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Mirrors > Home > ILE Home > Th. List > infnninf | Unicode version |
Description: The point at infinity in ℕ∞ (the constant sequence equal to ). (Contributed by Jim Kingdon, 14-Jul-2022.) |
Ref | Expression |
---|---|
infnninf | ℕ∞ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1oex 6314 | . . . . . 6 | |
2 | 1 | sucid 4334 | . . . . 5 |
3 | df-2o 6307 | . . . . 5 | |
4 | 2, 3 | eleqtrri 2213 | . . . 4 |
5 | 4 | fconst6 5317 | . . 3 |
6 | 2onn 6410 | . . . . 5 | |
7 | 6 | elexi 2693 | . . . 4 |
8 | omex 4502 | . . . 4 | |
9 | 7, 8 | elmap 6564 | . . 3 |
10 | 5, 9 | mpbir 145 | . 2 |
11 | peano2 4504 | . . . . . 6 | |
12 | 1 | fvconst2 5629 | . . . . . 6 |
13 | 11, 12 | syl 14 | . . . . 5 |
14 | 1 | fvconst2 5629 | . . . . 5 |
15 | 13, 14 | eqtr4d 2173 | . . . 4 |
16 | eqimss 3146 | . . . 4 | |
17 | 15, 16 | syl 14 | . . 3 |
18 | 17 | rgen 2483 | . 2 |
19 | fveq1 5413 | . . . . 5 | |
20 | fveq1 5413 | . . . . 5 | |
21 | 19, 20 | sseq12d 3123 | . . . 4 |
22 | 21 | ralbidv 2435 | . . 3 |
23 | df-nninf 7000 | . . 3 ℕ∞ | |
24 | 22, 23 | elrab2 2838 | . 2 ℕ∞ |
25 | 10, 18, 24 | mpbir2an 926 | 1 ℕ∞ |
Colors of variables: wff set class |
Syntax hints: wceq 1331 wcel 1480 wral 2414 wss 3066 csn 3522 csuc 4282 com 4499 cxp 4532 wf 5114 cfv 5118 (class class class)co 5767 c1o 6299 c2o 6300 cmap 6535 ℕ∞xnninf 6998 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2119 ax-sep 4041 ax-nul 4049 ax-pow 4093 ax-pr 4126 ax-un 4350 ax-setind 4447 ax-iinf 4497 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-fal 1337 df-nf 1437 df-sb 1736 df-eu 2000 df-mo 2001 df-clab 2124 df-cleq 2130 df-clel 2133 df-nfc 2268 df-ne 2307 df-ral 2419 df-rex 2420 df-rab 2423 df-v 2683 df-sbc 2905 df-dif 3068 df-un 3070 df-in 3072 df-ss 3079 df-nul 3359 df-pw 3507 df-sn 3528 df-pr 3529 df-op 3531 df-uni 3732 df-int 3767 df-br 3925 df-opab 3985 df-mpt 3986 df-tr 4022 df-id 4210 df-iord 4283 df-on 4285 df-suc 4288 df-iom 4500 df-xp 4540 df-rel 4541 df-cnv 4542 df-co 4543 df-dm 4544 df-rn 4545 df-iota 5083 df-fun 5120 df-fn 5121 df-f 5122 df-fv 5126 df-ov 5770 df-oprab 5771 df-mpo 5772 df-1o 6306 df-2o 6307 df-map 6537 df-nninf 7000 |
This theorem is referenced by: fxnn0nninf 10204 nninffeq 13205 |
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