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Mathbox for Rodolfo Medina |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > exan3OLD | Unicode version |
Description: Cancel a conjunct from the scope of an existential quantifier. (Contributed by Rodolfo Medina, 25-Sep-2010.) (Proof modification is discouraged.) (New usage is discouraged.) |
Ref | Expression |
---|---|
exan3OLD |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 19.40 1616 |
. 2
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2 | 1 | simprd 450 |
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-3 7 ax-mp 8 ax-gen 1552 ax-5 1563 |
This theorem depends on definitions: df-bi 178 df-an 361 df-ex 1548 |
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