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| Mirrors > Home > MPE Home > Th. List > 3halfnz | Structured version Visualization version GIF version | ||
| Description: Three halves is not an integer. (Contributed by AV, 2-Jun-2020.) |
| Ref | Expression |
|---|---|
| 3halfnz | ⊢ ¬ (3 / 2) ∈ ℤ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1z 12598 | . 2 ⊢ 1 ∈ ℤ | |
| 2 | 2cn 12290 | . . . . 5 ⊢ 2 ∈ ℂ | |
| 3 | 2 | mullidi 11184 | . . . 4 ⊢ (1 · 2) = 2 |
| 4 | 2lt3 12388 | . . . 4 ⊢ 2 < 3 | |
| 5 | 3, 4 | eqbrtri 5120 | . . 3 ⊢ (1 · 2) < 3 |
| 6 | 1re 11178 | . . . 4 ⊢ 1 ∈ ℝ | |
| 7 | 3re 12295 | . . . 4 ⊢ 3 ∈ ℝ | |
| 8 | 2re 12289 | . . . . 5 ⊢ 2 ∈ ℝ | |
| 9 | 2pos 12319 | . . . . 5 ⊢ 0 < 2 | |
| 10 | 8, 9 | pm3.2i 474 | . . . 4 ⊢ (2 ∈ ℝ ∧ 0 < 2) |
| 11 | ltmuldiv 12062 | . . . 4 ⊢ ((1 ∈ ℝ ∧ 3 ∈ ℝ ∧ (2 ∈ ℝ ∧ 0 < 2)) → ((1 · 2) < 3 ↔ 1 < (3 / 2))) | |
| 12 | 6, 7, 10, 11 | mp3an 1481 | . . 3 ⊢ ((1 · 2) < 3 ↔ 1 < (3 / 2)) |
| 13 | 5, 12 | mpbi 232 | . 2 ⊢ 1 < (3 / 2) |
| 14 | 3lt4 12391 | . . . 4 ⊢ 3 < 4 | |
| 15 | 2t2e4 12378 | . . . . 5 ⊢ (2 · 2) = 4 | |
| 16 | 15 | breq2i 5107 | . . . 4 ⊢ (3 < (2 · 2) ↔ 3 < 4) |
| 17 | 14, 16 | mpbir 233 | . . 3 ⊢ 3 < (2 · 2) |
| 18 | 1p1e2 12338 | . . . . 5 ⊢ (1 + 1) = 2 | |
| 19 | 18 | breq2i 5107 | . . . 4 ⊢ ((3 / 2) < (1 + 1) ↔ (3 / 2) < 2) |
| 20 | ltdivmul 12064 | . . . . 5 ⊢ ((3 ∈ ℝ ∧ 2 ∈ ℝ ∧ (2 ∈ ℝ ∧ 0 < 2)) → ((3 / 2) < 2 ↔ 3 < (2 · 2))) | |
| 21 | 7, 8, 10, 20 | mp3an 1481 | . . . 4 ⊢ ((3 / 2) < 2 ↔ 3 < (2 · 2)) |
| 22 | 19, 21 | bitri 277 | . . 3 ⊢ ((3 / 2) < (1 + 1) ↔ 3 < (2 · 2)) |
| 23 | 17, 22 | mpbir 233 | . 2 ⊢ (3 / 2) < (1 + 1) |
| 24 | btwnnz 12646 | . 2 ⊢ ((1 ∈ ℤ ∧ 1 < (3 / 2) ∧ (3 / 2) < (1 + 1)) → ¬ (3 / 2) ∈ ℤ) | |
| 25 | 1, 13, 23, 24 | mp3an 1481 | 1 ⊢ ¬ (3 / 2) ∈ ℤ |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 ↔ wb 208 ∧ wa 399 ∈ wcel 2141 class class class wbr 5099 (class class class)co 7392 ℝcr 11069 0cc0 11070 1c1 11071 + caddc 11073 · cmul 11075 < clt 11213 / cdiv 11841 2c2 12269 3c3 12270 4c4 12271 ℤcz 12565 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5245 ax-nul 5255 ax-pow 5321 ax-pr 5389 ax-un 7714 ax-resscn 11127 ax-1cn 11128 ax-icn 11129 ax-addcl 11130 ax-addrcl 11131 ax-mulcl 11132 ax-mulrcl 11133 ax-mulcom 11134 ax-addass 11135 ax-mulass 11136 ax-distr 11137 ax-i2m1 11138 ax-1ne0 11139 ax-1rid 11140 ax-rnegex 11141 ax-rrecex 11142 ax-cnre 11143 ax-pre-lttri 11144 ax-pre-lttrn 11145 ax-pre-ltadd 11146 ax-pre-mulgt0 11147 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-iun 4950 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5540 df-eprel 5545 df-po 5553 df-so 5554 df-fr 5598 df-we 5600 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-res 5657 df-ima 5658 df-pred 6284 df-ord 6345 df-on 6346 df-lim 6347 df-suc 6348 df-iota 6473 df-fun 6519 df-fn 6520 df-f 6521 df-f1 6522 df-fo 6523 df-f1o 6524 df-fv 6525 df-riota 7349 df-ov 7395 df-oprab 7396 df-mpo 7397 df-om 7843 df-2nd 7967 df-frecs 8257 df-wrecs 8288 df-recs 8337 df-rdg 8376 df-er 8673 df-en 8924 df-dom 8925 df-sdom 8926 df-pnf 11215 df-mnf 11216 df-xr 11217 df-ltxr 11218 df-le 11219 df-sub 11413 df-neg 11414 df-div 11842 df-nn 12208 df-2 12277 df-3 12278 df-4 12279 df-n0 12479 df-z 12566 |
| This theorem is referenced by: n2dvds3 16388 nn0o1gt2 16398 |
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