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Mirrors > Home > ILE Home > Th. List > elfzmlbm | GIF version |
Description: Subtracting the lower bound of a finite set of sequential integers from an element of this set. (Contributed by Alexander van der Vekens, 29-Mar-2018.) (Proof shortened by OpenAI, 25-Mar-2020.) |
Ref | Expression |
---|---|
elfzmlbm | ⊢ (𝐾 ∈ (𝑀...𝑁) → (𝐾 − 𝑀) ∈ (0...(𝑁 − 𝑀))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elfzuz 9977 | . . 3 ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝐾 ∈ (ℤ≥‘𝑀)) | |
2 | uznn0sub 9518 | . . 3 ⊢ (𝐾 ∈ (ℤ≥‘𝑀) → (𝐾 − 𝑀) ∈ ℕ0) | |
3 | 1, 2 | syl 14 | . 2 ⊢ (𝐾 ∈ (𝑀...𝑁) → (𝐾 − 𝑀) ∈ ℕ0) |
4 | elfzuz2 9985 | . . 3 ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝑁 ∈ (ℤ≥‘𝑀)) | |
5 | uznn0sub 9518 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑁 − 𝑀) ∈ ℕ0) | |
6 | 4, 5 | syl 14 | . 2 ⊢ (𝐾 ∈ (𝑀...𝑁) → (𝑁 − 𝑀) ∈ ℕ0) |
7 | elfzelz 9981 | . . . 4 ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝐾 ∈ ℤ) | |
8 | 7 | zred 9334 | . . 3 ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝐾 ∈ ℝ) |
9 | elfzel2 9979 | . . . 4 ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝑁 ∈ ℤ) | |
10 | 9 | zred 9334 | . . 3 ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝑁 ∈ ℝ) |
11 | elfzel1 9980 | . . . 4 ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝑀 ∈ ℤ) | |
12 | 11 | zred 9334 | . . 3 ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝑀 ∈ ℝ) |
13 | elfzle2 9984 | . . 3 ⊢ (𝐾 ∈ (𝑀...𝑁) → 𝐾 ≤ 𝑁) | |
14 | 8, 10, 12, 13 | lesub1dd 8480 | . 2 ⊢ (𝐾 ∈ (𝑀...𝑁) → (𝐾 − 𝑀) ≤ (𝑁 − 𝑀)) |
15 | elfz2nn0 10068 | . 2 ⊢ ((𝐾 − 𝑀) ∈ (0...(𝑁 − 𝑀)) ↔ ((𝐾 − 𝑀) ∈ ℕ0 ∧ (𝑁 − 𝑀) ∈ ℕ0 ∧ (𝐾 − 𝑀) ≤ (𝑁 − 𝑀))) | |
16 | 3, 6, 14, 15 | syl3anbrc 1176 | 1 ⊢ (𝐾 ∈ (𝑀...𝑁) → (𝐾 − 𝑀) ∈ (0...(𝑁 − 𝑀))) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∈ wcel 2141 class class class wbr 3989 ‘cfv 5198 (class class class)co 5853 0cc0 7774 ≤ cle 7955 − cmin 8090 ℕ0cn0 9135 ℤ≥cuz 9487 ...cfz 9965 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-sep 4107 ax-pow 4160 ax-pr 4194 ax-un 4418 ax-setind 4521 ax-cnex 7865 ax-resscn 7866 ax-1cn 7867 ax-1re 7868 ax-icn 7869 ax-addcl 7870 ax-addrcl 7871 ax-mulcl 7872 ax-addcom 7874 ax-addass 7876 ax-distr 7878 ax-i2m1 7879 ax-0lt1 7880 ax-0id 7882 ax-rnegex 7883 ax-cnre 7885 ax-pre-ltirr 7886 ax-pre-ltwlin 7887 ax-pre-lttrn 7888 ax-pre-ltadd 7890 |
This theorem depends on definitions: df-bi 116 df-3or 974 df-3an 975 df-tru 1351 df-fal 1354 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ne 2341 df-nel 2436 df-ral 2453 df-rex 2454 df-reu 2455 df-rab 2457 df-v 2732 df-sbc 2956 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-int 3832 df-br 3990 df-opab 4051 df-mpt 4052 df-id 4278 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-res 4623 df-ima 4624 df-iota 5160 df-fun 5200 df-fn 5201 df-f 5202 df-fv 5206 df-riota 5809 df-ov 5856 df-oprab 5857 df-mpo 5858 df-pnf 7956 df-mnf 7957 df-xr 7958 df-ltxr 7959 df-le 7960 df-sub 8092 df-neg 8093 df-inn 8879 df-n0 9136 df-z 9213 df-uz 9488 df-fz 9966 |
This theorem is referenced by: bcm1k 10694 |
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