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Related theorems GIF version |
| Description: Reverse closure law for addition of integers. |
| Ref | Expression |
|---|---|
| zrevaddclt | ⊢ (N ∈ ℤ → ((M ∈ ℂ ⋀ (M + N) ∈ ℤ) ↔ M ∈ ℤ)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pncant 5410 | . . . . . . . . 9 ⊢ ((M ∈ ℂ ⋀ N ∈ ℂ) → ((M + N) − N) = M) | |
| 2 | zcnt 6146 | . . . . . . . . 9 ⊢ (N ∈ ℤ → N ∈ ℂ) | |
| 3 | 1, 2 | sylan2 454 | . . . . . . . 8 ⊢ ((M ∈ ℂ ⋀ N ∈ ℤ) → ((M + N) − N) = M) |
| 4 | 3 | ancoms 439 | . . . . . . 7 ⊢ ((N ∈ ℤ ⋀ M ∈ ℂ) → ((M + N) − N) = M) |
| 5 | 4 | adantr 391 | . . . . . 6 ⊢ (((N ∈ ℤ ⋀ M ∈ ℂ) ⋀ (M + N) ∈ ℤ) → ((M + N) − N) = M) |
| 6 | zsubclt 6174 | . . . . . . . 8 ⊢ (((M + N) ∈ ℤ ⋀ N ∈ ℤ) → ((M + N) − N) ∈ ℤ) | |
| 7 | 6 | ancoms 439 | . . . . . . 7 ⊢ ((N ∈ ℤ ⋀ (M + N) ∈ ℤ) → ((M + N) − N) ∈ ℤ) |
| 8 | 7 | adantlr 395 | . . . . . 6 ⊢ (((N ∈ ℤ ⋀ M ∈ ℂ) ⋀ (M + N) ∈ ℤ) → ((M + N) − N) ∈ ℤ) |
| 9 | 5, 8 | eqeltrrd 1556 | . . . . 5 ⊢ (((N ∈ ℤ ⋀ M ∈ ℂ) ⋀ (M + N) ∈ ℤ) → M ∈ ℤ) |
| 10 | 9 | ex 373 | . . . 4 ⊢ ((N ∈ ℤ ⋀ M ∈ ℂ) → ((M + N) ∈ ℤ → M ∈ ℤ)) |
| 11 | zaddclt 6171 | . . . . . 6 ⊢ ((M ∈ ℤ ⋀ N ∈ ℤ) → (M + N) ∈ ℤ) | |
| 12 | 11 | expcom 374 | . . . . 5 ⊢ (N ∈ ℤ → (M ∈ ℤ → (M + N) ∈ ℤ)) |
| 13 | 12 | adantr 391 | . . . 4 ⊢ ((N ∈ ℤ ⋀ M ∈ ℂ) → (M ∈ ℤ → (M + N) ∈ ℤ)) |
| 14 | 10, 13 | impbid 519 | . . 3 ⊢ ((N ∈ ℤ ⋀ M ∈ ℂ) → ((M + N) ∈ ℤ ↔ M ∈ ℤ)) |
| 15 | 14 | pm5.32da 652 | . 2 ⊢ (N ∈ ℤ → ((M ∈ ℂ ⋀ (M + N) ∈ ℤ) ↔ (M ∈ ℂ ⋀ M ∈ ℤ))) |
| 16 | zcnt 6146 | . . 3 ⊢ (M ∈ ℤ → M ∈ ℂ) | |
| 17 | 16 | pm4.71ri 641 | . 2 ⊢ (M ∈ ℤ ↔ (M ∈ ℂ ⋀ M ∈ ℤ)) |
| 18 | 15, 17 | syl6bbr 541 | 1 ⊢ (N ∈ ℤ → ((M ∈ ℂ ⋀ (M + N) ∈ ℤ) ↔ M ∈ ℤ)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 3 ↔ wb 146 ⋀ wa 223 = wceq 960 ∈ wcel 962 (class class class)co 3977 ℂcc 5245 + caddc 5250 − cmin 5305 ℤcz 5311 |
| This theorem is referenced by: elnn0nn 6177 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 966 ax-gen 967 ax-8 968 ax-9 969 ax-10 970 ax-11 971 ax-12 972 ax-13 973 ax-14 974 ax-17 975 ax-4 977 ax-5o 979 ax-6o 982 ax-9o 1129 ax-10o 1146 ax-16 1216 ax-11o 1224 ax-ext 1466 ax-rep 2706 ax-sep 2716 ax-nul 2723 ax-pow 2756 ax-pr 2793 ax-un 2880 ax-inf2 4637 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 780 df-3an 781 df-ex 985 df-sb 1178 df-eu 1388 df-mo 1389 df-clab 1471 df-cleq 1476 df-clel 1479 df-ne 1594 df-nel 1595 df-ral 1656 df-rex 1657 df-reu 1658 df-rab 1659 df-v 1819 df-sbc 1949 df-csb 2010 df-dif 2058 df-un 2059 df-in 2060 df-ss 2062 df-pss 2064 df-nul 2290 df-if 2372 df-pw 2412 df-sn 2422 df-pr 2423 df-tp 2425 df-op 2426 df-uni 2516 df-int 2546 df-iun 2580 df-br 2633 df-opab 2680 df-tr 2694 df-eprel 2846 df-id 2849 df-po 2854 df-so 2864 df-fr 2931 df-we 2948 df-ord 2965 df-on 2966 df-lim 2967 df-suc 2968 df-om 3146 df-xp 3198 df-rel 3199 df-cnv 3200 df-co 3201 df-dm 3202 df-rn 3203 df-res 3204 df-ima 3205 df-fun 3206 df-fn 3207 df-f 3208 df-f1 3209 df-fo 3210 df-f1o 3211 df-fv 3212 df-rdg 3946 df-opr 3979 df-oprab 3980 df-1st 4093 df-2nd 4094 df-1o 4147 df-oadd 4149 df-omul 4150 df-er 4275 df-ec 4277 df-qs 4280 df-en 4382 df-dom 4383 df-sdom 4384 df-ni 5013 df-pli 5014 df-mi 5015 df-lti 5016 df-plpq 5048 df-mpq 5049 df-enq 5050 df-nq 5051 df-plq 5052 df-mq 5053 df-rq 5054 df-ltq 5055 df-1q 5056 df-np 5099 df-1p 5100 df-plp 5101 df-mp 5102 df-ltp 5103 df-plpr 5177 df-mpr 5178 df-enr 5179 df-nr 5180 df-plr 5181 df-mr 5182 df-ltr 5183 df-0r 5184 df-1r 5185 df-m1r 5186 df-c 5253 df-0 5254 df-1 5255 df-i 5256 df-r 5257 df-plus 5258 df-mul 5259 df-lt 5260 df-sub 5369 df-neg 5371 df-pnf 5500 df-mnf 5501 df-xr 5502 df-ltxr 5503 df-le 5504 df-n 5931 df-n0 6106 df-z 6142 |