Description: Lemma for lbsext . A chain in S has an upper bound in S . (Contributed by Mario Carneiro, 25-Jun-2014)
Ref | Expression | ||
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Hypotheses | lbsext.v | |
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lbsext.j | |
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lbsext.n | |
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lbsext.w | |
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lbsext.c | |
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lbsext.x | |
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lbsext.s | |
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lbsext.p | |
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lbsext.a | |
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lbsext.z | |
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lbsext.r | |
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lbsext.t | |
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Assertion | lbsextlem3 | |