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Related theorems GIF version |
| Description: The cross product of two sets is a set. Proposition 6.2 of [TakeutiZaring] p. 23. |
| Ref | Expression |
|---|---|
| xpex.1 | ⊢ A ∈ V |
| xpex.2 | ⊢ B ∈ V |
| Ref | Expression |
|---|---|
| xpex | ⊢ (A × B) ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xpex.1 | . 2 ⊢ A ∈ V | |
| 2 | xpex.2 | . 2 ⊢ B ∈ V | |
| 3 | xpexg 3265 | . 2 ⊢ ((A ∈ V ⋀ B ∈ V) → (A × B) ∈ V) | |
| 4 | 1, 2, 3 | mp2an 699 | 1 ⊢ (A × B) ∈ V |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 960 Vcvv 1814 × cxp 3174 |
| This theorem is referenced by: oprabex 4025 oprabex3 4028 oprvalex 4047 elpm 4342 map0 4350 map1 4436 xpsnen 4441 endisj 4443 xpcomen 4445 xpassen 4447 xpdom2 4448 xpdom3 4451 xpen 4494 mapxpen 4501 xpmapenlem5 4506 rankxpl 4720 rankxplim 4722 rankxplim2 4723 rankxplim3 4724 rankxpsuc 4725 aceq3 4743 aceq5lem2 4746 aceq5lem3 4747 weth 4797 unxpdomlem 4854 unxpdom2 4856 sucxpdom 4857 uncdadom 4933 cdaassen 4942 xpcdaen 4943 mapcdaen 4944 cdadom1 4945 enqex 5060 nqex 5061 enrex 5190 srex 5191 axcnex 5279 addex 5329 mulex 5330 exp1t 6574 expp1t 6575 serz0 7053 serzcmp0 7055 climconst2 7095 climconst3 7096 climuz0 7108 climaddc1 7118 climmulc2 7129 climsubc2 7131 climcmpc1 7139 iserzcmp0 7143 ser1const 7171 acdc3lem 7487 acdclem 7495 xpnnen 7500 xpomen 7501 qnnen 7504 ruclem9 7519 infxpidmlem1 7553 infxpidmlem9 7561 infxpidmlem10 7562 infxpidmlem12 7564 infmap1 7574 iunctb 7576 infmap2lem2 7582 infmap2 7583 ismeti 7799 metxp 7831 lmclim 7960 metelcls 7962 bcthlem12 8007 bcthlem15 8010 bcthlem30 8025 isgrpi 8039 isgrp2i 8072 vcoprne 8194 sspval 8378 0ofval 8443 ajfval 8465 hvmulex 8876 hlim0 9100 hlimcau 9102 hlimuni 9104 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 964 ax-gen 965 ax-8 966 ax-10 968 ax-11 969 ax-12 970 ax-13 971 ax-14 972 ax-17 973 ax-4 975 ax-5o 977 ax-6o 980 ax-9o 1125 ax-10o 1142 ax-16 1212 ax-11o 1220 ax-ext 1462 ax-sep 2708 ax-pow 2748 ax-pr 2785 ax-un 2872 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 983 df-sb 1174 df-eu 1384 df-mo 1385 df-clab 1467 df-cleq 1472 df-clel 1475 df-ne 1590 df-v 1815 df-dif 2052 df-un 2053 df-in 2054 df-ss 2056 df-nul 2284 df-pw 2406 df-sn 2416 df-pr 2417 df-op 2420 df-uni 2508 df-opab 2672 df-xp 3190 df-rel 3191 |