| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > 1pthdlem2 | Structured version Visualization version GIF version | ||
| Description: Lemma 2 for 1pthd 30233. (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 6833 | . . . . . . 7 ⊢ (♯‘𝐹) = (♯‘〈“𝐽”〉) |
| 3 | s1len 14564 | . . . . . . 7 ⊢ (♯‘〈“𝐽”〉) = 1 | |
| 4 | 2, 3 | eqtri 2764 | . . . . . 6 ⊢ (♯‘𝐹) = 1 |
| 5 | 4 | oveq2i 7370 | . . . . 5 ⊢ (1..^(♯‘𝐹)) = (1..^1) |
| 6 | fzo0 13633 | . . . . 5 ⊢ (1..^1) = ∅ | |
| 7 | 5, 6 | eqtri 2764 | . . . 4 ⊢ (1..^(♯‘𝐹)) = ∅ |
| 8 | 7 | imaeq2i 6016 | . . 3 ⊢ (𝑃 “ (1..^(♯‘𝐹))) = (𝑃 “ ∅) |
| 9 | 8 | ineq2i 4148 | . 2 ⊢ ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ (1..^(♯‘𝐹)))) = ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ ∅)) |
| 10 | ima0 6035 | . . . 4 ⊢ (𝑃 “ ∅) = ∅ | |
| 11 | 10 | ineq2i 4148 | . . 3 ⊢ ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ ∅)) = ((𝑃 “ {0, (♯‘𝐹)}) ∩ ∅) |
| 12 | in0 4325 | . . 3 ⊢ ((𝑃 “ {0, (♯‘𝐹)}) ∩ ∅) = ∅ | |
| 13 | 11, 12 | eqtri 2764 | . 2 ⊢ ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ ∅)) = ∅ |
| 14 | 9, 13 | eqtri 2764 | 1 ⊢ ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ (1..^(♯‘𝐹)))) = ∅ |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1548 ∩ cin 3883 ∅c0 4263 {cpr 4559 “ cima 5623 ‘cfv 6488 (class class class)co 7359 0cc0 11034 1c1 11035 ..^cfzo 13603 ♯chash 14287 〈“cs1 14553 〈“cs2 14798 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-sep 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7681 ax-cnex 11090 ax-resscn 11091 ax-1cn 11092 ax-icn 11093 ax-addcl 11094 ax-addrcl 11095 ax-mulcl 11096 ax-mulrcl 11097 ax-mulcom 11098 ax-addass 11099 ax-mulass 11100 ax-distr 11101 ax-i2m1 11102 ax-1ne0 11103 ax-1rid 11104 ax-rnegex 11105 ax-rrecex 11106 ax-cnre 11107 ax-pre-lttri 11108 ax-pre-lttrn 11109 ax-pre-ltadd 11110 ax-pre-mulgt0 11111 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3725 df-csb 3833 df-dif 3887 df-un 3889 df-in 3891 df-ss 3901 df-pss 3904 df-nul 4264 df-if 4457 df-pw 4533 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-int 4880 df-iun 4925 df-br 5075 df-opab 5137 df-mpt 5156 df-tr 5182 df-id 5515 df-eprel 5520 df-po 5528 df-so 5529 df-fr 5573 df-we 5575 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-pred 6255 df-ord 6316 df-on 6317 df-lim 6318 df-suc 6319 df-iota 6444 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-riota 7316 df-ov 7362 df-oprab 7363 df-mpo 7364 df-om 7810 df-1st 7933 df-2nd 7934 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-rdg 8343 df-1o 8399 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-fin 8891 df-card 9858 df-pnf 11177 df-mnf 11178 df-xr 11179 df-ltxr 11180 df-le 11181 df-sub 11375 df-neg 11376 df-nn 12170 df-n0 12433 df-z 12520 df-uz 12784 df-fz 13457 df-fzo 13604 df-hash 14288 df-s1 14554 |
| This theorem is referenced by: 1pthd 30233 |
| Copyright terms: Public domain | W3C validator |