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Mirrors > Home > MPE Home > Th. List > abs1 | Structured version Visualization version GIF version |
Description: The absolute value of one is one. (Contributed by David A. Wheeler, 16-Jul-2016.) |
Ref | Expression |
---|---|
abs1 | ⊢ (abs‘1) = 1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1re 10984 | . 2 ⊢ 1 ∈ ℝ | |
2 | 0le1 11507 | . 2 ⊢ 0 ≤ 1 | |
3 | absid 15017 | . 2 ⊢ ((1 ∈ ℝ ∧ 0 ≤ 1) → (abs‘1) = 1) | |
4 | 1, 2, 3 | mp2an 689 | 1 ⊢ (abs‘1) = 1 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1539 ∈ wcel 2107 class class class wbr 5075 ‘cfv 6437 ℝcr 10879 0cc0 10880 1c1 10881 ≤ cle 11019 abscabs 14954 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2710 ax-sep 5224 ax-nul 5231 ax-pow 5289 ax-pr 5353 ax-un 7597 ax-cnex 10936 ax-resscn 10937 ax-1cn 10938 ax-icn 10939 ax-addcl 10940 ax-addrcl 10941 ax-mulcl 10942 ax-mulrcl 10943 ax-mulcom 10944 ax-addass 10945 ax-mulass 10946 ax-distr 10947 ax-i2m1 10948 ax-1ne0 10949 ax-1rid 10950 ax-rnegex 10951 ax-rrecex 10952 ax-cnre 10953 ax-pre-lttri 10954 ax-pre-lttrn 10955 ax-pre-ltadd 10956 ax-pre-mulgt0 10957 ax-pre-sup 10958 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3070 df-rex 3071 df-rmo 3072 df-reu 3073 df-rab 3074 df-v 3435 df-sbc 3718 df-csb 3834 df-dif 3891 df-un 3893 df-in 3895 df-ss 3905 df-pss 3907 df-nul 4258 df-if 4461 df-pw 4536 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4841 df-iun 4927 df-br 5076 df-opab 5138 df-mpt 5159 df-tr 5193 df-id 5490 df-eprel 5496 df-po 5504 df-so 5505 df-fr 5545 df-we 5547 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-pred 6206 df-ord 6273 df-on 6274 df-lim 6275 df-suc 6276 df-iota 6395 df-fun 6439 df-fn 6440 df-f 6441 df-f1 6442 df-fo 6443 df-f1o 6444 df-fv 6445 df-riota 7241 df-ov 7287 df-oprab 7288 df-mpo 7289 df-om 7722 df-2nd 7841 df-frecs 8106 df-wrecs 8137 df-recs 8211 df-rdg 8250 df-er 8507 df-en 8743 df-dom 8744 df-sdom 8745 df-sup 9210 df-pnf 11020 df-mnf 11021 df-xr 11022 df-ltxr 11023 df-le 11024 df-sub 11216 df-neg 11217 df-div 11642 df-nn 11983 df-2 12045 df-3 12046 df-n0 12243 df-z 12329 df-uz 12592 df-rp 12740 df-seq 13731 df-exp 13792 df-cj 14819 df-re 14820 df-im 14821 df-sqrt 14955 df-abs 14956 |
This theorem is referenced by: absexp 15025 absexpz 15026 iseraltlem3 15404 geolim 15591 geolim2 15592 georeclim 15593 geoisum1c 15601 efieq1re 15917 eirrlem 15922 3lcm2e6woprm 16329 4sqlem13 16667 4sqlem19 16673 gzrngunit 20673 ncvsm1 24327 dvlipcn 25167 dvfsumabs 25196 geolim3 25508 abelthlem1 25599 abelthlem2 25600 coskpi 25688 sineq0 25689 logtayl 25824 abscxpbnd 25915 root1cj 25918 bndatandm 26088 lgamgulmlem2 26188 lgamgulmlem5 26191 mule1 26306 logfacbnd3 26380 dchrabs 26417 zabsle1 26453 lgslem2 26455 lgsfcl2 26460 lgseisen 26536 2sqlem9 26584 2sqlem10 26585 nvm1 29036 nvmtri 29042 normlem7tALT 29490 norm-ii-i 29508 normsubi 29512 qqhval2lem 31940 qqh0 31943 subfaclim 33159 lcm1un 40028 nn0rppwr 40340 binomcxplemrat 41975 sineq0ALT 42564 fprodabs2 43143 |
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