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Mirrors > Home > ILE Home > Th. List > dcne | Unicode version |
Description: Decidable equality
expressed in terms of ![]() |
Ref | Expression |
---|---|
dcne |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-dc 784 |
. 2
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2 | df-ne 2263 |
. . 3
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3 | 2 | orbi2i 717 |
. 2
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4 | 1, 3 | bitr4i 186 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 668 |
This theorem depends on definitions: df-bi 116 df-dc 784 df-ne 2263 |
This theorem is referenced by: updjudhf 6850 zdceq 8920 nn0lt2 8926 xlesubadd 9449 qdceq 9807 xrmaxadd 10820 nn0seqcvgd 11465 |
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