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| Mirrors > Home > ILE Home > Th. List > 4z | GIF version | ||
| Description: 4 is an integer. (Contributed by BJ, 26-Mar-2020.) |
| Ref | Expression |
|---|---|
| 4z | ⊢ 4 ∈ ℤ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 4nn 9200 | . 2 ⊢ 4 ∈ ℕ | |
| 2 | 1 | nnzi 9393 | 1 ⊢ 4 ∈ ℤ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2176 4c4 9089 ℤcz 9372 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 711 ax-5 1470 ax-7 1471 ax-gen 1472 ax-ie1 1516 ax-ie2 1517 ax-8 1527 ax-10 1528 ax-11 1529 ax-i12 1530 ax-bndl 1532 ax-4 1533 ax-17 1549 ax-i9 1553 ax-ial 1557 ax-i5r 1558 ax-13 2178 ax-14 2179 ax-ext 2187 ax-sep 4162 ax-pow 4218 ax-pr 4253 ax-un 4480 ax-setind 4585 ax-cnex 8016 ax-resscn 8017 ax-1cn 8018 ax-1re 8019 ax-icn 8020 ax-addcl 8021 ax-addrcl 8022 ax-mulcl 8023 ax-addcom 8025 ax-addass 8027 ax-distr 8029 ax-i2m1 8030 ax-0lt1 8031 ax-0id 8033 ax-rnegex 8034 ax-cnre 8036 ax-pre-ltirr 8037 ax-pre-ltwlin 8038 ax-pre-lttrn 8039 ax-pre-ltadd 8041 |
| This theorem depends on definitions: df-bi 117 df-3or 982 df-3an 983 df-tru 1376 df-fal 1379 df-nf 1484 df-sb 1786 df-eu 2057 df-mo 2058 df-clab 2192 df-cleq 2198 df-clel 2201 df-nfc 2337 df-ne 2377 df-nel 2472 df-ral 2489 df-rex 2490 df-reu 2491 df-rab 2493 df-v 2774 df-sbc 2999 df-dif 3168 df-un 3170 df-in 3172 df-ss 3179 df-pw 3618 df-sn 3639 df-pr 3640 df-op 3642 df-uni 3851 df-int 3886 df-br 4045 df-opab 4106 df-id 4340 df-xp 4681 df-rel 4682 df-cnv 4683 df-co 4684 df-dm 4685 df-iota 5232 df-fun 5273 df-fv 5279 df-riota 5899 df-ov 5947 df-oprab 5948 df-mpo 5949 df-pnf 8109 df-mnf 8110 df-xr 8111 df-ltxr 8112 df-le 8113 df-sub 8245 df-neg 8246 df-inn 9037 df-2 9095 df-3 9096 df-4 9097 df-z 9373 |
| This theorem is referenced by: fz0to4untppr 10246 fzo0to42pr 10349 iexpcyc 10789 sqoddm1div8 10838 4bc2eq6 10919 resqrexlemga 11334 ef01bndlem 12067 sin01bnd 12068 cos01bnd 12069 4dvdseven 12228 flodddiv4lt 12249 6gcd4e2 12316 6lcm4e12 12409 prm23lt5 12586 lgsdir2lem2 15506 m1lgs 15562 2lgsoddprmlem2 15583 |
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