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Mirrors > Home > ILE Home > Th. List > fsnunf | Unicode version |
Description: Adjoining a point to a function gives a function. (Contributed by Stefan O'Rear, 28-Feb-2015.) |
Ref | Expression |
---|---|
fsnunf |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simp1 999 |
. . 3
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2 | simp2l 1025 |
. . . . 5
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3 | simp3 1001 |
. . . . 5
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4 | f1osng 5541 |
. . . . 5
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5 | 2, 3, 4 | syl2anc 411 |
. . . 4
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6 | f1of 5500 |
. . . 4
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7 | 5, 6 | syl 14 |
. . 3
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8 | simp2r 1026 |
. . . 4
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9 | disjsn 3680 |
. . . 4
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10 | 8, 9 | sylibr 134 |
. . 3
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11 | fun 5426 |
. . 3
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12 | 1, 7, 10, 11 | syl21anc 1248 |
. 2
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13 | snssi 3762 |
. . . . 5
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14 | 13 | 3ad2ant3 1022 |
. . . 4
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15 | ssequn2 3332 |
. . . 4
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16 | 14, 15 | sylib 122 |
. . 3
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17 | feq3 5388 |
. . 3
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18 | 16, 17 | syl 14 |
. 2
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19 | 12, 18 | mpbid 147 |
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-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-ral 2477 df-rex 2478 df-v 2762 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-op 3627 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-rn 4670 df-fun 5256 df-fn 5257 df-f 5258 df-f1 5259 df-fo 5260 df-f1o 5261 |
This theorem is referenced by: tfrcllemsucfn 6406 ennnfonelemg 12560 |
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