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 Description: If the sum of 3 states is 3, then each state is 1. (Contributed by NM, 13-Nov-1999.) (New usage is discouraged.)
Hypotheses
Ref Expression
stle.1 𝐴C
stle.2 𝐵C
Assertion
Ref Expression
stadd3i (𝑆 ∈ States → ((((𝑆𝐴) + (𝑆𝐵)) + (𝑆𝐶)) = 3 → (𝑆𝐴) = 1))

Proof of Theorem stadd3i
StepHypRef Expression
1 stle.1 . . . . . 6 𝐴C
2 stcl 28459 . . . . . 6 (𝑆 ∈ States → (𝐴C → (𝑆𝐴) ∈ ℝ))
31, 2mpi 20 . . . . 5 (𝑆 ∈ States → (𝑆𝐴) ∈ ℝ)
43recnd 9947 . . . 4 (𝑆 ∈ States → (𝑆𝐴) ∈ ℂ)
5 stle.2 . . . . . 6 𝐵C
6 stcl 28459 . . . . . 6 (𝑆 ∈ States → (𝐵C → (𝑆𝐵) ∈ ℝ))
75, 6mpi 20 . . . . 5 (𝑆 ∈ States → (𝑆𝐵) ∈ ℝ)
87recnd 9947 . . . 4 (𝑆 ∈ States → (𝑆𝐵) ∈ ℂ)
9 stm1add3.3 . . . . . 6 𝐶C
10 stcl 28459 . . . . . 6 (𝑆 ∈ States → (𝐶C → (𝑆𝐶) ∈ ℝ))
119, 10mpi 20 . . . . 5 (𝑆 ∈ States → (𝑆𝐶) ∈ ℝ)
1211recnd 9947 . . . 4 (𝑆 ∈ States → (𝑆𝐶) ∈ ℂ)
134, 8, 12addassd 9941 . . 3 (𝑆 ∈ States → (((𝑆𝐴) + (𝑆𝐵)) + (𝑆𝐶)) = ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))))
1413eqeq1d 2612 . 2 (𝑆 ∈ States → ((((𝑆𝐴) + (𝑆𝐵)) + (𝑆𝐶)) = 3 ↔ ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) = 3))
15 eqcom 2617 . . . 4 (((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) = 3 ↔ 3 = ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))))
167, 11readdcld 9948 . . . . . . 7 (𝑆 ∈ States → ((𝑆𝐵) + (𝑆𝐶)) ∈ ℝ)
173, 16readdcld 9948 . . . . . 6 (𝑆 ∈ States → ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) ∈ ℝ)
18 ltne 10013 . . . . . . 7 ((((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) ∈ ℝ ∧ ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) < 3) → 3 ≠ ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))))
1918ex 449 . . . . . 6 (((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) ∈ ℝ → (((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) < 3 → 3 ≠ ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶)))))
2017, 19syl 17 . . . . 5 (𝑆 ∈ States → (((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) < 3 → 3 ≠ ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶)))))
2120necon2bd 2798 . . . 4 (𝑆 ∈ States → (3 = ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) → ¬ ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) < 3))
2215, 21syl5bi 231 . . 3 (𝑆 ∈ States → (((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) = 3 → ¬ ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) < 3))
23 1re 9918 . . . . . . . . . . 11 1 ∈ ℝ
2423, 23readdcli 9932 . . . . . . . . . 10 (1 + 1) ∈ ℝ
2524a1i 11 . . . . . . . . 9 (𝑆 ∈ States → (1 + 1) ∈ ℝ)
26 1red 9934 . . . . . . . . . 10 (𝑆 ∈ States → 1 ∈ ℝ)
27 stle1 28468 . . . . . . . . . . 11 (𝑆 ∈ States → (𝐵C → (𝑆𝐵) ≤ 1))
285, 27mpi 20 . . . . . . . . . 10 (𝑆 ∈ States → (𝑆𝐵) ≤ 1)
29 stle1 28468 . . . . . . . . . . 11 (𝑆 ∈ States → (𝐶C → (𝑆𝐶) ≤ 1))
309, 29mpi 20 . . . . . . . . . 10 (𝑆 ∈ States → (𝑆𝐶) ≤ 1)
317, 11, 26, 26, 28, 30le2addd 10525 . . . . . . . . 9 (𝑆 ∈ States → ((𝑆𝐵) + (𝑆𝐶)) ≤ (1 + 1))
3216, 25, 3, 31leadd2dd 10521 . . . . . . . 8 (𝑆 ∈ States → ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) ≤ ((𝑆𝐴) + (1 + 1)))
3332adantr 480 . . . . . . 7 ((𝑆 ∈ States ∧ (𝑆𝐴) < 1) → ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) ≤ ((𝑆𝐴) + (1 + 1)))
34 ltadd1 10374 . . . . . . . . . 10 (((𝑆𝐴) ∈ ℝ ∧ 1 ∈ ℝ ∧ (1 + 1) ∈ ℝ) → ((𝑆𝐴) < 1 ↔ ((𝑆𝐴) + (1 + 1)) < (1 + (1 + 1))))
3534biimpd 218 . . . . . . . . 9 (((𝑆𝐴) ∈ ℝ ∧ 1 ∈ ℝ ∧ (1 + 1) ∈ ℝ) → ((𝑆𝐴) < 1 → ((𝑆𝐴) + (1 + 1)) < (1 + (1 + 1))))
363, 26, 25, 35syl3anc 1318 . . . . . . . 8 (𝑆 ∈ States → ((𝑆𝐴) < 1 → ((𝑆𝐴) + (1 + 1)) < (1 + (1 + 1))))
3736imp 444 . . . . . . 7 ((𝑆 ∈ States ∧ (𝑆𝐴) < 1) → ((𝑆𝐴) + (1 + 1)) < (1 + (1 + 1)))
38 readdcl 9898 . . . . . . . . . 10 (((𝑆𝐴) ∈ ℝ ∧ (1 + 1) ∈ ℝ) → ((𝑆𝐴) + (1 + 1)) ∈ ℝ)
393, 24, 38sylancl 693 . . . . . . . . 9 (𝑆 ∈ States → ((𝑆𝐴) + (1 + 1)) ∈ ℝ)
4023, 24readdcli 9932 . . . . . . . . . 10 (1 + (1 + 1)) ∈ ℝ
4140a1i 11 . . . . . . . . 9 (𝑆 ∈ States → (1 + (1 + 1)) ∈ ℝ)
42 lelttr 10007 . . . . . . . . 9 ((((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) ∈ ℝ ∧ ((𝑆𝐴) + (1 + 1)) ∈ ℝ ∧ (1 + (1 + 1)) ∈ ℝ) → ((((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) ≤ ((𝑆𝐴) + (1 + 1)) ∧ ((𝑆𝐴) + (1 + 1)) < (1 + (1 + 1))) → ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) < (1 + (1 + 1))))
4317, 39, 41, 42syl3anc 1318 . . . . . . . 8 (𝑆 ∈ States → ((((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) ≤ ((𝑆𝐴) + (1 + 1)) ∧ ((𝑆𝐴) + (1 + 1)) < (1 + (1 + 1))) → ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) < (1 + (1 + 1))))
4443adantr 480 . . . . . . 7 ((𝑆 ∈ States ∧ (𝑆𝐴) < 1) → ((((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) ≤ ((𝑆𝐴) + (1 + 1)) ∧ ((𝑆𝐴) + (1 + 1)) < (1 + (1 + 1))) → ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) < (1 + (1 + 1))))
4533, 37, 44mp2and 711 . . . . . 6 ((𝑆 ∈ States ∧ (𝑆𝐴) < 1) → ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) < (1 + (1 + 1)))
46 df-3 10957 . . . . . . 7 3 = (2 + 1)
47 df-2 10956 . . . . . . . 8 2 = (1 + 1)
4847oveq1i 6559 . . . . . . 7 (2 + 1) = ((1 + 1) + 1)
49 ax-1cn 9873 . . . . . . . 8 1 ∈ ℂ
5049, 49, 49addassi 9927 . . . . . . 7 ((1 + 1) + 1) = (1 + (1 + 1))
5146, 48, 503eqtrri 2637 . . . . . 6 (1 + (1 + 1)) = 3
5245, 51syl6breq 4624 . . . . 5 ((𝑆 ∈ States ∧ (𝑆𝐴) < 1) → ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) < 3)
5352ex 449 . . . 4 (𝑆 ∈ States → ((𝑆𝐴) < 1 → ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) < 3))
5453con3d 147 . . 3 (𝑆 ∈ States → (¬ ((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) < 3 → ¬ (𝑆𝐴) < 1))
55 stle1 28468 . . . . . 6 (𝑆 ∈ States → (𝐴C → (𝑆𝐴) ≤ 1))
561, 55mpi 20 . . . . 5 (𝑆 ∈ States → (𝑆𝐴) ≤ 1)
57 leloe 10003 . . . . . 6 (((𝑆𝐴) ∈ ℝ ∧ 1 ∈ ℝ) → ((𝑆𝐴) ≤ 1 ↔ ((𝑆𝐴) < 1 ∨ (𝑆𝐴) = 1)))
583, 23, 57sylancl 693 . . . . 5 (𝑆 ∈ States → ((𝑆𝐴) ≤ 1 ↔ ((𝑆𝐴) < 1 ∨ (𝑆𝐴) = 1)))
5956, 58mpbid 221 . . . 4 (𝑆 ∈ States → ((𝑆𝐴) < 1 ∨ (𝑆𝐴) = 1))
6059ord 391 . . 3 (𝑆 ∈ States → (¬ (𝑆𝐴) < 1 → (𝑆𝐴) = 1))
6122, 54, 603syld 58 . 2 (𝑆 ∈ States → (((𝑆𝐴) + ((𝑆𝐵) + (𝑆𝐶))) = 3 → (𝑆𝐴) = 1))
6214, 61sylbid 229 1 (𝑆 ∈ States → ((((𝑆𝐴) + (𝑆𝐵)) + (𝑆𝐶)) = 3 → (𝑆𝐴) = 1))
 Colors of variables: wff setvar class Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 195   ∨ wo 382   ∧ wa 383   ∧ w3a 1031   = wceq 1475   ∈ wcel 1977   ≠ wne 2780   class class class wbr 4583  ‘cfv 5804  (class class class)co 6549  ℝcr 9814  1c1 9816   + caddc 9818   < clt 9953   ≤ cle 9954  2c2 10947  3c3 10948   Cℋ cch 27170  Statescst 27203 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-hilex 27240 This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  df-po 4959  df-so 4960  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-er 7629  df-map 7746  df-en 7842  df-dom 7843  df-sdom 7844  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-2 10956  df-3 10957  df-icc 12053  df-sh 27448  df-ch 27462  df-st 28454 This theorem is referenced by:  golem2  28515
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