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Theorem fzmaxdif 38050
Description: Bound on the difference between two integers constrained to two possibly overlapping finite ranges. (Contributed by Stefan O'Rear, 4-Oct-2014.)
Assertion
Ref Expression
fzmaxdif (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → (abs‘(𝐴𝐷)) ≤ (𝐹𝐵))

Proof of Theorem fzmaxdif
StepHypRef Expression
1 simp2r 1243 . . . . . 6 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐷 ∈ (𝐸...𝐹))
2 elfzelz 12535 . . . . . 6 (𝐷 ∈ (𝐸...𝐹) → 𝐷 ∈ ℤ)
31, 2syl 17 . . . . 5 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐷 ∈ ℤ)
43zred 11674 . . . 4 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐷 ∈ ℝ)
5 simp2l 1242 . . . . . 6 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐹 ∈ ℤ)
65zred 11674 . . . . 5 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐹 ∈ ℝ)
7 simp1r 1241 . . . . . . 7 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐴 ∈ (𝐵...𝐶))
8 elfzel1 12534 . . . . . . 7 (𝐴 ∈ (𝐵...𝐶) → 𝐵 ∈ ℤ)
97, 8syl 17 . . . . . 6 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐵 ∈ ℤ)
109zred 11674 . . . . 5 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐵 ∈ ℝ)
116, 10resubcld 10650 . . . 4 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → (𝐹𝐵) ∈ ℝ)
124, 11resubcld 10650 . . 3 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → (𝐷 − (𝐹𝐵)) ∈ ℝ)
13 elfzelz 12535 . . . . 5 (𝐴 ∈ (𝐵...𝐶) → 𝐴 ∈ ℤ)
147, 13syl 17 . . . 4 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐴 ∈ ℤ)
1514zred 11674 . . 3 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐴 ∈ ℝ)
16 elfzle2 12538 . . . . . 6 (𝐷 ∈ (𝐸...𝐹) → 𝐷𝐹)
171, 16syl 17 . . . . 5 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐷𝐹)
184, 6, 11, 17lesub1dd 10835 . . . 4 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → (𝐷 − (𝐹𝐵)) ≤ (𝐹 − (𝐹𝐵)))
196recnd 10260 . . . . 5 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐹 ∈ ℂ)
2010recnd 10260 . . . . 5 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐵 ∈ ℂ)
2119, 20nncand 10589 . . . 4 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → (𝐹 − (𝐹𝐵)) = 𝐵)
2218, 21breqtrd 4830 . . 3 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → (𝐷 − (𝐹𝐵)) ≤ 𝐵)
23 elfzle1 12537 . . . 4 (𝐴 ∈ (𝐵...𝐶) → 𝐵𝐴)
247, 23syl 17 . . 3 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐵𝐴)
2512, 10, 15, 22, 24letrd 10386 . 2 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → (𝐷 − (𝐹𝐵)) ≤ 𝐴)
26 simp1l 1240 . . . 4 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐶 ∈ ℤ)
2726zred 11674 . . 3 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐶 ∈ ℝ)
284, 11readdcld 10261 . . 3 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → (𝐷 + (𝐹𝐵)) ∈ ℝ)
29 elfzle2 12538 . . . 4 (𝐴 ∈ (𝐵...𝐶) → 𝐴𝐶)
307, 29syl 17 . . 3 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐴𝐶)
3127, 4resubcld 10650 . . . . . 6 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → (𝐶𝐷) ∈ ℝ)
32 elfzel1 12534 . . . . . . . . 9 (𝐷 ∈ (𝐸...𝐹) → 𝐸 ∈ ℤ)
331, 32syl 17 . . . . . . . 8 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐸 ∈ ℤ)
3433zred 11674 . . . . . . 7 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐸 ∈ ℝ)
3527, 34resubcld 10650 . . . . . 6 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → (𝐶𝐸) ∈ ℝ)
36 elfzle1 12537 . . . . . . . 8 (𝐷 ∈ (𝐸...𝐹) → 𝐸𝐷)
371, 36syl 17 . . . . . . 7 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐸𝐷)
3834, 4, 27, 37lesub2dd 10836 . . . . . 6 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → (𝐶𝐷) ≤ (𝐶𝐸))
39 simp3 1133 . . . . . 6 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → (𝐶𝐸) ≤ (𝐹𝐵))
4031, 35, 11, 38, 39letrd 10386 . . . . 5 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → (𝐶𝐷) ≤ (𝐹𝐵))
4127, 4, 11lesubaddd 10816 . . . . 5 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → ((𝐶𝐷) ≤ (𝐹𝐵) ↔ 𝐶 ≤ ((𝐹𝐵) + 𝐷)))
4240, 41mpbid 222 . . . 4 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐶 ≤ ((𝐹𝐵) + 𝐷))
4311recnd 10260 . . . . 5 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → (𝐹𝐵) ∈ ℂ)
444recnd 10260 . . . . 5 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐷 ∈ ℂ)
4543, 44addcomd 10430 . . . 4 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → ((𝐹𝐵) + 𝐷) = (𝐷 + (𝐹𝐵)))
4642, 45breqtrd 4830 . . 3 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐶 ≤ (𝐷 + (𝐹𝐵)))
4715, 27, 28, 30, 46letrd 10386 . 2 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → 𝐴 ≤ (𝐷 + (𝐹𝐵)))
4815, 4, 11absdifled 14372 . 2 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → ((abs‘(𝐴𝐷)) ≤ (𝐹𝐵) ↔ ((𝐷 − (𝐹𝐵)) ≤ 𝐴𝐴 ≤ (𝐷 + (𝐹𝐵)))))
4925, 47, 48mpbir2and 995 1 (((𝐶 ∈ ℤ ∧ 𝐴 ∈ (𝐵...𝐶)) ∧ (𝐹 ∈ ℤ ∧ 𝐷 ∈ (𝐸...𝐹)) ∧ (𝐶𝐸) ≤ (𝐹𝐵)) → (abs‘(𝐴𝐷)) ≤ (𝐹𝐵))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 383  w3a 1072  wcel 2139   class class class wbr 4804  cfv 6049  (class class class)co 6813   + caddc 10131  cle 10267  cmin 10458  cz 11569  ...cfz 12519  abscabs 14173
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1871  ax-4 1886  ax-5 1988  ax-6 2054  ax-7 2090  ax-8 2141  ax-9 2148  ax-10 2168  ax-11 2183  ax-12 2196  ax-13 2391  ax-ext 2740  ax-sep 4933  ax-nul 4941  ax-pow 4992  ax-pr 5055  ax-un 7114  ax-cnex 10184  ax-resscn 10185  ax-1cn 10186  ax-icn 10187  ax-addcl 10188  ax-addrcl 10189  ax-mulcl 10190  ax-mulrcl 10191  ax-mulcom 10192  ax-addass 10193  ax-mulass 10194  ax-distr 10195  ax-i2m1 10196  ax-1ne0 10197  ax-1rid 10198  ax-rnegex 10199  ax-rrecex 10200  ax-cnre 10201  ax-pre-lttri 10202  ax-pre-lttrn 10203  ax-pre-ltadd 10204  ax-pre-mulgt0 10205  ax-pre-sup 10206
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1073  df-3an 1074  df-tru 1635  df-ex 1854  df-nf 1859  df-sb 2047  df-eu 2611  df-mo 2612  df-clab 2747  df-cleq 2753  df-clel 2756  df-nfc 2891  df-ne 2933  df-nel 3036  df-ral 3055  df-rex 3056  df-reu 3057  df-rmo 3058  df-rab 3059  df-v 3342  df-sbc 3577  df-csb 3675  df-dif 3718  df-un 3720  df-in 3722  df-ss 3729  df-pss 3731  df-nul 4059  df-if 4231  df-pw 4304  df-sn 4322  df-pr 4324  df-tp 4326  df-op 4328  df-uni 4589  df-iun 4674  df-br 4805  df-opab 4865  df-mpt 4882  df-tr 4905  df-id 5174  df-eprel 5179  df-po 5187  df-so 5188  df-fr 5225  df-we 5227  df-xp 5272  df-rel 5273  df-cnv 5274  df-co 5275  df-dm 5276  df-rn 5277  df-res 5278  df-ima 5279  df-pred 5841  df-ord 5887  df-on 5888  df-lim 5889  df-suc 5890  df-iota 6012  df-fun 6051  df-fn 6052  df-f 6053  df-f1 6054  df-fo 6055  df-f1o 6056  df-fv 6057  df-riota 6774  df-ov 6816  df-oprab 6817  df-mpt2 6818  df-om 7231  df-1st 7333  df-2nd 7334  df-wrecs 7576  df-recs 7637  df-rdg 7675  df-er 7911  df-en 8122  df-dom 8123  df-sdom 8124  df-sup 8513  df-pnf 10268  df-mnf 10269  df-xr 10270  df-ltxr 10271  df-le 10272  df-sub 10460  df-neg 10461  df-div 10877  df-nn 11213  df-2 11271  df-3 11272  df-n0 11485  df-z 11570  df-uz 11880  df-rp 12026  df-fz 12520  df-seq 12996  df-exp 13055  df-cj 14038  df-re 14039  df-im 14040  df-sqrt 14174  df-abs 14175
This theorem is referenced by:  acongeq  38052
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