Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > neg1z | GIF version |
Description: -1 is an integer (common case). (Contributed by David A. Wheeler, 5-Dec-2018.) |
Ref | Expression |
---|---|
neg1z | ⊢ -1 ∈ ℤ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1nn 8868 | . 2 ⊢ 1 ∈ ℕ | |
2 | nnnegz 9194 | . 2 ⊢ (1 ∈ ℕ → -1 ∈ ℤ) | |
3 | 1, 2 | ax-mp 5 | 1 ⊢ -1 ∈ ℤ |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 2136 1c1 7754 -cneg 8070 ℕcn 8857 ℤcz 9191 |
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 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-14 2139 ax-ext 2147 ax-sep 4100 ax-pow 4153 ax-pr 4187 ax-setind 4514 ax-cnex 7844 ax-resscn 7845 ax-1cn 7846 ax-1re 7847 ax-icn 7848 ax-addcl 7849 ax-addrcl 7850 ax-mulcl 7851 ax-addcom 7853 ax-addass 7855 ax-distr 7857 ax-i2m1 7858 ax-0id 7861 ax-rnegex 7862 ax-cnre 7864 |
This theorem depends on definitions: df-bi 116 df-3or 969 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ne 2337 df-ral 2449 df-rex 2450 df-reu 2451 df-rab 2453 df-v 2728 df-sbc 2952 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-int 3825 df-br 3983 df-opab 4044 df-id 4271 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-iota 5153 df-fun 5190 df-fv 5196 df-riota 5798 df-ov 5845 df-oprab 5846 df-mpo 5847 df-sub 8071 df-neg 8072 df-inn 8858 df-z 9192 |
This theorem is referenced by: modqnegd 10314 modsumfzodifsn 10331 m1expcl 10478 n2dvdsm1 11850 pythagtriplem4 12200 cosq34lt1 13411 lgslem2 13542 lgsval 13545 lgsfvalg 13546 lgsfcl2 13547 lgsval2lem 13551 lgsvalmod 13560 lgsdir2lem3 13571 lgsdir2lem4 13572 lgsdir 13576 lgsdi 13578 lgsne0 13579 apdiff 13927 |
Copyright terms: Public domain | W3C validator |