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Mirrors > Home > ILE Home > Th. List > ax-ia3 | Unicode version |
Description: 'And' introduction. One of the axioms of propositional logic. (Contributed by Mario Carneiro, 31-Jan-2015.) |
Ref | Expression |
---|---|
ax-ia3 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | wph |
. 2
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2 | wps |
. . 3
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3 | 1, 2 | wa 102 |
. . 3
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4 | 2, 3 | wi 4 |
. 2
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5 | 1, 4 | wi 4 |
1
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Colors of variables: wff set class |
This axiom is referenced by: ex 113 pm3.2 137 pm5.54dc 861 pclem6 1306 xoranor 1309 ax10oe 1720 2pwuninelg 5952 dmaddpq 6683 dmmulpq 6684 ltsopr 6900 ax1hfs 11053 |
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