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Mirrors > Home > MPE Home > Th. List > uznn0sub | Structured version Visualization version GIF version |
Description: The nonnegative difference of integers is a nonnegative integer. (Contributed by NM, 4-Sep-2005.) |
Ref | Expression |
---|---|
uznn0sub | ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑁 − 𝑀) ∈ ℕ0) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eluz2 11899 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) ↔ (𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑀 ≤ 𝑁)) | |
2 | znn0sub 11631 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 ≤ 𝑁 ↔ (𝑁 − 𝑀) ∈ ℕ0)) | |
3 | 2 | biimp3a 1580 | . 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑀 ≤ 𝑁) → (𝑁 − 𝑀) ∈ ℕ0) |
4 | 1, 3 | sylbi 207 | 1 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑁 − 𝑀) ∈ ℕ0) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1071 ∈ wcel 2145 class class class wbr 4787 ‘cfv 6030 (class class class)co 6796 ≤ cle 10281 − cmin 10472 ℕ0cn0 11499 ℤcz 11584 ℤ≥cuz 11893 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1870 ax-4 1885 ax-5 1991 ax-6 2057 ax-7 2093 ax-8 2147 ax-9 2154 ax-10 2174 ax-11 2190 ax-12 2203 ax-13 2408 ax-ext 2751 ax-sep 4916 ax-nul 4924 ax-pow 4975 ax-pr 5035 ax-un 7100 ax-cnex 10198 ax-resscn 10199 ax-1cn 10200 ax-icn 10201 ax-addcl 10202 ax-addrcl 10203 ax-mulcl 10204 ax-mulrcl 10205 ax-mulcom 10206 ax-addass 10207 ax-mulass 10208 ax-distr 10209 ax-i2m1 10210 ax-1ne0 10211 ax-1rid 10212 ax-rnegex 10213 ax-rrecex 10214 ax-cnre 10215 ax-pre-lttri 10216 ax-pre-lttrn 10217 ax-pre-ltadd 10218 ax-pre-mulgt0 10219 |
This theorem depends on definitions: df-bi 197 df-an 383 df-or 837 df-3or 1072 df-3an 1073 df-tru 1634 df-ex 1853 df-nf 1858 df-sb 2050 df-eu 2622 df-mo 2623 df-clab 2758 df-cleq 2764 df-clel 2767 df-nfc 2902 df-ne 2944 df-nel 3047 df-ral 3066 df-rex 3067 df-reu 3068 df-rab 3070 df-v 3353 df-sbc 3588 df-csb 3683 df-dif 3726 df-un 3728 df-in 3730 df-ss 3737 df-pss 3739 df-nul 4064 df-if 4227 df-pw 4300 df-sn 4318 df-pr 4320 df-tp 4322 df-op 4324 df-uni 4576 df-iun 4657 df-br 4788 df-opab 4848 df-mpt 4865 df-tr 4888 df-id 5158 df-eprel 5163 df-po 5171 df-so 5172 df-fr 5209 df-we 5211 df-xp 5256 df-rel 5257 df-cnv 5258 df-co 5259 df-dm 5260 df-rn 5261 df-res 5262 df-ima 5263 df-pred 5822 df-ord 5868 df-on 5869 df-lim 5870 df-suc 5871 df-iota 5993 df-fun 6032 df-fn 6033 df-f 6034 df-f1 6035 df-fo 6036 df-f1o 6037 df-fv 6038 df-riota 6757 df-ov 6799 df-oprab 6800 df-mpt2 6801 df-om 7217 df-wrecs 7563 df-recs 7625 df-rdg 7663 df-er 7900 df-en 8114 df-dom 8115 df-sdom 8116 df-pnf 10282 df-mnf 10283 df-xr 10284 df-ltxr 10285 df-le 10286 df-sub 10474 df-neg 10475 df-nn 11227 df-n0 11500 df-z 11585 df-uz 11894 |
This theorem is referenced by: fznn0sub 12580 elfzmlbm 12657 fzen2 12976 fzfi 12979 leexp2a 13123 hashfz 13416 ccatrn 13571 swrds2m 13895 isercoll2 14607 iseralt 14623 cvgrat 14822 fprodser 14886 dvdsexp 15258 bitsshft 15405 prmm2nn0 15617 hashdvds 15687 prmdiv 15697 prmdiveq 15698 pcaddlem 15799 vdwlem5 15896 vdwlem8 15899 dvn2bss 23913 aaliou3lem2 24318 lgsquadlem1 25326 crctcshwlkn0lem5 26942 clwwlknonex2lem1 27283 clwwlknonex2lem2 27284 numclwlk1lem2 27561 numclwwlk3lem1 27581 fiblem 30800 signstfveq0 30994 irrapxlem3 37912 itgsinexp 40683 wallispilem3 40796 fmtnorec3 41983 fmtnorec4 41984 |
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