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| Mirrors > Home > MPE Home > Th. List > lt2sqd | Structured version Visualization version GIF version | ||
| Description: The square function on nonnegative reals is strictly monotonic. (Contributed by Mario Carneiro, 28-May-2016.) |
| Ref | Expression |
|---|---|
| sqgt0d.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| lt2sqd.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
| lt2sqd.3 | ⊢ (𝜑 → 0 ≤ 𝐴) |
| lt2sqd.4 | ⊢ (𝜑 → 0 ≤ 𝐵) |
| Ref | Expression |
|---|---|
| lt2sqd | ⊢ (𝜑 → (𝐴 < 𝐵 ↔ (𝐴↑2) < (𝐵↑2))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sqgt0d.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 2 | lt2sqd.3 | . 2 ⊢ (𝜑 → 0 ≤ 𝐴) | |
| 3 | lt2sqd.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
| 4 | lt2sqd.4 | . 2 ⊢ (𝜑 → 0 ≤ 𝐵) | |
| 5 | lt2sq 14189 | . 2 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ (𝐵 ∈ ℝ ∧ 0 ≤ 𝐵)) → (𝐴 < 𝐵 ↔ (𝐴↑2) < (𝐵↑2))) | |
| 6 | 1, 2, 3, 4, 5 | syl22anc 852 | 1 ⊢ (𝜑 → (𝐴 < 𝐵 ↔ (𝐴↑2) < (𝐵↑2))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∈ wcel 2146 class class class wbr 5111 (class class class)co 7419 ℝcr 11116 0cc0 11117 < clt 11260 ≤ cle 11261 2c2 12312 ↑cexp 14117 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7742 ax-cnex 11173 ax-resscn 11174 ax-1cn 11175 ax-icn 11176 ax-addcl 11177 ax-addrcl 11178 ax-mulcl 11179 ax-mulrcl 11180 ax-mulcom 11181 ax-addass 11182 ax-mulass 11183 ax-distr 11184 ax-i2m1 11185 ax-1ne0 11186 ax-1rid 11187 ax-rnegex 11188 ax-rrecex 11189 ax-cnre 11190 ax-pre-lttri 11191 ax-pre-lttrn 11192 ax-pre-ltadd 11193 ax-pre-mulgt0 11194 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7376 df-ov 7422 df-oprab 7423 df-mpo 7424 df-om 7869 df-2nd 7993 df-frecs 8284 df-wrecs 8315 df-recs 8364 df-rdg 8403 df-er 8700 df-en 8950 df-dom 8951 df-sdom 8952 df-pnf 11262 df-mnf 11263 df-xr 11264 df-ltxr 11265 df-le 11266 df-sub 11460 df-neg 11461 df-nn 12251 df-2 12320 df-n0 12522 df-z 12609 df-uz 12881 df-seq 14058 df-exp 14118 |
| This theorem is used by: nonsq 16842 pythagtriplem10 16904 pockthg 16990 minveclem3b 25640 minveclem3 25641 minveclem4 25644 tangtx 26723 tanregt0 26757 bndatandm 27147 basellem8 27305 chpub 27437 bposlem6 27506 bposlem7 27507 2sqblem 27648 minvecolem4 31305 minvecolem5 31306 sqsscirc1 34364 areacirclem1 38418 areacirclem4 38421 areacirclem5 38422 areacirc 38423 cntotbnd 38507 rrndstprj2 38542 aks6d1c7lem1 43007 pell14qrgt0 43646 pell14qrgapw 43663 rmspecnonsq 43694 rmspecfund 43696 rmspecpos 43703 |
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