𝐵 ≤ 𝐶)) |
17 | 11, 16 | mpd 15 | . . . 4 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐵 ≤ 𝐶) |
18 | eluz2 12444 | . . . 4 ⊢ (𝐶 ∈ (ℤ≥‘𝐵) ↔ (𝐵 ∈ ℤ ∧ 𝐶 ∈ ℤ ∧ 𝐵 ≤ 𝐶)) | |
19 | 1, 10, 17, 18 | syl3anbrc 1345 | . . 3 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐶 ∈ (ℤ≥‘𝐵)) |
20 | fzosplitsni 13353 | . . 3 ⊢ (𝐶 ∈ (ℤ≥‘𝐵) → ((𝐴 + 1) ∈ (𝐵..^(𝐶 + 1)) ↔ ((𝐴 + 1) ∈ (𝐵..^𝐶) ∨ (𝐴 + 1) = 𝐶))) | |
21 | 19, 20 | syl 17 | . 2 ⊢ (𝐴 ∈ (𝐵..^𝐶) → ((𝐴 + 1) ∈ (𝐵..^(𝐶 + 1)) ↔ ((𝐴 + 1) ∈ (𝐵..^𝐶) ∨ (𝐴 + 1) = 𝐶))) |
22 | 9, 21 | mpbid 235 | 1 ⊢ (𝐴 ∈ (𝐵..^𝐶) → ((𝐴 + 1) ∈ (𝐵..^𝐶) ∨ (𝐴 + 1) = 𝐶)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∨ wo 847 = wceq 1543 ∈ wcel 2110 ⊆ wss 3866 class class class wbr 5053 ‘cfv 6380 (class class class)co 7213 ℝcr 10728 1c1 10730 + caddc 10732 < clt 10867 ≤ cle 10868 ℤcz 12176 ℤ≥cuz 12438 ..^cfzo 13238 |
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 2708 ax-sep 5192 ax-nul 5199 ax-pow 5258 ax-pr 5322 ax-un 7523 ax-cnex 10785 ax-resscn 10786 ax-1cn 10787 ax-icn 10788 ax-addcl 10789 ax-addrcl 10790 ax-mulcl 10791 ax-mulrcl 10792 ax-mulcom 10793 ax-addass 10794 ax-mulass 10795 ax-distr 10796 ax-i2m1 10797 ax-1ne0 10798 ax-1rid 10799 ax-rnegex 10800 ax-rrecex 10801 ax-cnre 10802 ax-pre-lttri 10803 ax-pre-lttrn 10804 ax-pre-ltadd 10805 ax-pre-mulgt0 10806 |
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 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3066 df-rex 3067 df-reu 3068 df-rab 3070 df-v 3410 df-sbc 3695 df-csb 3812 df-dif 3869 df-un 3871 df-in 3873 df-ss 3883 df-pss 3885 df-nul 4238 df-if 4440 df-pw 4515 df-sn 4542 df-pr 4544 df-tp 4546 df-op 4548 df-uni 4820 df-iun 4906 df-br 5054 df-opab 5116 df-mpt 5136 df-tr 5162 df-id 5455 df-eprel 5460 df-po 5468 df-so 5469 df-fr 5509 df-we 5511 df-xp 5557 df-rel 5558 df-cnv 5559 df-co 5560 df-dm 5561 df-rn 5562 df-res 5563 df-ima 5564 df-pred 6160 df-ord 6216 df-on 6217 df-lim 6218 df-suc 6219 df-iota 6338 df-fun 6382 df-fn 6383 df-f 6384 df-f1 6385 df-fo 6386 df-f1o 6387 df-fv 6388 df-riota 7170 df-ov 7216 df-oprab 7217 df-mpo 7218 df-om 7645 df-1st 7761 df-2nd 7762 df-wrecs 8047 df-recs 8108 df-rdg 8146 df-er 8391 df-en 8627 df-dom 8628 df-sdom 8629 df-pnf 10869 df-mnf 10870 df-xr 10871 df-ltxr 10872 df-le 10873 df-sub 11064 df-neg 11065 df-nn 11831 df-n0 12091 df-z 12177 df-uz 12439 df-fz 13096 df-fzo 13239 |
This theorem is referenced by: psgnunilem5 18886 |
Copyright terms: Public domain | W3C validator |