Description: Lemma for iblabsnc ; cf. iblabslem . (Contributed by Brendan Leahy, 7-Nov-2017)
Ref | Expression | ||
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Hypotheses | iblabsnc.1 | |
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iblabsnc.2 | |
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iblabsnclem.1 | |
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iblabsnclem.2 | |
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iblabsnclem.3 | |
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Assertion | iblabsnclem | |