![]() |
Mathbox for Glauco Siliprandi |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > Mathboxes > mulcncff | Structured version Visualization version GIF version |
Description: The multiplication of two continuous complex functions is continuous. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
Ref | Expression |
---|---|
mulcncff.f | β’ (π β πΉ β (πβcnββ)) |
mulcncff.g | β’ (π β πΊ β (πβcnββ)) |
Ref | Expression |
---|---|
mulcncff | β’ (π β (πΉ βf Β· πΊ) β (πβcnββ)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mulcncff.f | . . . 4 β’ (π β πΉ β (πβcnββ)) | |
2 | cncfrss 24831 | . . . 4 β’ (πΉ β (πβcnββ) β π β β) | |
3 | cnex 11227 | . . . . 5 β’ β β V | |
4 | 3 | ssex 5325 | . . . 4 β’ (π β β β π β V) |
5 | 1, 2, 4 | 3syl 18 | . . 3 β’ (π β π β V) |
6 | cncff 24833 | . . . . 5 β’ (πΉ β (πβcnββ) β πΉ:πβΆβ) | |
7 | 1, 6 | syl 17 | . . . 4 β’ (π β πΉ:πβΆβ) |
8 | 7 | ffvelcdmda 7099 | . . 3 β’ ((π β§ π₯ β π) β (πΉβπ₯) β β) |
9 | mulcncff.g | . . . . 5 β’ (π β πΊ β (πβcnββ)) | |
10 | cncff 24833 | . . . . 5 β’ (πΊ β (πβcnββ) β πΊ:πβΆβ) | |
11 | 9, 10 | syl 17 | . . . 4 β’ (π β πΊ:πβΆβ) |
12 | 11 | ffvelcdmda 7099 | . . 3 β’ ((π β§ π₯ β π) β (πΊβπ₯) β β) |
13 | 7 | feqmptd 6972 | . . 3 β’ (π β πΉ = (π₯ β π β¦ (πΉβπ₯))) |
14 | 11 | feqmptd 6972 | . . 3 β’ (π β πΊ = (π₯ β π β¦ (πΊβπ₯))) |
15 | 5, 8, 12, 13, 14 | offval2 7711 | . 2 β’ (π β (πΉ βf Β· πΊ) = (π₯ β π β¦ ((πΉβπ₯) Β· (πΊβπ₯)))) |
16 | 13, 1 | eqeltrrd 2830 | . . 3 β’ (π β (π₯ β π β¦ (πΉβπ₯)) β (πβcnββ)) |
17 | 14, 9 | eqeltrrd 2830 | . . 3 β’ (π β (π₯ β π β¦ (πΊβπ₯)) β (πβcnββ)) |
18 | 16, 17 | mulcncf 25394 | . 2 β’ (π β (π₯ β π β¦ ((πΉβπ₯) Β· (πΊβπ₯))) β (πβcnββ)) |
19 | 15, 18 | eqeltrd 2829 | 1 β’ (π β (πΉ βf Β· πΊ) β (πβcnββ)) |
Colors of variables: wff setvar class |
Syntax hints: β wi 4 β wcel 2098 Vcvv 3473 β wss 3949 β¦ cmpt 5235 βΆwf 6549 βcfv 6553 (class class class)co 7426 βf cof 7689 βcc 11144 Β· cmul 11151 βcnβccncf 24816 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2699 ax-rep 5289 ax-sep 5303 ax-nul 5310 ax-pow 5369 ax-pr 5433 ax-un 7746 ax-cnex 11202 ax-resscn 11203 ax-1cn 11204 ax-icn 11205 ax-addcl 11206 ax-addrcl 11207 ax-mulcl 11208 ax-mulrcl 11209 ax-mulcom 11210 ax-addass 11211 ax-mulass 11212 ax-distr 11213 ax-i2m1 11214 ax-1ne0 11215 ax-1rid 11216 ax-rnegex 11217 ax-rrecex 11218 ax-cnre 11219 ax-pre-lttri 11220 ax-pre-lttrn 11221 ax-pre-ltadd 11222 ax-pre-mulgt0 11223 ax-pre-sup 11224 |
This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2529 df-eu 2558 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-nel 3044 df-ral 3059 df-rex 3068 df-rmo 3374 df-reu 3375 df-rab 3431 df-v 3475 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4327 df-if 4533 df-pw 4608 df-sn 4633 df-pr 4635 df-tp 4637 df-op 4639 df-uni 4913 df-int 4954 df-iun 5002 df-iin 5003 df-br 5153 df-opab 5215 df-mpt 5236 df-tr 5270 df-id 5580 df-eprel 5586 df-po 5594 df-so 5595 df-fr 5637 df-se 5638 df-we 5639 df-xp 5688 df-rel 5689 df-cnv 5690 df-co 5691 df-dm 5692 df-rn 5693 df-res 5694 df-ima 5695 df-pred 6310 df-ord 6377 df-on 6378 df-lim 6379 df-suc 6380 df-iota 6505 df-fun 6555 df-fn 6556 df-f 6557 df-f1 6558 df-fo 6559 df-f1o 6560 df-fv 6561 df-isom 6562 df-riota 7382 df-ov 7429 df-oprab 7430 df-mpo 7431 df-of 7691 df-om 7877 df-1st 7999 df-2nd 8000 df-supp 8172 df-frecs 8293 df-wrecs 8324 df-recs 8398 df-rdg 8437 df-1o 8493 df-2o 8494 df-er 8731 df-map 8853 df-ixp 8923 df-en 8971 df-dom 8972 df-sdom 8973 df-fin 8974 df-fsupp 9394 df-fi 9442 df-sup 9473 df-inf 9474 df-oi 9541 df-card 9970 df-pnf 11288 df-mnf 11289 df-xr 11290 df-ltxr 11291 df-le 11292 df-sub 11484 df-neg 11485 df-div 11910 df-nn 12251 df-2 12313 df-3 12314 df-4 12315 df-5 12316 df-6 12317 df-7 12318 df-8 12319 df-9 12320 df-n0 12511 df-z 12597 df-dec 12716 df-uz 12861 df-q 12971 df-rp 13015 df-xneg 13132 df-xadd 13133 df-xmul 13134 df-icc 13371 df-fz 13525 df-fzo 13668 df-seq 14007 df-exp 14067 df-hash 14330 df-cj 15086 df-re 15087 df-im 15088 df-sqrt 15222 df-abs 15223 df-struct 17123 df-sets 17140 df-slot 17158 df-ndx 17170 df-base 17188 df-ress 17217 df-plusg 17253 df-mulr 17254 df-starv 17255 df-sca 17256 df-vsca 17257 df-ip 17258 df-tset 17259 df-ple 17260 df-ds 17262 df-unif 17263 df-hom 17264 df-cco 17265 df-rest 17411 df-topn 17412 df-0g 17430 df-gsum 17431 df-topgen 17432 df-pt 17433 df-prds 17436 df-xrs 17491 df-qtop 17496 df-imas 17497 df-xps 17499 df-mre 17573 df-mrc 17574 df-acs 17576 df-mgm 18607 df-sgrp 18686 df-mnd 18702 df-submnd 18748 df-mulg 19031 df-cntz 19275 df-cmn 19744 df-psmet 21278 df-xmet 21279 df-met 21280 df-bl 21281 df-mopn 21282 df-cnfld 21287 df-top 22816 df-topon 22833 df-topsp 22855 df-bases 22869 df-cn 23151 df-cnp 23152 df-tx 23486 df-hmeo 23679 df-xms 24246 df-ms 24247 df-tms 24248 df-cncf 24818 |
This theorem is referenced by: dvmulcncf 45342 dvdivcncf 45344 |
Copyright terms: Public domain | W3C validator |