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Mirrors > Home > ILE Home > Th. List > df-ixp | Unicode version |
Description: Definition of infinite
Cartesian product of [Enderton] p. 54.
Enderton
uses a bold "X" with ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Ref | Expression |
---|---|
df-ixp |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | vx |
. . 3
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2 | cA |
. . 3
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3 | cB |
. . 3
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4 | 1, 2, 3 | cixp 6691 |
. 2
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5 | vf |
. . . . . 6
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6 | 5 | cv 1352 |
. . . . 5
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7 | 1 | cv 1352 |
. . . . . . 7
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8 | 7, 2 | wcel 2148 |
. . . . . 6
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9 | 8, 1 | cab 2163 |
. . . . 5
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10 | 6, 9 | wfn 5206 |
. . . 4
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11 | 7, 6 | cfv 5211 |
. . . . . 6
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12 | 11, 3 | wcel 2148 |
. . . . 5
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13 | 12, 1, 2 | wral 2455 |
. . . 4
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14 | 10, 13 | wa 104 |
. . 3
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15 | 14, 5 | cab 2163 |
. 2
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16 | 4, 15 | wceq 1353 |
1
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Colors of variables: wff set class |
This definition is referenced by: dfixp 6693 ss2ixp 6704 nfixpxy 6710 nfixp1 6711 ixpm 6723 |
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