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Mirrors > Home > ILE Home > Th. List > fvtp3g | Unicode version |
Description: The value of a function with a domain of (at most) three elements. (Contributed by Alexander van der Vekens, 4-Dec-2017.) |
Ref | Expression |
---|---|
fvtp3g |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | tprot 3711 |
. . 3
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2 | 1 | fveq1i 5555 |
. 2
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3 | necom 2448 |
. . . . 5
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4 | fvtp2g 5767 |
. . . . . 6
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5 | 4 | expcom 116 |
. . . . 5
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6 | 3, 5 | sylan2b 287 |
. . . 4
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7 | 6 | ancoms 268 |
. . 3
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8 | 7 | impcom 125 |
. 2
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9 | 2, 8 | eqtrid 2238 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-14 2167 ax-ext 2175 ax-sep 4147 ax-pow 4203 ax-pr 4238 |
This theorem depends on definitions: df-bi 117 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2045 df-mo 2046 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ne 2365 df-ral 2477 df-rex 2478 df-v 2762 df-sbc 2986 df-dif 3155 df-un 3157 df-in 3159 df-ss 3166 df-nul 3447 df-pw 3603 df-sn 3624 df-pr 3625 df-tp 3626 df-op 3627 df-uni 3836 df-br 4030 df-opab 4091 df-id 4324 df-xp 4665 df-rel 4666 df-cnv 4667 df-co 4668 df-dm 4669 df-res 4671 df-iota 5215 df-fun 5256 df-fv 5262 |
This theorem is referenced by: imasmulr 12892 |
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