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| Mirrors > Home > MPE Home > Th. List > 1pthdlem2 | Structured version Visualization version GIF version | ||
| Description: Lemma 2 for 1pthd 30435. (Contributed by Alexander van der Vekens, 4-Dec-2017.) (Revised by AV, 22-Jan-2021.) |
| Ref | Expression |
|---|---|
| 1wlkd.p | ⊢ 𝑃 = 〈“𝑋𝑌”〉 |
| 1wlkd.f | ⊢ 𝐹 = 〈“𝐽”〉 |
| Ref | Expression |
|---|---|
| 1pthdlem2 | ⊢ ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ (1..^(♯‘𝐹)))) = ∅ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1wlkd.f | . . . . . . . 8 ⊢ 𝐹 = 〈“𝐽”〉 | |
| 2 | 1 | fveq2i 6885 | . . . . . . 7 ⊢ (♯‘𝐹) = (♯‘〈“𝐽”〉) |
| 3 | s1len 14644 | . . . . . . 7 ⊢ (♯‘〈“𝐽”〉) = 1 | |
| 4 | 2, 3 | eqtri 2792 | . . . . . 6 ⊢ (♯‘𝐹) = 1 |
| 5 | 4 | oveq2i 7422 | . . . . 5 ⊢ (1..^(♯‘𝐹)) = (1..^1) |
| 6 | fzo0 13712 | . . . . 5 ⊢ (1..^1) = ∅ | |
| 7 | 5, 6 | eqtri 2792 | . . . 4 ⊢ (1..^(♯‘𝐹)) = ∅ |
| 8 | 7 | imaeq2i 6061 | . . 3 ⊢ (𝑃 “ (1..^(♯‘𝐹))) = (𝑃 “ ∅) |
| 9 | 8 | ineq2i 4178 | . 2 ⊢ ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ (1..^(♯‘𝐹)))) = ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ ∅)) |
| 10 | ima0 6080 | . . . 4 ⊢ (𝑃 “ ∅) = ∅ | |
| 11 | 10 | ineq2i 4178 | . . 3 ⊢ ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ ∅)) = ((𝑃 “ {0, (♯‘𝐹)}) ∩ ∅) |
| 12 | in0 4359 | . . 3 ⊢ ((𝑃 “ {0, (♯‘𝐹)}) ∩ ∅) = ∅ | |
| 13 | 11, 12 | eqtri 2792 | . 2 ⊢ ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ ∅)) = ∅ |
| 14 | 9, 13 | eqtri 2792 | 1 ⊢ ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ (1..^(♯‘𝐹)))) = ∅ |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1567 ∩ cin 3912 ∅c0 4294 {cpr 4596 “ cima 5665 ‘cfv 6537 (class class class)co 7411 0cc0 11100 1c1 11101 ..^cfzo 13682 ♯chash 14366 〈“cs1 14633 〈“cs2 14878 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-cnex 11156 ax-resscn 11157 ax-1cn 11158 ax-icn 11159 ax-addcl 11160 ax-addrcl 11161 ax-mulcl 11162 ax-mulrcl 11163 ax-mulcom 11164 ax-addass 11165 ax-mulass 11166 ax-distr 11167 ax-i2m1 11168 ax-1ne0 11169 ax-1rid 11170 ax-rnegex 11171 ax-rrecex 11172 ax-cnre 11173 ax-pre-lttri 11174 ax-pre-lttrn 11175 ax-pre-ltadd 11176 ax-pre-mulgt0 11177 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-int 4917 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-tr 5223 df-id 5557 df-eprel 5562 df-po 5570 df-so 5571 df-fr 5615 df-we 5617 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7863 df-1st 7986 df-2nd 7987 df-frecs 8278 df-wrecs 8309 df-recs 8358 df-rdg 8397 df-1o 8453 df-er 8694 df-en 8944 df-dom 8945 df-sdom 8946 df-fin 8947 df-card 9925 df-pnf 11245 df-mnf 11246 df-xr 11247 df-ltxr 11248 df-le 11249 df-sub 11443 df-neg 11444 df-nn 12234 df-n0 12505 df-z 12592 df-uz 12863 df-fz 13536 df-fzo 13683 df-hash 14367 df-s1 14634 |
| This theorem is referenced by: 1pthd 30435 |
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