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Mirrors > Home > MPE Home > Th. List > abvf | Structured version Visualization version GIF version |
Description: An absolute value is a function from the ring to the real numbers. (Contributed by Mario Carneiro, 8-Sep-2014.) |
Ref | Expression |
---|---|
abvf.a | β’ π΄ = (AbsValβπ ) |
abvf.b | β’ π΅ = (Baseβπ ) |
Ref | Expression |
---|---|
abvf | β’ (πΉ β π΄ β πΉ:π΅βΆβ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | abvf.a | . . 3 β’ π΄ = (AbsValβπ ) | |
2 | abvf.b | . . 3 β’ π΅ = (Baseβπ ) | |
3 | 1, 2 | abvfge0 20429 | . 2 β’ (πΉ β π΄ β πΉ:π΅βΆ(0[,)+β)) |
4 | rge0ssre 13432 | . 2 β’ (0[,)+β) β β | |
5 | fss 6734 | . 2 β’ ((πΉ:π΅βΆ(0[,)+β) β§ (0[,)+β) β β) β πΉ:π΅βΆβ) | |
6 | 3, 4, 5 | sylancl 586 | 1 β’ (πΉ β π΄ β πΉ:π΅βΆβ) |
Colors of variables: wff setvar class |
Syntax hints: β wi 4 = wceq 1541 β wcel 2106 β wss 3948 βΆwf 6539 βcfv 6543 (class class class)co 7408 βcr 11108 0cc0 11109 +βcpnf 11244 [,)cico 13325 Basecbs 17143 AbsValcabv 20423 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7724 ax-cnex 11165 ax-resscn 11166 ax-1cn 11167 ax-addrcl 11170 ax-rnegex 11180 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rab 3433 df-v 3476 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-br 5149 df-opab 5211 df-mpt 5232 df-id 5574 df-po 5588 df-so 5589 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-ov 7411 df-oprab 7412 df-mpo 7413 df-er 8702 df-map 8821 df-en 8939 df-dom 8940 df-sdom 8941 df-pnf 11249 df-mnf 11250 df-xr 11251 df-ltxr 11252 df-le 11253 df-ico 13329 df-abv 20424 |
This theorem is referenced by: abvcl 20431 abvres 20446 abvmet 24083 tngnrg 24190 ostthlem1 27127 |
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