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Mirrors > Home > MPE Home > Th. List > xpstopn | Structured version Visualization version GIF version |
Description: The topology on a binary product of topological spaces, as we have defined it (transferring the indexed product topology on functions on {∅, 1o} to (𝑋 × 𝑌) by the canonical bijection), coincides with the usual topological product (generated by a base of rectangles). (Contributed by Mario Carneiro, 27-Aug-2015.) |
Ref | Expression |
---|---|
xpstps.t | ⊢ 𝑇 = (𝑅 ×s 𝑆) |
xpstopn.j | ⊢ 𝐽 = (TopOpen‘𝑅) |
xpstopn.k | ⊢ 𝐾 = (TopOpen‘𝑆) |
xpstopn.o | ⊢ 𝑂 = (TopOpen‘𝑇) |
Ref | Expression |
---|---|
xpstopn | ⊢ ((𝑅 ∈ TopSp ∧ 𝑆 ∈ TopSp) → 𝑂 = (𝐽 ×t 𝐾)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | xpstps.t | . 2 ⊢ 𝑇 = (𝑅 ×s 𝑆) | |
2 | xpstopn.j | . 2 ⊢ 𝐽 = (TopOpen‘𝑅) | |
3 | xpstopn.k | . 2 ⊢ 𝐾 = (TopOpen‘𝑆) | |
4 | xpstopn.o | . 2 ⊢ 𝑂 = (TopOpen‘𝑇) | |
5 | eqid 2739 | . 2 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
6 | eqid 2739 | . 2 ⊢ (Base‘𝑆) = (Base‘𝑆) | |
7 | eqid 2739 | . 2 ⊢ (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ (Base‘𝑆) ↦ {〈∅, 𝑥〉, 〈1o, 𝑦〉}) = (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ (Base‘𝑆) ↦ {〈∅, 𝑥〉, 〈1o, 𝑦〉}) | |
8 | 1, 2, 3, 4, 5, 6, 7 | xpstopnlem2 22845 | 1 ⊢ ((𝑅 ∈ TopSp ∧ 𝑆 ∈ TopSp) → 𝑂 = (𝐽 ×t 𝐾)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1543 ∈ wcel 2112 ∅c0 4254 {cpr 4560 〈cop 4564 ‘cfv 6415 (class class class)co 7252 ∈ cmpo 7254 1oc1o 8237 Basecbs 16815 TopOpenctopn 17024 ×s cxps 17109 TopSpctps 21964 ×t ctx 22594 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2160 ax-12 2177 ax-ext 2710 ax-rep 5203 ax-sep 5216 ax-nul 5223 ax-pow 5282 ax-pr 5346 ax-un 7563 ax-cnex 10833 ax-resscn 10834 ax-1cn 10835 ax-icn 10836 ax-addcl 10837 ax-addrcl 10838 ax-mulcl 10839 ax-mulrcl 10840 ax-mulcom 10841 ax-addass 10842 ax-mulass 10843 ax-distr 10844 ax-i2m1 10845 ax-1ne0 10846 ax-1rid 10847 ax-rnegex 10848 ax-rrecex 10849 ax-cnre 10850 ax-pre-lttri 10851 ax-pre-lttrn 10852 ax-pre-ltadd 10853 ax-pre-mulgt0 10854 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2073 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2818 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-reu 3071 df-rab 3073 df-v 3425 df-sbc 3713 df-csb 3830 df-dif 3887 df-un 3889 df-in 3891 df-ss 3901 df-pss 3903 df-nul 4255 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-iin 4924 df-br 5071 df-opab 5133 df-mpt 5153 df-tr 5186 df-id 5479 df-eprel 5485 df-po 5493 df-so 5494 df-fr 5534 df-we 5536 df-xp 5585 df-rel 5586 df-cnv 5587 df-co 5588 df-dm 5589 df-rn 5590 df-res 5591 df-ima 5592 df-pred 6189 df-ord 6251 df-on 6252 df-lim 6253 df-suc 6254 df-iota 6373 df-fun 6417 df-fn 6418 df-f 6419 df-f1 6420 df-fo 6421 df-f1o 6422 df-fv 6423 df-riota 7209 df-ov 7255 df-oprab 7256 df-mpo 7257 df-om 7685 df-1st 7801 df-2nd 7802 df-wrecs 8089 df-recs 8150 df-rdg 8188 df-1o 8244 df-2o 8245 df-er 8433 df-map 8552 df-ixp 8621 df-en 8669 df-dom 8670 df-sdom 8671 df-fin 8672 df-fi 9075 df-sup 9106 df-inf 9107 df-pnf 10917 df-mnf 10918 df-xr 10919 df-ltxr 10920 df-le 10921 df-sub 11112 df-neg 11113 df-nn 11879 df-2 11941 df-3 11942 df-4 11943 df-5 11944 df-6 11945 df-7 11946 df-8 11947 df-9 11948 df-n0 12139 df-z 12225 df-dec 12342 df-uz 12487 df-fz 13144 df-struct 16751 df-slot 16786 df-ndx 16798 df-base 16816 df-plusg 16876 df-mulr 16877 df-sca 16879 df-vsca 16880 df-ip 16881 df-tset 16882 df-ple 16883 df-ds 16885 df-hom 16887 df-cco 16888 df-rest 17025 df-topn 17026 df-topgen 17046 df-pt 17047 df-prds 17050 df-qtop 17110 df-imas 17111 df-xps 17113 df-top 21926 df-topon 21943 df-topsp 21965 df-bases 21979 df-cn 22261 df-cnp 22262 df-tx 22596 df-hmeo 22789 |
This theorem is referenced by: tmsxpsmopn 23574 |
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