| Mathbox for Thierry Arnoux |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > tpr2tp | Structured version Visualization version GIF version | ||
| Description: The usual topology on (ℝ × ℝ) is the product topology of the usual topology on ℝ. (Contributed by Thierry Arnoux, 21-Sep-2017.) |
| Ref | Expression |
|---|---|
| tpr2tp.0 | ⊢ 𝐽 = (topGen‘ran (,)) |
| Ref | Expression |
|---|---|
| tpr2tp | ⊢ (𝐽 ×t 𝐽) ∈ (TopOn‘(ℝ × ℝ)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | tpr2tp.0 | . . 3 ⊢ 𝐽 = (topGen‘ran (,)) | |
| 2 | retopon 24811 | . . 3 ⊢ (topGen‘ran (,)) ∈ (TopOn‘ℝ) | |
| 3 | 1, 2 | eqeltri 2857 | . 2 ⊢ 𝐽 ∈ (TopOn‘ℝ) |
| 4 | txtopon 23639 | . 2 ⊢ ((𝐽 ∈ (TopOn‘ℝ) ∧ 𝐽 ∈ (TopOn‘ℝ)) → (𝐽 ×t 𝐽) ∈ (TopOn‘(ℝ × ℝ))) | |
| 5 | 3, 3, 4 | mp2an 702 | 1 ⊢ (𝐽 ×t 𝐽) ∈ (TopOn‘(ℝ × ℝ)) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1559 ∈ wcel 2141 × cxp 5641 ran crn 5644 ‘cfv 6516 (class class class)co 7391 ℝcr 11066 (,)cioo 13343 topGenctg 17457 TopOnctopon 22958 ×t ctx 23608 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5243 ax-nul 5253 ax-pow 5319 ax-pr 5387 ax-un 7713 ax-cnex 11123 ax-resscn 11124 ax-pre-lttri 11141 ax-pre-lttrn 11142 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-iun 4948 df-br 5098 df-opab 5160 df-mpt 5179 df-id 5538 df-po 5551 df-so 5552 df-xp 5649 df-rel 5650 df-cnv 5651 df-co 5652 df-dm 5653 df-rn 5654 df-res 5655 df-ima 5656 df-iota 6472 df-fun 6518 df-fn 6519 df-f 6520 df-f1 6521 df-fo 6522 df-f1o 6523 df-fv 6524 df-ov 7394 df-oprab 7395 df-mpo 7396 df-1st 7965 df-2nd 7966 df-er 8672 df-en 8922 df-dom 8923 df-sdom 8924 df-pnf 11212 df-mnf 11213 df-xr 11214 df-ltxr 11215 df-le 11216 df-ioo 13347 df-topgen 17463 df-top 22942 df-topon 22959 df-bases 22994 df-tx 23610 |
| This theorem is referenced by: tpr2uni 34163 sxbrsigalem4 34545 sxbrsiga 34548 |
| Copyright terms: Public domain | W3C validator |