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Mirrors > Home > MPE Home > Th. List > Mathboxes > infxrlbrnmpt2 | Structured version Visualization version GIF version |
Description: A member of a nonempty indexed set of reals is greater than or equal to the set's lower bound. (Contributed by Glauco Siliprandi, 23-Oct-2021.) |
Ref | Expression |
---|---|
infxrlbrnmpt2.x | ⊢ Ⅎ𝑥𝜑 |
infxrlbrnmpt2.b | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℝ*) |
infxrlbrnmpt2.c | ⊢ (𝜑 → 𝐶 ∈ 𝐴) |
infxrlbrnmpt2.d | ⊢ (𝜑 → 𝐷 ∈ ℝ*) |
infxrlbrnmpt2.e | ⊢ (𝑥 = 𝐶 → 𝐵 = 𝐷) |
Ref | Expression |
---|---|
infxrlbrnmpt2 | ⊢ (𝜑 → inf(ran (𝑥 ∈ 𝐴 ↦ 𝐵), ℝ*, < ) ≤ 𝐷) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | infxrlbrnmpt2.x | . . 3 ⊢ Ⅎ𝑥𝜑 | |
2 | eqid 2740 | . . 3 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
3 | infxrlbrnmpt2.b | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℝ*) | |
4 | 1, 2, 3 | rnmptssd 42717 | . 2 ⊢ (𝜑 → ran (𝑥 ∈ 𝐴 ↦ 𝐵) ⊆ ℝ*) |
5 | infxrlbrnmpt2.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ 𝐴) | |
6 | infxrlbrnmpt2.d | . . 3 ⊢ (𝜑 → 𝐷 ∈ ℝ*) | |
7 | infxrlbrnmpt2.e | . . . 4 ⊢ (𝑥 = 𝐶 → 𝐵 = 𝐷) | |
8 | 2, 7 | elrnmpt1s 5865 | . . 3 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ ℝ*) → 𝐷 ∈ ran (𝑥 ∈ 𝐴 ↦ 𝐵)) |
9 | 5, 6, 8 | syl2anc 584 | . 2 ⊢ (𝜑 → 𝐷 ∈ ran (𝑥 ∈ 𝐴 ↦ 𝐵)) |
10 | infxrlb 13079 | . 2 ⊢ ((ran (𝑥 ∈ 𝐴 ↦ 𝐵) ⊆ ℝ* ∧ 𝐷 ∈ ran (𝑥 ∈ 𝐴 ↦ 𝐵)) → inf(ran (𝑥 ∈ 𝐴 ↦ 𝐵), ℝ*, < ) ≤ 𝐷) | |
11 | 4, 9, 10 | syl2anc 584 | 1 ⊢ (𝜑 → inf(ran (𝑥 ∈ 𝐴 ↦ 𝐵), ℝ*, < ) ≤ 𝐷) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 = wceq 1542 Ⅎwnf 1790 ∈ wcel 2110 ⊆ wss 3892 class class class wbr 5079 ↦ cmpt 5162 ran crn 5591 infcinf 9188 ℝ*cxr 11019 < clt 11020 ≤ cle 11021 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2015 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2711 ax-sep 5227 ax-nul 5234 ax-pow 5292 ax-pr 5356 ax-un 7583 ax-cnex 10938 ax-resscn 10939 ax-1cn 10940 ax-icn 10941 ax-addcl 10942 ax-addrcl 10943 ax-mulcl 10944 ax-mulrcl 10945 ax-mulcom 10946 ax-addass 10947 ax-mulass 10948 ax-distr 10949 ax-i2m1 10950 ax-1ne0 10951 ax-1rid 10952 ax-rnegex 10953 ax-rrecex 10954 ax-cnre 10955 ax-pre-lttri 10956 ax-pre-lttrn 10957 ax-pre-ltadd 10958 ax-pre-mulgt0 10959 ax-pre-sup 10960 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2072 df-mo 2542 df-eu 2571 df-clab 2718 df-cleq 2732 df-clel 2818 df-nfc 2891 df-ne 2946 df-nel 3052 df-ral 3071 df-rex 3072 df-reu 3073 df-rmo 3074 df-rab 3075 df-v 3433 df-sbc 3721 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4846 df-br 5080 df-opab 5142 df-mpt 5163 df-id 5490 df-po 5504 df-so 5505 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-iota 6390 df-fun 6434 df-fn 6435 df-f 6436 df-f1 6437 df-fo 6438 df-f1o 6439 df-fv 6440 df-riota 7229 df-ov 7275 df-oprab 7276 df-mpo 7277 df-er 8490 df-en 8726 df-dom 8727 df-sdom 8728 df-sup 9189 df-inf 9190 df-pnf 11022 df-mnf 11023 df-xr 11024 df-ltxr 11025 df-le 11026 df-sub 11218 df-neg 11219 |
This theorem is referenced by: limsuplesup 43222 |
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