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Mirrors > Home > ILE Home > Th. List > eluz4eluz2 | GIF version |
Description: An integer greater than or equal to 4 is an integer greater than or equal to 2. (Contributed by AV, 30-May-2023.) |
Ref | Expression |
---|---|
eluz4eluz2 | ⊢ (𝑋 ∈ (ℤ≥‘4) → 𝑋 ∈ (ℤ≥‘2)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2z 9306 | . 2 ⊢ 2 ∈ ℤ | |
2 | 2re 9014 | . . 3 ⊢ 2 ∈ ℝ | |
3 | 4re 9021 | . . 3 ⊢ 4 ∈ ℝ | |
4 | 2lt4 9117 | . . 3 ⊢ 2 < 4 | |
5 | 2, 3, 4 | ltleii 8085 | . 2 ⊢ 2 ≤ 4 |
6 | eluzuzle 9561 | . 2 ⊢ ((2 ∈ ℤ ∧ 2 ≤ 4) → (𝑋 ∈ (ℤ≥‘4) → 𝑋 ∈ (ℤ≥‘2))) | |
7 | 1, 5, 6 | mp2an 426 | 1 ⊢ (𝑋 ∈ (ℤ≥‘4) → 𝑋 ∈ (ℤ≥‘2)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∈ wcel 2160 class class class wbr 4018 ‘cfv 5232 ≤ cle 8018 2c2 8995 4c4 8997 ℤcz 9278 ℤ≥cuz 9553 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2162 ax-14 2163 ax-ext 2171 ax-sep 4136 ax-pow 4189 ax-pr 4224 ax-un 4448 ax-setind 4551 ax-cnex 7927 ax-resscn 7928 ax-1cn 7929 ax-1re 7930 ax-icn 7931 ax-addcl 7932 ax-addrcl 7933 ax-mulcl 7934 ax-addcom 7936 ax-addass 7938 ax-distr 7940 ax-i2m1 7941 ax-0lt1 7942 ax-0id 7944 ax-rnegex 7945 ax-cnre 7947 ax-pre-ltirr 7948 ax-pre-ltwlin 7949 ax-pre-lttrn 7950 ax-pre-ltadd 7952 |
This theorem depends on definitions: df-bi 117 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2041 df-mo 2042 df-clab 2176 df-cleq 2182 df-clel 2185 df-nfc 2321 df-ne 2361 df-nel 2456 df-ral 2473 df-rex 2474 df-reu 2475 df-rab 2477 df-v 2754 df-sbc 2978 df-dif 3146 df-un 3148 df-in 3150 df-ss 3157 df-pw 3592 df-sn 3613 df-pr 3614 df-op 3616 df-uni 3825 df-int 3860 df-br 4019 df-opab 4080 df-mpt 4081 df-id 4308 df-xp 4647 df-rel 4648 df-cnv 4649 df-co 4650 df-dm 4651 df-rn 4652 df-res 4653 df-ima 4654 df-iota 5193 df-fun 5234 df-fn 5235 df-f 5236 df-fv 5240 df-riota 5848 df-ov 5895 df-oprab 5896 df-mpo 5897 df-pnf 8019 df-mnf 8020 df-xr 8021 df-ltxr 8022 df-le 8023 df-sub 8155 df-neg 8156 df-inn 8945 df-2 9003 df-3 9004 df-4 9005 df-z 9279 df-uz 9554 |
This theorem is referenced by: eluz4nn 9593 |
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