Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > funpr | Structured version Visualization version GIF version |
Description: A function with a domain of two elements. (Contributed by Jeff Madsen, 20-Jun-2010.) |
Ref | Expression |
---|---|
funpr.1 | ⊢ 𝐴 ∈ V |
funpr.2 | ⊢ 𝐵 ∈ V |
funpr.3 | ⊢ 𝐶 ∈ V |
funpr.4 | ⊢ 𝐷 ∈ V |
Ref | Expression |
---|---|
funpr | ⊢ (𝐴 ≠ 𝐵 → Fun {〈𝐴, 𝐶〉, 〈𝐵, 𝐷〉}) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | funpr.1 | . . 3 ⊢ 𝐴 ∈ V | |
2 | funpr.2 | . . 3 ⊢ 𝐵 ∈ V | |
3 | 1, 2 | pm3.2i 473 | . 2 ⊢ (𝐴 ∈ V ∧ 𝐵 ∈ V) |
4 | funpr.3 | . . 3 ⊢ 𝐶 ∈ V | |
5 | funpr.4 | . . 3 ⊢ 𝐷 ∈ V | |
6 | 4, 5 | pm3.2i 473 | . 2 ⊢ (𝐶 ∈ V ∧ 𝐷 ∈ V) |
7 | funprg 6402 | . 2 ⊢ (((𝐴 ∈ V ∧ 𝐵 ∈ V) ∧ (𝐶 ∈ V ∧ 𝐷 ∈ V) ∧ 𝐴 ≠ 𝐵) → Fun {〈𝐴, 𝐶〉, 〈𝐵, 𝐷〉}) | |
8 | 3, 6, 7 | mp3an12 1447 | 1 ⊢ (𝐴 ≠ 𝐵 → Fun {〈𝐴, 𝐶〉, 〈𝐵, 𝐷〉}) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 ∈ wcel 2110 ≠ wne 3016 Vcvv 3494 {cpr 4562 〈cop 4566 Fun wfun 6343 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-sep 5195 ax-nul 5202 ax-pr 5321 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-nul 4291 df-if 4467 df-sn 4561 df-pr 4563 df-op 4567 df-br 5059 df-opab 5121 df-id 5454 df-xp 5555 df-rel 5556 df-cnv 5557 df-co 5558 df-dm 5559 df-fun 6351 |
This theorem is referenced by: funtp 6405 fpr 6910 fnprb 6965 1sdom 8715 |
Copyright terms: Public domain | W3C validator |